Rose electronic Photo Scanner CTP 8S User Guide

INSTALLATION  
AND  
OPERATIONS MANUAL  
10707 Stancliff Road  
Phone: (281) 933-7673  
Houston, Texas 77099  
Internet: WWW.ROSE.COM  
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Limited Warranty  
Rose Electronics® warrants the Caretaker Plus™ to be in good working order for one year from the date  
of purchase from Rose Electronics or an authorized dealer. Should this product fail to be in good working  
order at any time during this one-year warranty period, Rose Electronics will, at its option, repair or replace  
the Unit as set forth below. Repair parts and replacement units will be either reconditioned or new. All  
replaced parts become the property of Rose Electronics. This limited warranty does not include service to  
repair damage to the Unit resulting from accident, disaster, abuse, or unauthorized modification of the  
Unit, including static discharge and power surges.  
Limited Warranty service may be obtained by delivering this unit during the one-year warranty period to  
Rose Electronics or an authorized repair center providing a proof of purchase date. If this Unit is delivered  
by mail, you agree to insure the Unit or assume the risk of loss or damage in transit, to prepay shipping  
charges to the warranty service location, and to use the original shipping container or its equivalent. You  
must call for a return authorization number first. Under no circumstances will a unit be accepted without a  
return authorization number. Contact an authorized repair center or Rose Electronics for further  
information.  
ALL EXPRESS AND IMPLIED WARRANTIES FOR THIS PRODUCT INCLUDING THE WARRANTIES  
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION  
TO A PERIOD OF ONE YEAR FROM THE DATE OF PURCHASE, AND NO WARRANTIES, WHETHER  
EXPRESS OR IMPLIED, WILL APPLY AFTER THIS PERIOD. SOME STATES DO NOT ALLOW  
LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY  
NOT APPLY TO YOU.  
IF THIS PRODUCT IS NOT IN GOOD WORKING ORDER AS WARRANTIED ABOVE, YOUR SOLE  
REMEDY SHALL BE REPLACEMENT OR REPAIR AS PROVIDED ABOVE. IN NO EVENT WILL ROSE  
ELECTRONICS BE LIABLE TO YOU FOR ANY DAMAGES INCLUDING ANY LOST PROFITS, LOST  
SAVINGS OR OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF  
OR THE INABILITY TO USE SUCH PRODUCT, EVEN IF ROSE ELECTRONICS OR AN AUTHORIZED  
DEALER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM BY  
ANY OTHER PARTY.  
SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR  
CONSEQUENTIAL DAMAGES FOR CONSUMER PRODUCTS, SO THE ABOVE MAY NOT APPLY TO  
YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER  
RIGHTS WHICH MAY VARY FROM STATE TO STATE.  
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device,  
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against  
harmful interference when the equipment is operated in a commercial environment. This equipment  
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with  
the instruction manual, may cause harmful interference to radio communications. Operation of this  
equipment in a residential area is likely to cause harmful interference in which case the user will be  
required to correct the interference at his own expense.  
IBM, AT, and PS/2 are trademarks of International Business Machines Corp. Microsoft and Microsoft  
Windows are registered trademarks of Microsoft Corp. Any other trademarks mentioned in this manual  
are acknowledged to be the property of the trademark owner.  
Copyright Rose Electronics 1990-2002. All rights reserved.  
No part of this manual may be reproduced, stored in a retrieval system, or transcribed in any form  
or any means, electronic or mechanical, including photocopying and recording, without the prior  
written permission of Rose Electronics.  
Rose Electronics Part # MAN-CTP 1.1  
Printed In the United States of America  
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Table of Contents  
Contents  
Disclaimer.................................................................................................................... 1  
Introduction.................................................................................................................. 1  
Features ...................................................................................................................... 1  
Model Number and Options......................................................................................... 2  
First Steps ................................................................................................................ 2  
Caretaker Plus Front Panel Display............................................................................. 3  
Serial Set-Up for PCs .................................................................................................. 4  
Serial Set-up For Other Computers or Terminals ........................................................ 4  
Caretaker Plus Rear Panel – Serial Model.................................................................. 5  
Parallel Set-Up ............................................................................................................ 6  
Caretaker Plus Rear Panel – Parallel Model ............................................................... 6  
Parallel Cabling ........................................................................................................... 7  
Serial Cabling .............................................................................................................. 7  
CONFIGURATION .......................................................................................................... 7  
Initial State...............................................................................................................16  
Normal Operation....................................................................................................16  
Buffer Characteristics..............................................................................................17  
Printer Initialization Signal (Parallel Models Only) ......................................................17  
Timeout.......................................................................................................................18  
Initialization String ......................................................................................................19  
Form Feed...............................................................................................................19  
Adding More Memory..............................................................................................19  
Changing the Serial Baud Rate...............................................................................19  
Power Up Initial Display...........................................................................................20  
Program Checksum Test.........................................................................................20  
Buffer Memory Sizing and Read/Write Test ............................................................20  
Static Ram Read/Write Test....................................................................................21  
Front Panel Switches ..............................................................................................21  
Data LED, Busy LED, and Error LED......................................................................21  
Buffer Overflow Error Display (Serial Models Only).................................................21  
Flow Control Display Mode (Serial Models Only) ....................................................22  
Troubleshooting..........................................................................................................23  
Common Problems and Solutions...........................................................................23  
Maintenance and Repair .........................................................................................25  
Technical Support ...................................................................................................25  
Diagnostic Modes....................................................................................................26  
Short Test................................................................................................................26  
Restore To Factory Default .....................................................................................26  
Print Configuration/Test Pattern Function................................................................27  
Long Test Without Loopback...................................................................................28  
Long Test with Loopback.........................................................................................29  
Appendices  
Appendix A: Serial Cabling.............................................................................................30  
Appendix B: Pinout Specifications..................................................................................31  
Appendix C: MP1000 Memory Board .............................................................................32  
Appendix D: Factory Defaults.........................................................................................34  
Appendix E: General Specifications ...............................................................................34  
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Introduction  
Disclaimer  
While every precaution has been taken in the preparation of this manual, the  
manufacturer assumes no responsibility for errors or omissions. Neither does the  
manufacturer assume any liability for damages resulting from the use of the information  
contained herein. The manufacturer reserves the right to change the specifications,  
functions, or circuitry of the product without notice.  
The manufacturer cannot accept liability for damages due to misuse of the product or  
other circumstances outside the manufacturer’s control. The manufacturer will not be  
responsible for any loss, damage, or injury arising directly or indirectly from the use of  
this product.  
Introduction  
Thank you for choosing Caretaker Plus. Designed with your needs in mind, your new  
Caretaker Plus will make it possible for you to connect up to eight computers to a single  
printer, plotter, or other serial or parallel device for fast, efficient printer sharing.  
This manual contains information for the installation and operation of the Caretaker Plus  
buffered automatic switch. The unit allows several computers or terminals to have  
shared access to a common printer, plotter, or other device. Accessing the shared  
device is done simply by sending data to the unit. Since the Caretaker Plus has buffer  
memory, each computer may simultaneously send data to the unit. The data is sent to  
the shared device in the order it was received.  
All equipment is connected by cables to connectors on the Caretaker Plus rear panel.  
The unit's external power adapter connector and on-off switch are also on its rear panel.  
The Caretaker Plus front panel has 13 LEDs which display status information and 2  
switches which are used to control the Led display, run the unit's diagnostics, and  
configure the unit.  
Features  
Two to eight computers share one printer, plotter, or other device  
Serial (RS232) or parallel (Centronics), RS422 optional  
Uses commonly available cables  
Compatible with any computer – PCs, Macs, minis  
Compatible with all software and operating systems  
Compatible with all printers and plotters  
Simultaneous input from all computers  
Up to two megabyte buffer  
Serial units have programmable baud rate and flow control  
Programmable initialization strings and end-of-job form feed  
Units can be linked for more than 8 computers  
Special noise protection features  
Mode, data, busy, and error LEDs show data activity and status  
Self-test and diagnostic features  
Made in USA  
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Model Number and Options  
The Caretaker Plus consists of a switch unit and a separate wall mounted power  
adapter. It is available in several models: 2 to 8 ports, either serial or parallel, and  
Centronics tyhpe connectors or Db25 type connectors. The base model has a 16K  
buffer expandable to 2MB. The model number is described below.  
First Steps  
Contents  
You should have received the Caretaker Plus system unit, a power adapter, and this  
manual. Save the cardboard box and its polystyrene inserts. If you have ordered any  
additional cables they usually arrive in the same package.  
Connecting the Cables  
Cabling is one area to which you must pay careful attention. Consult the cabling guides  
in this manual for the correct pinouts. If you are not sure, give us a call, we will be  
happy to assist you. The shared device connects to the port labeled "0". The  
computers connect to port number 1 and higher.  
Configuring the Caretaker Plus  
The factory default settings (see Appendix D) are sufficient for most applications. To  
change the defaults, you configure the unit through port 1. To configure the unit you  
access the configuration menu or send commands as described later.  
Configuring the computers  
The final step in installation is to make sure that your computer's software is configured  
correctly, by setting the proper communication settings. If you use serial ports on PCs,  
you should have the proper DOS MODE statement in your AUTOEXEC.Bat file.  
Where to Go from Here  
Those experienced in switch installation may take advantage of the Quick Setup List on  
the next page. If you are less experienced, however, we recommend that you follow the  
step-by-step instructions, beginning with the Cabling section on page 6.  
If you Have a Problem  
Installation should go smoothly. If you have a problem, however, check first to see if the  
error light is on. If it is, refer to Table 7 on page 19 to determine which type of error  
occurred. You will find the front panel of the Caretaker Plus very useful in diagnosing  
problems. Please refer also to the appropriate installation step. Then, if you are still  
unable to resolve the problem, refer to the Troubleshooting section on page 18.  
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FRONT PANEL DISPLAY  
Caretaker Plus Front Panel Display  
POWER LED is lit whenever the unit is powered on.  
ADVANCE and SELECT switches are used to enter the configuration menu, go into  
diagnostic modes, or clear the buffer.  
MODE LED is lit to indicate the unit is in the configuration or flow control display mode.  
DATA LED lights as data is sent to the unit.  
BUSY LED is lit when the printer is on-line or busy while accepting data  
ERROR LED indicates an error has occurred, with LEDs 1-8 indicating which error.  
LEDs 1-8 indicate data activity on ports 1-8. When an Led is flashing, that port is  
sending data to the printer. If an Led is steady, that port has data waiting to be sent to  
the printer.  
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QUICK SETUP LIST – Serial Units  
Serial Set-Up for PCs  
1. Connect your PC to port 1 on the Caretaker Plus with the proper cable.  
2. Connect the power adapter to the Caretaker Plus and turn the Caretaker Plus on.  
Verify that the power LED is on. The other LEDs light in various patterns as the  
power up tests are performed and then all go off. The ERROR LED will be lit for  
any errors.  
3. Run a communication program such as Procomm with the serial protocol set to  
9600 baud, no-parity, 8 bits, and one stop bit.  
4. Momentarily press in the advance and select switches on the Caretaker Plus. The  
MODE and BUSY LEDs will light.  
5. Hit return on your keyboard. The configuration menu should appear. Select the  
desired items from the menu.  
6. Exit from the configuration menu with the X command, making sure to save any  
parameters you changed.  
7. Setup your application software to print to LPT1. Put the following DOS mode  
commands in your AUTOEXEC.BAT file. The example below uses COM1,  
Substitute with COM2 if you are using COM2 on your PC.  
MODE LPT1:+COM1  
(Redirects LPT1 port to your serial port)  
MODE COM1:9600,N,8,1,P (Sets serial port baud rate to 9600 baud)  
8. Connect the Caretaker Plus port 0 to your shared device with the correct cable.  
Connect your computers to ports 1-8.  
9. Send data from your application or print program. Data will be routed to the shared  
device automatically.  
10. Re-enter the configuration menu to change any other parameters, such as the baud  
rate, initialization string, form feed, or the timeout value. See the section on  
"CONFIGURATION" for further information.  
Serial Set-up For Other Computers or Terminals  
1. Connect your PC to port 1 on the Caretaker Plus with the proper cable.  
2. Connect the power adapter to the Caretaker Plus and turn the Caretaker Plus on.  
Verify that the power LED is on. The other LEDs light in various patterns as the  
power up tests are performed and then all go off. The ERROR LED will be lit for  
any errors.  
3. Set your computer or terminal to 9600 baud, no parity, 8 bits, and one stop bit.  
4. Momentarily press in the advance and select switches on the Caretaker Plus. The  
MODE and BUSY LEDs will light.  
5. Hit return on your keyboard. The configuration menu should appear. Select the  
desired items from the menu.  
6. Exit from the configuration menu with the X command, making sure to save any  
parameters you changed.  
7. Connect the Caretaker Plus port 0 to your shared device with the correct cable.  
Connect your computers to ports 1-8.  
8. Send data from your application or print program. Data will be routed to the shared  
device automatically  
9. Re-enter the configuration menu to change any other parameters, such as the baud  
rate, initialization string, form feed, or the timeout value.  
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Caretaker Plus Rear Panel – Serial Model  
The diagram below shows the connector arrangement for model #CTP-8S. It has nine  
serial ports. The CTP-4S is similar but it doesn't have ports 5-8. Port 0, the rightmost  
port, is where you connect the printer. The computers connect to the ports labeled 1-8.  
the serial cables shown below are the most common ones. For other cables, see  
Appendix A.  
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QUICK SETUP LIST – Parallel Units  
Parallel Set-Up  
1. Connect the Caretaker Plus port 0 to your printer with the correct cable. Connect  
your computers to ports 1-8 with the correct cables.  
2. Connect the power adapter to the Caretaker Plus and turn the Caretaker Plus on.  
Verify that the power LED is on. The other LEDs light in various patterns as the  
power up tests are performed and then all go off. The ERROR LED will be lit for  
any errors.  
3. For PCs you should install your software package(s) to use the parallel port when  
printing. Also put the following statement in your AUTOEXEC.Bat file:  
MODE LPT1:,,P  
This statement will set the parallel port for infinite retry.  
4. Send data from your application or print program. Data will be routed to the shared  
device automatically.  
5. To optimize your installation, you can later configure any of the programmable  
parameters such as initialization string, form feed, or the timeout value. See the  
section on "CONFIGURATION" for further information  
Caretaker Plus Rear Panel – Parallel Model  
The diagram below shows the connector arrangement for model #CTP-8P. It has nine  
parallel ports with Centronics connectors. The CTP-4P is similar but it doesn't have  
ports 5-8. Port 0, the rightmost port, is where you connect the printer. The computers  
connect to the ports labeled 1-8.  
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CABLING  
One of the most important steps in installing the Caretaker Plus is to connect the correct  
cables. We have tried to give as much information as possible to specify the correct  
cable. Please refer to Appendix A and B. Also refer to the previous section.  
Parallel Cabling  
Parallel units with Centronics connectors use standard IBM parallel cables to connect  
from PCs to the switch (port 1-8). A straight through cable with male Centronics  
connectors on each end is used to connect from the switch (port 0) to the printer.  
Parallel units with female DB25 connectors use a straight through cable with male DB25  
connectors on each end to connect from PCs to the switch (ports 1-8). A standard IBM  
parallel printer cable is used to connect from the switch (port 0) to the printer.  
Parallel cabling in excess of 25 feet in length should be routed with caution. The  
maximum distance that a cable may be run is dependent upon the construction of the  
cable and its routing. For extended distances, shielded cable or ribbon cable should be  
used. Routing near machines that may create electrical noise, such as elevator motors,  
fluorescent lights, or air conditioning compressors should be avoided. Typically a cable  
run for 100 feet will work reliably but is not guaranteed. Low capacitance cable should  
be specified for long lengths of cable. Rose Electronics can construct the proper cabling  
to your specified length.  
Serial Cabling  
Proper serial cabling and pinout is crucial in the installation of your serial port peripheral.  
Appendix A gives a comprehensive list of the cable pinouts required for a successful  
installation.  
Serial cabling in excess of 100 feet should be routed with caution. The maximum cable  
length depends upon the construction of the cable and its routing. For extended runs,  
shielded cable should be used. Avoid routing near fluorescent lights, air conditioning  
compressors, or machines that may create electrical noise. Cable length and baud rate  
are inversely proportional: the longer the cable, the slower the baud rate must be. The  
RS-232-C specification recommends a maximum cable length of 50 feet at 9600 baud,  
however, with low capacitance cables, runs of greater distance are often successful.  
Rose Electronics can construct the proper cabling to your specified length.  
CONFIGURATION  
Configuration is unnecessary if the factory default settings are acceptable (see  
APPENDIX D for the FACTORY DEFAULT SETTINGS. The most common items to be  
configured are the timeout, initialization string, form feed, and for serial units the  
protocol.  
There are two methods to configure the unit --by menu and by command. The  
configuration menu can only be accessed through a serial port. Parallel units are  
required to be configured by command. Serial units can be configured by command, but  
it is usually more convenient to use the configuration menu.  
To access the configuration menu, a dumb terminal or a PC emulating a dumb terminal  
must be connected to port 1. The PC or terminal must be set to 9600 baud, 8 bits, no-  
parity, 1 stop bit. After connecting your terminal or PC, power up the Caretaker Plus and  
wait for the power up tests to complete. When no LEDs on the front panel are lit, press  
both front panel switches at the same time. The MODE and BUSY LEDs will illuminate  
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to indicate entry into configuration mode. Entering configuration mode will stop data  
transfer to the shared device, and also erase all data in the buffer. No new data can be  
loaded into the unit while in configuration mode. Press carriage return on your terminal  
to call the menu. The DATA LED will light indicating entry into the menu mode. You will  
be prompted for the proper responses.  
The configuration menu displays the setup parameters for all ports and allows you to  
change them. The item to be changed is selected with a single character, followed by a  
carriage return. You are further prompted to answer questions appropriate for each  
menu item. Possible responses to each prompt are listed in parentheses. Responses  
may be entered in either upper or lower case. You may use the backspace key to  
correct your entry. A carriage return is required to enter the response Entering only a  
return to a prompt will leave that parameter unchanged except for the initialization string  
entry, which will clear the string. Replying with a return only to a Y/N (yes/no) prompt will  
be interpreted as a no. A sample configuration display is shown in TABLE 1.  
Table 1. Configuration Menu Display  
CARETAKER PLUS CONFIGURATION Rev 3.8 COPYRIGHT 1986-91 ROSE  
ELECTRONICS  
Installed memory ....... 64K Front panel switches .. ENABLED  
Timeout ................ 20 Seconds Form teed ............. DISABLED  
Initialization String.. DISABLED  
------ Current protocol -----  
------ Powerup protocol ------  
Port Baud Parity Length Stop Flow  
Baud Parity Length StopFlow  
1 9600 NONE  
2 9600 NONE  
3 9600 NONE  
4 9600 NONE  
8
8
8
8
1
1
1
1
DTR  
DTR  
DTR  
DTR  
9600 NONE  
9600 NONE  
9600 NONE  
9600 NONE  
8
8
8
8
1 DTR  
1 DTR  
1 DTR  
1 DTR  
P - Change port formal  
T - Change timeout  
D - Disable operator switches  
A - Advanced features  
F - Change form feed  
I - Change init. String  
Configuration Menu part 1  
K - Keep new configuration  
X - Exit configuration  
CARETAKER PLUS CONFIGURATION Rev 3.8 COPYRIGHT 1986-91 ROSE  
ELECTRONICS  
----- Advanced Features ------  
Unidirectional Xon/Xoff ............. ENABLED  
Reverse Channel Data Timeout ........ DISABLED  
Allow Timeout On Busy (Ports 1-8) ... Yes  
Filter size ......................... 0 Characters  
U - Change unidirectlon Xon/Xoff  
R - Change reverse channel data timeout  
A - Change allow timeout on busy  
F - Change filter size  
X - Return to previous menu  
Enter choice (U.R.A,F.X, or H for help)  
Configuration Menu part 2  
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Configuration Menu Items  
In the examples below, <ENTER> means "press the ENTER key", not "type the  
characters <ENTER>. Output from the Caretaker Plus is shown in courier type. Input  
from the user is shown in underlined courier type.  
Protocol  
The protocol consists of the baud rate, parity, word length, number of stop bits, and flow  
control. The factory default is 9600 baud, no parity, 8 bits, 1 stop, and DTR flow control.  
You may configure the protocol separately for each port. The port is changed to the new  
protocol, but the change is not saved in non-volatile memory until the Keep command is  
issued. To change the protocol enter P to the choice prompt. You will be asked which  
port you want to change. Enter the port number or R to change a range of ports. The  
range option will set any changed item(s) (i.e. baud rate, parity, etc.) to the new common  
value(s) for all the ports selected; however, any unchanged item(s) will remain at the  
previous setting(s). If you enter 'R', you will be asked for the range of ports you want to  
change. The ending port number must be greater than or equal to the starting port  
number. Note that if you hit just a return to the ending port number, that port number will  
be the same as the starting port number and only one port will be changed. After  
entering the port(s) to be changed, answer the subsequent prompts. Note that protocol  
changes are made when you exit the configuration menu.  
Single Port  
Enter choice (P.T,F,I,D,A,K.X, or H for help) <ENTER>  
Enter the port number (0-8 or R) 3<ENTER>  
Enter baud rate (19200, 9600, 7200, 4800, 3600, 2400. 1800, 1200, 600, 300, 150,  
134.5, 110, 75, 50) 1200<ENTER>  
Enter parity type (N=None, E=Even, O=Odd, M=mark, S=Space) E<ENTER>  
Enter word length (5, 6, 7, 8) 7<ENTER>  
Enter stop bits (1,2) 1<ENTER>  
Enter flow control (D=DTR X=XONIXOFF) X<ENTER>  
Range of Ports  
Enter choice (P.T,F,I.D,A.K,X, or H for help) P<ENTER>  
Enter the port number (0-8 or R) R<ENTER>  
Enter the starting port number (0-8) 3<ENTER>  
Enter the ending port number (0-8) 4<ENTER>  
Enter baud rate (19200, 9600, 7200. 4800, 3600. 2400, 1800, 1200, 600, 300, 150,  
134.5. 110, 75, 50) 2400<ENTER>  
Enter parity type (N=None, E=Even, O=Odd, M=mark. S=Space) (ENTER>  
Enter word length (5, 6, 7, 8) <ENTER>  
Enter stop bits (1, 2) <ENTER>  
Enter flow control (D=DTR X=XON/XOFF) D<ENTER>  
Timeout  
The timeout is used to automatically disconnect a port that is inactive (not sending or  
receiving data) from the shared device. The timeout specifies the length of time a port  
must remain inactive before the Caretaker Plus disconnects it from the shared device  
and connects the next port in the queue. The factory default is 20 seconds, but may be  
changed to be from 2 to 255 seconds. To change the timeout, enter T to the choice  
prompt and enter the new timeout value.  
Enter choice (P,T,F,I,D.A,K,X, or H for help) T<ENTER>  
Enter timeout (2-255) IO<ENTER>  
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Form Feed  
The form feed, when enabled, sends a form feed character to the shared device to eject  
the last page printed when a port is disconnected. The factory default is a disabled form  
feed. When enabled the last character sent to the shared device is examined. If it is a  
form feed no action is taken. If it is not a form feed, one is supplied. To change the form  
feed, enter F to the choice prompt, and answer Y or N to enable or disable the form  
feed.  
Enter choice (P,T,F,I,D.A,K,X, or H for help) F<ENTER>  
Use auto form feed between jobs (Y/N) ? Y<ENTER>  
Initialization String  
The initialization string is used to initialize the shared device to a desired state. The  
factory default is to disable sending of the string. This string is sent to the shared device,  
before buffer data, when a port is connected. The string may be up to 8 characters long.  
Entering return only to the 'Enter initialization string' prompt will disable the sending of  
the string. To change the initialization string enter I to the choice prompt and enter the  
string. Unprintable characters such as escape may be entered and will be displayed on  
the configuration menu as periods. Note that neither the ASCII NULL character (code  
00), carriage return, nor line feed characters are allowed in an initialization string.  
er choice (P,T,F,I,D.A,K,X. or H for help) <ENTER>  
er initialization string (CR only to disable) ? .E<ENTER>  
Disable Operator Switches  
This command inhibits usage of configuration mode or the clear buffer function, starting  
on the next power up. The factory default enables the operator switches. Use this  
command to prevent unauthorized change of the configuration parameters once you  
have set them properly. Once this state has been set, the only way to configure the unit  
is by resetting the unit to default settings and configuring again from those settings; see  
'RESTORE TO DEFAULT FUNCTION'. Enter D from the choice prompt, then confirm  
your selection. Also, to doubly confirm this, you must also enter the KEEP command  
afterwards.  
Enter choice (P,T.F.I.D,A,K,X. or H for help) D<ENTER>  
WARNING! This option will disable the operator command CONFIGURATION MODE.  
After this command is executed, you will not be able to return to configuration mode  
without having to restore the unit to DEFAULT CONFIGURATION, thus erasing your  
custom configuration.  
Are you sure? (Y/N) Y<ENTER>  
Keep  
The keep command is used to store your changes in non-volatile memory. subsequently  
powering up the unit will use the newly saved parameters as the power up settings. If  
you do not use this command at the conclusion of your configuration, the unit will not  
remember your changes on the next power-up. To save the parameters enter K to the  
choice prompt. A prompt to enter yes or no to prevent accidental entry has been  
included. You must answer Y to this prompt for the parameters to be saved.  
Enter choice (P,T.F.I.D,A.K.X, or H for help) K<ENTER>  
Are you sure ? (Y/N) <ENTER>  
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Exit  
This command is used to exit the configuration menu and return the unit to normal (data  
transfer) mode. Enter X to the choice prompt. A termination message will print, and the  
BUSY, DATA, and MODE LEDs will return to the state they were in before entry to  
configuration mode. The unit is then ready to accept data.  
Enter choice (P.T,F,I,D,A,K.X, or H for help) X<ENTER>  
Configuration terminated  
Help (Main Menu)  
This option gives a brief description of what each command does.  
Enter choice (P,T,F,I.D.A.K,X, or H for help) H<ENTER>  
The configuration menu shows the amount of memory installed, other various settings,  
and the current and power-on protocol settings for each port. Configure the Caretaker  
Plus by entering the letter of an item on the menu.  
P-PROTOCOL  
T-TIMEOUT  
The protocol...  
After this ...  
F-FORMFEED  
I-INIT STRING  
D-FRONT SWITCHES  
A-ADV. FEATURES  
K-SAVE CHANGES  
X-EXIT  
Sends a ...  
Sent out ...  
To disable/enable ...  
Calls up...  
Puts current ...  
Exit from ...  
H-HELP  
Displays ...  
Hit enter key to see configuration parameters or enter choice  
Advanced Features  
This command is used to call another menu with a list of 5 commands that are detailed  
below. Enter A to choice prompt. Another menu will print.  
Enter choice (P.T.F.I,D,A.K.X, or H for help) A<ENTER>  
Unidirectional X-on/X-off  
This command (on the advanced features menu) determines whether X-onlX-off are  
interpreted as data flow control characters or simply as data. This command is  
applicable only on the Caretaker Plus serial ports which are configured to use the X-  
on/X-off software handshaking protocol. When this feature is enabled, all X-on/X-off  
characters received on any port are interpreted as data flow control characters and are  
not transmitted to their destination port. When this feature is disabled, X-on/X-off  
characters received on port O will be used as data flow control characters; however, X-  
on/X-off characters received on ports 1-8 will be interpreted as data and passed through  
to port 0 for transmission. This is useful when plotting or printing graphics that contain X-  
on/X-off characters as part of the graphics data. The factory default is enabled. To  
change this feature, enter U to the choice prompt and answer Y or N to enable or  
disable the  
unidirectional X-on/X-off.  
Enter choice (U.R.A.F,X. or H for help) U<ENTER>  
Use unidirectional X-on/X-off (Y/N)? Y<ENTER>  
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Reverse Channel Data Timeout  
This command (on the advanced features menu) determines whether or not to reset the  
timeout clock when data is received on port O "reverse channel data". When this feature  
is enabled, reverse channel data resets the timeout clock. When this feature is disabled,  
reverse channel data does not reset the timeout clock. Because some printers,  
particularly the HP LaserJet. send X-on codes at timed intervals (robust X-on/X-off), this  
feature is useful when the Caretaker Plus is connected to equipment which uses robust  
X-on/X-off. When this option is disabled, the Caretaker Plus allows the port to timeout;  
otherwise, the port would never timeout because of the robust X-on/X-off. The factory  
default is the reverse channel data timeout is disabled. To change the reverse channel  
data timeout, enter R to the choice prompt and answer Y to enable or N to disable  
reverse channel data timeout.  
Enter choice (U.R,A,F.X, or H for help) R<ENTER>  
Use reverse channel data timeout (YM)? N<ENTER>  
Allow Timeout On Busy (Ports 1-8)  
This command (on the advanced features menu) allows any serial port (except port O)  
to timeout even when the port is busy, i.e. DSR is low. The factory default is allow  
timeout when busy is enabled. Enter A to the choice prompt and answer Y or N to  
enable or disable allow timeout on busy.  
Enter choice (U.R.A,F,X, or H for help) <ENTER>  
Use allow timeout on busy (ports 1-8) (Y/N)7 Y<ENTER>  
Filter Characters  
This command (on the advanced features menu) allows a user-definable number of  
characters to be received before the characters are transmitted out port O. It is used if  
there is a problem of computers sending spurious data to a printer when the computer is  
turned on or off. The factory default is 0 characters, but may be changed to be from 1 to  
255 characters. Enter F to the choice prompt and enter the new filter character size.  
Enter choice (U,R,A.F.X, or H for help) <ENTER>  
Enter the filter size (0-255) <ENTER>  
Return To Previous Menu  
This command (on the advanced features menu) exits the advanced features menu and  
returns to the previous configuration menu. Enter X to the choice prompt.  
Enter choice (U,R,A,F.X, or H for help) X<ENTER>  
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Configuration Commands  
Configuration commands allow changing of the unit's setup parameters without the Use  
of a menu. They may be used on serial or parallel units. To enable processing of  
configuration commands, depress both of the unit's front panel switches. The MODE  
and BUSY LEDs will light. This indicates that the unit is in configuration mode. The unit  
must be in this mode to process configuration commands. To leave the configuration  
mode, depress both switches again. The MODE and BUSY LEDs will return to the state  
they were in prior to entering configuration mode. While in configuration mode, but not in  
the menu, the DATA LED will flicker in response to data received on port 1.  
Entering configuration mode will stop data transfer to the shared device, and also erase  
all data in the buffer. No new data can be loaded into the unit while in configuration  
mode. Configuration commands are recognized when input to PORT 1 ONLY. If a  
configuration command contains any syntax or value errors, it is ignored. A valid  
command is processed immediately upon receipt of the last character of the command  
and does not require a carriage return or line feed terminator. With serial units, carriage  
return is an illegal character in a configuration command, as it will cause entry into the  
configuration menu.  
Table 2. Configuration Commands  
Command  
Syntax  
Comments  
Serial Protocol  
Parallel Protocol  
Timeout  
!@FPabcd  
!@FPabcd  
See table 3 for full syntax  
See table 4 for full syntax  
!@Txxx xxx=002 to 255 Leading zeroes required  
Initialization string  
!@Ixxxxxxxx  
See explanation for  
syntax  
Formfeed enable  
Formfeed disable  
Keep command  
Filler characters  
!@NY  
!@NN  
!@K  
Must be used to save  
!@Cxxx xxx=000 to 255 Leading zeroes required  
Unidirectional XON/XOFF !@UY  
enable  
Unidirectional XON/XOFF !@UN  
disable  
Reverse data timeout  
enable  
!@RY  
Reverse data timeout  
disable  
!@RN  
Timeout on busy enable  
Timeout on bust disable  
Parallel enable logic  
enable  
!@BY  
!@BN  
!@PY  
Parallel enable logic  
disable  
Operator switch disable  
!@PN  
!@L  
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Protocol Command  
This command changes the communication protocol of a given port. If you enter a  
protocol that blocks communication with the unit or is otherwise undesirable, and you  
have not used KEEP, you may restore the previous format by powering the unit down  
and back up. Protocol codes differ for serial and parallel models. In the parallel models  
only port 0 has a changeable protocol. In the serial models any port may be changed.  
For command syntax see TABLE 3 for serial models and TABLE 4 for parallel models.  
Keep in mind that protocol changes are made when you exit the configuration mode.  
Table 3. Serial Protocol Command Syntax  
Command Syntax: !@Fpabcd  
where p = Port number  
a= Parity  
0 = none  
2 = odd  
6 = even  
A = mark  
E = space  
b = Flow control  
0=DTR/DSR  
8=X-on/X-off  
c = Data format  
0 = 1 stop,8 bits  
2 =1 Stop,7 bits  
4 = 1 stop,6 bits  
6 = 1 stop,5 bits  
8 = 2 stop,8 bits  
A = 2 stop,7 bits  
C = 2 stop,6 bits  
E = 1.5 stop,5 bits  
d = Baud rate  
0 = reserved  
1= 50  
2= 75  
3= 110  
4= 134.5  
5= 150  
6= 300  
7= 600  
8= 1200  
9= 1800  
A= 2400  
B= 3600  
C=4800  
D=7200  
E= 9600  
F= 19200  
Examples:  
To set port 3 to 4800 baud, 1 stop. 7 data bits, even parity, X-on/X-off the command is  
!@ F3682C  
To set port 5 to 1200 baud, 1 stop, 8 data bits, no parity, DTR/DSR the command is  
!@F50008  
Table 4. Parallel Protocol Command Syntax  
In a parallel unit only port 0 can have its protocol changed. This protocol command is  
used to support printers that do not have an acknowledge or busy signal.  
Command syntax: !@F00x00  
where x = 0 to use busy and acknowledge (Standard parallel interface)  
1 to use busy, ignore acknowledge  
2 to use acknowledge, ignore busy  
3 to ignore busy and acknowledge  
Example: To ignore busy the command would be:!@F00200  
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Parallel Enable Logic Command  
This command allows the Caretaker Plus to recognize when a computer that is  
connected to a parallel port on the Caretaker Plus is turned off so that the Caretaker  
Plus will not accept data from the PC. The factory default is to enable parallel enable  
logic. When this feature is enabled, the Caretaker Plus requires the INIT line to be high  
and the SELECT line to be low before receiving any data from the port. If a character  
other than Y or N is used no action is taken.  
Initialization String Command  
This command is used to change the initialization string. Enabling of the initialization  
string occurs when a valid string is entered. Disabling of the string is done by entering  
a string with the first character set to ASCII 00 (NULL). To enter the characters of the  
string, you type the ASCII number of each character in hexadecimal followed by an H  
without commas or spaces in between. Note that NULL serves as a terminator to the  
initialization string, so it will not be printed along with the string, and any characters  
following a NULL will be ignored.  
Command syntax is: !@issssssss  
where ssssssss is the new init string. To disable the string the first char must be 00.  
Examples:  
To enter the string <ESC>E .. . . · · · · · · · !@llBH45H<ENTER>  
To disable the string .... · · · · · · · · · · · . . . !@I<ENTER>  
Grounding  
These are Safety Class I products and must have an un-interruptible earth ground from  
the main power source to the product’s input wiring terminals, power cord, supplied  
power cord set, or chassis. Whenever it is likely that the protection has been impaired,  
disconnect the power cord until the ground has been restored.  
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OPERATIONS  
Initial State  
Following the successful completion of the power up tests, the Caretaker Plus turns all  
the port LEDs off. The BUSY LED may be lit if the shared device is busy.  
Normal Operation  
Input devices, usually computers, initiate requests to connect to the shared device by  
sending data to the Caretaker Plus. If no other ports are currently connected, connection  
with the shared device is made immediately. If other ports are currently connected, the  
requesting port must wait for all other ports ahead of it to use the shared device before it  
will be connected. An input device may send data to the unit's buffer while it is waiting to  
be connected.  
When data is received from the currently connected port, it is sent to the shared device if  
it is not busy; otherwise, the data is stored in the buffer until the shared device becomes  
ready. Data from a queued port is stored in the port's buffer until the port becomes  
active; at that time, the data is sent to the shared device whenever it is not busy. For  
serial models only, data that is received from the shared device is sent to the currently  
connected port if it is not busy; otherwise, the data is stored in the buffer until the port  
becomes ready.  
For serial models, when a port is connected to the shared device, full duplex  
communication is in effect; data can flow in either direction between the connected port  
and the shared device. For parallel models, data can flow only in one direction, from the  
connected port to the shared device.  
The LED corresponding to the port currently connected to the shared device will flash  
and LEDs corresponding to ports waiting for use of the shared device will be lit steadily.  
If no data is sent to or from the currently connected port for the duration of the timeout  
setting and the shared device and the connected input device are not busy, the current  
port will be disconnected and its LED will go from the flashing state to the unlit state. The  
next port in the queue will become connected and its LED will go from the steadily lit  
state to the flashing state. Any data sent to the buffer while waiting will now be sent to  
the shared device.  
The timeout is reset by four possible conditions:  
1. Data is transmitted by the connected input device  
2. Data is transmitted by the shared device (if REVERSE CHANNEL DATA TIMEOUT is  
enabled)  
3. The shared device is busy  
4. The connected input device is busy (if TIMEOUT ON BUSY is disabled). The timeout  
period begins only when none of these conditions exist. To determine the state of the  
unit by its LEDs see TABLE 5.  
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Buffer Characteristics  
The switch may have a buffer memory of 16K, 256K, 512K, 1 megabyte,  
or 2 megabytes. The Caretaker Plus uses an intelligent algorithm to allocate memory.  
The buffer is dynamically allocated which means that any port can utilize as much buffer  
as required. The buffer is reclaimed to be used again as the data in the buffer is sent to  
its destination. As the memory becomes full, the reclaimed memory is first distributed to  
a currently active port, then to the queued ports as needed. However, the currently  
active port always has priority over the queued ports for memory. If the memory used for  
the queued ports becomes full, the queued ports are flow controlled off until the  
memory available for the queued ports becomes available. If all the memory available  
becomes full, the active port is flow controlled off until some memory becomes available.  
The buffer is divided in 32 memory allocation units. Each input port will always have one  
memory unit allocated to it.  
Unit Software Reset Function  
By entering and then immediately leaving configuration mode, (pressing both switches  
and releasing them to illuminate the MODE and BUSY LEDs, then pressing them again),  
a software reset is performed. All buffers are flushed; flow control flags are reset, and  
the unit restarts normal operation.  
Printer Initialization Signal (Parallel Models Only)  
At the completion of the power up test on parallel models, the INIT signal on the parallel  
interface is pulsed. This resets most printers.  
Table 5. LED operation Display  
Legend: M = Mode LED D = Data LED B = Busy LED E = Error LED  
● = LED on  
O = LED off  
☼ = LED flashing  
X = may vary, described below  
M
O
O
D
O
X
B
O
X
E
1
2
3
4
5
6
7
8
O
X
EXPLANATION  
Note 1  
O
O
X
O
X
O
X
O
X
O
X
O
X
O
X
X
Note 2  
X
X
O
O
X
X
X
X
X
X
X
X
Note 3  
Note 4  
X ●  
O
O
O
O
O
O
O
O
● ● ●  
O
O
X
O
X
O
X
O
X
O
X
O
X
O
X
O
X
Note 5  
Note 6  
O
O
X
Note 1: Normal operation - unit is idle. All LEDs off.  
Note 2: Normal operation - unit handling data. Data LED is on when data being transmitted or received  
on the shared device. Busy LED is on when the shared device is busy. Error LED is on when a parallel  
unit has an Interface error. Port LEDs fash when connected to shared device; glow steadily when  
waiting for connection.  
Note 3: Normal operation - unit in Row control display mode. Data LED operates as above. Busy LED  
lights when the shared device input buffer is full. Port LEDs light when the corresponding buffer is full.  
Note 4: Unit in configuration mode. Data LED lights in response to data input on Port 1.  
Note 5: Unit is in configuration mode and the menu is in use.  
Note 6: Buffer overflow has occurred. Port LEDs corresponding to overflowed ports will Rash rapidly in  
unison with the Error LED. Busy LED flashes in unison with the Error LED to indicate an overflow on the  
shared device's input buffer.  
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Timeout  
The default setting of 20 seconds is sufficient for most applications. Some computers,  
however, start printing and then pause to do some type of calculation or processing and  
then resume printing. If this pause is greater than the timeout setting of the switch. then  
another computer could start printing and possibly interrupt the printing of the first job  
and ruin its printout. In this case, it is necessary to increase the value of the timeout  
through the configuration process. Please refer to the timeout in the section on  
CONFIGURATION for more information.  
NOTE: In the following examples  
(CR) means hit the enter key,  
(F6) means hit the F6 key (this will echo on the computer as hZ)  
The example is given for COM1 of the PC connected to a serial unit.  
Substitute with COM2 if your serial port is COM2 or LPTI or LPT2 if you  
have a parallel unit.  
To set the timeout to 60 seconds from a PC, do the following steps:  
1. Momentarily hold in the advance and select switches until the mode and busy lights  
light up.  
2. From the computer connected to port 1 on the unit type in the following:  
COPY CON COM1(CR)  
!@T060!@(F6)(CR)  
1 file(s) copied  
When typed at the DOS prompt. you get a blank line  
Enter the timeout command and keep command  
This message displays and you return to DOS  
3. Momentarily hold in the advance and select switches until the mode and busy lights  
turn off.  
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Initialization String  
The initialization string is used to reset the printer to a defined state at the beginning of  
each job. In this way the printer settings of the last person to print do not affect the  
print settings of the next person to print. The most common string used is the reset  
command in the printer.  
The reset sequence for HP laser printers is ESC E. For Epson printers the reset  
sequence is ESC O. To configure the switch to use the initialization string you must  
send the proper command to the switch. The following example will set the string for  
an HP laser printer.  
To set the initialization string to ESC E from a PC do the following steps:  
1. Momentarily hold in the advance and select switches until the mode and busy lights  
light up.  
2. From the computer connected to port 1 on the unit type in the following:  
COPY CON COM1(CR) When typed at the DOS prompt, you get a blank line  
!@@1BH45H(CR)  
!@K(F6)  
Enter the initialization string  
Enter the keep command  
1 Flle(s) copied  
This message displays and you return to DOS  
3. Momentarily hold in the advance and select switches until the mode and busy lights  
turn off.  
Form Feed  
The form feed is used to automatically eject the page when your application is not  
capable of doing so. Most modern word processors do so. Some of the older  
applications do not. If you get a lot of jobs where two printouts are on the same page,  
then you may need to enable the form feed.  
To enable the form feed, do the following steps:  
1. Momentarily hold in the advance and select switches until the mode and busy lights  
light up.  
2. From the computer connected to port 1 on the unit type in the following:  
COPY CON COM1(CR) When typed at the DOS prompt, you get a blank line  
!@NYI@K(F6)(CR)  
1 File(s) copied  
Enter the form feed enable and keep command  
This message displays and you return to DOS  
Momentarily hold in the advance and select switches until the mode and busy lights  
turn off.  
Adding More Memory  
If your computer seems to be slow to print and you are sending a lot of data or there  
are many people printing at once, then you may need more memory. Please refer to  
Appendix C for more information.  
Changing the Serial Baud Rate  
If your computer seems to be slow to print and you are sending a lot of graphics or  
downloading laser printer fonts, then you should make sure the baud rate is set to  
19,200 baud and not 9600 baud This will significantly improve the print speed.  
Please refer to the CONFIGURATION section for more information  
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Power Up Initial Display  
When powering on, the Caretaker Plus goes through a power up self-test which checks  
the main functions of its electronics. The leftmost LED labeled POWER should glow  
green and the other red LEDs should all turn on. Then the unit will cycle through four  
tests lighting up LEDs 1 through 4 as each test is performed. Errors are indicated by the  
ERROR LED lighting and the unit halting. See TABLE 6 for the full sequence of the  
power up LED display and TABLE 7 for error displays.  
Table 6. LED Power Up Display  
Legend: M = Mode LED D = Data LED B = Busy LED E = Error LED  
= LED on  
O = LED off  
X = may vary, described below  
☼ = LED flashing  
M D  
B
E
1
2
3
4
5
6
7
8
EXPLANATION  
1st ● ● ● ●  
● ● ● ● ● ● ● ●  
All LEDs on  
2nd  
O
O
O
O
O
O
O
O
O O  
O O  
O O  
O O  
O O  
O O  
O O  
O O  
O
O
O
O
O
O
O
O
O  
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Test 1: EPROM checker  
Test 2: 16K RAM buffer  
Test 2: 64K RAM buffer  
Test 2: 256K RAM buffer  
Test 2: 512K RAM buffer  
Test 2: 1M RAM buffer  
Test 2: 2M RAM buffer  
Test 3: Static RAM  
3rd  
O O  
O O  
O O  
O O  
O
O
O ●  
O ● ●  
O ● ● ●  
O O O ● ● ● ●  
O O ● ● ● ● ●  
4th  
O O O  
O
O
O
O
5th  
6th  
O
O
O O  
O O  
O
O
O O O O  
O
O
O
O
O
O
Non-volatile RAM  
Unit ready  
O O  
O
O
O
NOTE: The BUSY LED may be lit when the unit enters the ready state. This is  
dependent upon the state of the shared device.  
Program Checksum Test  
This test verifies that the unit's internal program is valid by performing a checksum test.  
If a fault exists, a program checksum error shows on the LEDs as error 1, as shown in  
TABLE 7. The unit will immediately halt. This error requires that the unit be serviced.  
Buffer Memory Sizing and Read/Write Test  
In this test, the Caretaker Plus automatically determines amount of buffer memory  
present and indicates the amount via the status LEDs as shown in TABLE a. The buffer  
memory is then tested to ensure that the memory system is operational. Any failure will  
cause the error 2 condition to be displayed, as shown in TABLE 7, indicating that a  
buffer memory data error has occurred. The unit will not continue its further tests and will  
halt. An error indicates that the unit requires servicing.  
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Static Ram Read/Write Test  
The next test is for static ram. Since the Caretaker Plus has no static ram, this test is  
displayed as shown in TABLE 6 for consistency with other Rose products.  
Non-volatile Ram Tests  
The fourth and final power up test is for the non-volatile memory. A series of tests are  
performed. An error shown by the LEDs as error 4 indicates that the data in the  
nonvolatile memory has been corrupted. To attempt to rewrite the default parameters  
push SELECT switch then the ADVANCE switch. If the error condition goes out, the unit  
may be powered up again to see if it halts at error 4 again. If it still displays error 4, a  
fatal error has occurred and servicing is required. If the unit displays an error 45, the  
default parameters were not written correctly. This is a fatal error and servicing is  
required.  
If the unit recovers from the error the configuration parameters have been returned to  
their default settings and the unit must be configured again if these default settings are  
unacceptable. This condition should not normally occur. If it does it indicates that  
possibly the unit has been subjected to a strong static discharge or surge on its  
incoming power or signal lines. The other possibility is an internal chip failure.  
In addition to the data in the non-volatile ram, several others tests on the non-volatile  
ram are done. If any error 4 occurs and a reset to default does not correct it, the unit  
needs servicing. The additional errors listed below are for technical support purposes  
only.  
Front Panel Switches  
The front panel switches, labeled SELECT and ADVANCE, are used to enter and exit  
the configuration menu and to enter and exit the flow control display mode. These  
switches can be disabled under program control. This is done by either using the  
'Operator Switch Disable' command or through the configuration menu. Note that if  
these switches are disabled and the setting is stored in non-volatile memory, the only  
way to re-enable the switches is by resetting the Caretaker Plus to the factory default  
settings. See the 'Diagnostics' section for more information.  
Data LED, Busy LED, and Error LED  
The DATA LED flickers when data is sent in or out the shared device's port. When large  
blocks of data are sent to or received from the shared device, the DATA LED will be on  
continuously. The BUSY LED lights when the shared device is telling Caretaker Plus not  
to send data. For parallel models only, the ERROR LED lights to indicate a printer error  
or device off-line.  
Buffer Overflow Error Display (Serial Models Only)  
If any device fails to follow flow control protocol and transmits data when the Caretaker  
Plus is instructing it not to, an overflow may occur. If this happens, the ERROR LED and  
the overflowed port's LED will flash rapidly in unison. If the overflow was on the input  
buffer for the shared device, the BUSY LED will flash along with the ERROR LED. This  
indicates a buffer overflow has occurred and data may have been lost. This display will  
remain until acknowledged by pressing the advance switch. Other than lost data on the  
overflowed port, operation of the unit is not affected by this display. If the buffer is not  
cleared, data transfer continues, but the data may be unreliable. If more than one port  
overflows, multiple port LEDs will flash in unison with the ERROR LED. When this  
display occurs, the cabling may be incorrect, or a program that uses only X-on/X-off flow  
control may be accessing a port that is configured for DTR flow control.  
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Flow Control Display Mode (Serial Models Only)  
By pressing the ADVANCE switch during normal operation, the LED display is  
switched to the flow control display mode. The MODE LED illuminates to indicate this  
mode is active. You may return to normal display mode by pressing the ADVANCE  
switch again. During flow control display mode, the corresponding port LEDs light only  
when the Caretaker Plus has instructed the connected device to stop sending data via  
the port's currently selected protocol. Thus, an input device should not be transmitting  
data to the Caretaker Plus when its LED is lit. The only time Caretaker Plus instructs a  
device to stop sending data is when the device's buffer is full. Thus this display may be  
used to monitor buffer status. Also, in this mode the BUSY LED reflects the flow control  
status of the shared device's input buffer.  
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TROUBLESHOOTING  
Troubleshooting  
Common Problems and Solutions  
I. Missing blocks of data on shared device and/or buffer  
Overflow error display occurs - serial only  
A. Flow control is not set or wired properly  
If your device uses X-on/X-off, ensure that the corresponding port is set for  
X-on/X-off. If you are using DTR you have a miswired cable, see Section IIA  
below.  
II. Nothing happens when sending data  
A. Improper cabling  
See 'CABLING' section.  
B. Protocol does not match  
Protocol on serial units is the baud rate, parity type, number of stop bits, bit  
size of the characters (5, 6, 7, or 8), and the handshaking type (DTR or X-on/X-  
off). Protocol in your device must match the protocol in the unit. See 'CON-  
FIGURATION' section.  
C. Printer or computer connected to wrong port.  
Input ports are 1-8, output port is O. Ensure devices are connected to proper  
ports.  
III. Garbled data received at shared device  
A. Protocol does not match  
See Section ll B above.  
B. Flow control  
See Section IA above.  
C. Wiring interference  
This may occur on computers which are a long distance from the Caretaker  
Plus. See 'CABLING' section for information on cable routing.  
IV. Computer locks up  
A. Buffer is full  
Place unit in flow control display mode. If the computer port's LED is lit, the  
buffer is full. The shared device must accept some data to empty the buffer and  
allow the unit to accept more data from the computer. This will unlock the  
computer.  
B. Flow control improperly wired  
See Section IA above.  
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V. Port(s) do not time out  
A. 'Robust' X-on/X-off present.  
Some printers, particularly the HP LaserJet, send X-on codes at timed  
intervals. Set the 'REVERSE CHANNEL DATA TIMEOUT' feature to Y. See  
'CONFIGURATION' section for information on 'REVERSE CHANNEL DATA  
TIMEOUT'. Other options are disconnect pin 3 on port O, configure the  
printer for normal X-on/X-off, or configure port O to X-on/X-off.  
B. Improper wiring  
A computer which is powered off is making a port busy. Do not connect this  
computer's pin 6 to the unit. Alternately, enable ALLOW TIMEOUT ON  
BUSY. See 'CONFIGURATION' section for information on 'ALLOW  
TIMEOUT ON BUSY'.  
Table 7. LED Error Display  
Legend: M = Mode LED D = Data LED B = Busy LED E = Error LED  
● = LED on  
O = LED off  
☼ = LED flashing  
X = may vary, described below  
M
D
B
E
1
2
3
4
5
6
7
8
EXPLANATION  
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O ● ●  
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Error 1  
O O ●  
Error 2  
O ●  
O ●  
O
O
O
O
O
O
O
O
O
Error 3  
O
Error 4  
O ● ●  
Error 41  
Error 43  
Error 45  
Error 46  
Error 47  
Error 48  
O ●  
O ●  
O ●  
O ●  
O ●  
O
O
O
O
O
● ●  
O
O
O
O
● ●  
O
O
O
O ●  
Error 1 EPROM checksum failure  
Error 2 RAM buffer memory failure  
Error 3 Static ram failure  
Error 4 Non-volatile ram checksum failure  
Error 41 Non-volatile ram signature doesn't match EPROM signature  
Error 43 Non-volatile ram memory failure  
Error 45 Restore to default configuration failure  
Error 46 Unable to recognize all ports  
Error 47 Number of ports doesn't match number listed in the non-volatile ram  
Error 48 Wrong EPROM version  
Any error not listed requires that the unit be serviced  
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Maintenance and Repair  
The exterior surface of the unit may be wiped with a damp cloth to keep it clean. The  
unit does not contain any jumpers or serviceable parts inside. Opening the unit  
invalidates the warranty except in the case of an authorized memory upgrade or  
firmware updates. Any malfunction of the unit should be reported to a factory authorized  
repair center for service. Any discrepancies in the operation of the unit according to this  
manual should be reported to the Technical Support department of Rose Electronics.  
Technical Support  
If you cannot determine the nature of a problem, please call Rose Electronics and ask  
for Technical Support. If possible, call from a phone located near the unit--we may be  
able to solve your problem directly over the phone. If we cannot solve your problem, and  
determine that the fault is in the unit, we will issue a Return Authorization (RA) number  
which must appear on the outside of all returned products. The unit should be double-  
packed in the original container, insured, and shipped to the address given to you by our  
Technical Support representative.  
To speak to a Technical Support representative, call (713) 933-7673 from 8:O0-Noon  
and 1:00-5:00 CST, Monday through Friday.  
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DIAGNOSTICS  
Diagnostic Modes  
The Caretaker Plus has an extensive self-test diagnostic capability. Normally these  
features are only accessed by a technician to determine a failure with the unit.  
Through the diagnostic modes, you can:  
Print the configuration menu  
Print a repeating test pattern on the printer  
Restore the non-volatile memory to its factory defaults  
Test the EPROM, buffer memory, and non-volatile memory  
Test all signals on each I/O port  
There are three diagnostic modes that can be entered.  
1. Short test - Print configuration menu, printer test pattern, and reset non-volatile  
memory to factory default are accessed through this mode. This test is called the  
short test because its test of the dynamic memory (test #2) is not as long as the  
other tests.  
2. Long test with loopback connectors - tests all functions of the unit except the I/O  
ports are only tested for open loop conditions.  
3. Long test with no loopback connectors - tests all functions of the unit including that  
the I/O port drivers and receivers are all functional.  
Short Test  
This mode is entered by holding down both front panel switches while turning the unit's  
power on. The unit will continuously go through its power up sequence and stop if it  
encounters an error, displaying the error on the LEDs and indicating servicing is  
required. Note that the memory test (test t2) performed in this mode is more extensive  
and thus takes more time to execute than in the power up test. It is not as extensive as  
the long tests. To leave this mode power down the unit, then power back up with no  
switches pressed.  
Restore To Factory Default  
There are two ways to reload the factory default configuration. The first is if an error  
occurs in powering up the unit and the unit halts with error 4 (ERROR LED and LED 4  
are lit). To reload the defaults push the advance switch, the unit is then ready for  
operation. if this occurs frequently, it indicates excessive static electricity or poor power  
to the unit.  
The other method of reloading the factory defaults is through the short test diagnostic  
mode. This mode is entered by powering the unit off and pressing both the advance and  
select switch and then powering up the unit. Release the advance switch (the one on the  
left) and continue to hold the select switch (the one on the right) while the switch cycles  
through its normal power up sequence. The switch will halt with LED 4 lit. Release the  
select switch. Momentarily press the advance switch and all lights should come on to  
indicate a successful reload of the factory defaults. The unit stays in this short diagnostic  
mode and continuously cycles through the 4 tests. On a subsequent cycle, It you receive  
an error 4 (restore to default failure), the unit must be serviced. To resume normal  
operation, you must power the unit off and back on. The unit is now set at its factory  
defaults. You must reconfigure the unit, if necessary, to correspond to your equipment  
settings.  
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Print Configuration/Test Pattern Function  
Holding both switches down at the end of test 4 causes the unit to print its configuration  
out to port O, as shown in TABLE 8. Holding both switches down a second time at the  
end of test 4 causes a print exerciser to run, which sends a repeating test pattern out to  
the device on port O. To stop the exerciser, press both switches again. The exerciser  
may be started and stopped again the same way. The exerciser follows the protocol  
assigned to port O.  
Table 8 Print Configuration  
Serial Units  
CARETAKER PLUS CONFIGURATION Rev 3.8 COPYRIGHT 1986-91 ROSE  
ELECTRONICS  
Installed memory 64K Front panel switches … ENABLED  
Timeout ........········ 20 Seconds Form feed ......... DISABLED  
Initialization String .. DISABLED  
....-. Current settings -----  
Port Baud Parity Length Stop Flow  
0
1
2
3
4
9600  
9600  
9600  
9600  
9600  
NONE 8  
NONE 8  
NONE 8  
NONE 8  
NONE 8  
1
1
1
1
1
DTR  
DTR  
DTR  
DTR  
DTR  
Unidirectional Xon/Xoff .············ ENABLED  
Reverse Channel Data Timeout…… DISABLED  
Allow Timeout On Busy (Ports 1-8) ... Yes  
Filter size ............·········--·· 0 Characters  
Parallel Units  
CARETAKER PLUS CONFIGURATION ReV 3.8 COPYRIGHT 1986-81 ROSE  
ELECTRONICS  
Installed memory ....··· 64K Front panel switches.. ENABLED  
Timeout .........---- 20 Seconds  
Initialization String .. DISABLED  
Ignore ACK .... NO  
Form feed .......······ DISABLED  
Ignore BUSY ... NO  
Parallel Enable Logic ... ENABLED  
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DIAGNOSTICS  
Long Test Without Loopback  
This group of tests are entered by pressing the select switch only while powering up the  
unit with the on/off switch. All equipment should be disconnected from the unit prior to  
running this test.  
Test 1 - EPROM program checksum test is the same as described previously.  
Test 2 - Dynamic ram test checks the dynamic ram more extensively than the short test  
or the power up test. The test takes longer to perform. If this test fails (ERROR LED and  
LED #2 are lit) then the unit must be serviced. Other LEDs #5-#8 may also be lit  
indicating the amount of memory that is installed.  
The failing board and memory device can be determined by pressing the advance  
switch. The MODE LED will be lit if the failing board is the base mother board or the  
bottom-most memory board installed. The DATA LED will be lit if the failing board is the  
second from the bottom. The BUSY LED will be lit for the third board, and the ERROR  
will be lit for the fourth board. The LEDS 1-8 correspond to the physical placement of the  
failing chip. If the failing chip is the one all the way to the left, then LED 1 will be lit. If the  
failing chip is the one all the way to the right, then LED 8 will be lit. The chips in the  
middle correspond appropriately. Hitting the select switch will retry the test. In order to  
bypass this test completely, both the advance and the select switches must be pressed.  
Test 3 - Same as static ram read/write test above  
Test 4 - Same as non-volatile ram checksum test above  
Test 5 - Port addressing test checks if the contents of non-volatile memory agree with  
the port configuration. If this test fails (ERROR LED and LED #5 are lit) then the  
configuration memory has been corrupted or a port communication chip has failed.  
Reload the factory default settings as described below and retry the test. Make sure  
there are no cables connected to the caretaker Plus. Re-run the test, if the test still fails  
then the unit must be serviced. The advance switch may be pressed to determine which  
port is the failing port. The MODE, DATA, and BUSY LEDs will be lit. The LEDs of all  
ports which pass will be lit (ERROR led is used for port 0). A failing port will have its  
corresponding LED off. The select switch may be pressed to execute the test again. In  
order to bypass this test completely, both the advance and the select switch may be  
pressed.  
Test 6 - Module test ensures that there are no signal shorts on a port, in order for this  
test to pass, no equipment should be connected to the Caretaker Plus. If this test fails  
(ERROR LED and LED B6 are lit) then a port communication chip has failed and the unit  
must be serviced.  
The advance switch may be pressed to determine which port is the failing port. MODE,  
DATA, and BUSY will all be flashing. The LEDs or all ports which pass will be flashing  
(ERROR LED is used for port 9). A failing port will have its corresponding LED steadily  
lit. Ports not installed will have their corresponding LEDs off. The select switch may be  
pressed to execute the test again. In order to bypass this test completely, both the  
advance and the select switches may be pressed.  
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Long Test with Loopback  
This test is entered by pressing the advance switch only while powering up the unit with  
the on/off switch. Special loopback connectors should be connected to each Caretaker  
Plus port.  
Tests 1-5 - These are the same as tests 1-5 of long test without loopback.  
Test 6 - The loopback test assures that all port signals are functional. In order for this  
test to pass, special loopback connectors must be installed on each port, see TABLE 9.  
if this test fails (ERROR LED and LED #6 are lit) then a port communication chip has  
failed and the unit must be serviced.  
The advance switch may be pressed to determine which port is the failing port. MODE,  
DATA, and BUSY will all be flashing. The LEDs of all ports which pass will be flashing. A  
failing port will have its corresponding LED steadily lit (ERROR LED is used for port O).  
Ports not installed will have their corresponding LEDs off. The select switch may be  
pressed to execute the test again. In order to bypass this test completely, both the  
advance and the select switched may be pressed.  
Table 9. Loopback Test Connectors  
Serial Loopback  
Connector  
Parallel Loopback  
Connector  
Parallel Loopback  
Connector  
Male 25 Pin D  
Male 36 Pin Centronics  
Male 25 Pin D  
2……..….3  
6……….20  
1……..….8  
2……….13  
3……….32  
4……….12  
5……….31  
6……….36  
7…..10, 14  
9……….11  
1…..…….8  
3……….15  
4……….12  
5……….16  
6……….17  
7…..10, 14  
9……….11  
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APPENDICES  
Appendix A: Serial Cabling  
The diagrams below show the Caretaker Plus pinout on the left and all other devices on  
the right. Read across to find the pinout. Connector types shown below refer to the  
connector on the device, not on the cable. NOTE: Caretaker Plus is abbreviated CTP.  
Serial Computers  
CTP  
IBM PC  
25pin  
male  
3
IBM AT  
9 pin  
male  
2
Mac  
9 pin  
female  
9
Mac+  
8 pin  
circular  
25 pin  
female  
2
3
5
3
2
3
5
7
20  
7
5
3-8  
7
4-8  
2
5-6-8  
1-6-8  
Serial Printers  
CTP  
HP Laser  
Xerox  
4045  
laser  
25 pin  
female  
3
Apple  
Image-  
writer  
25 pin  
Apple  
Image-  
writer II  
8 pin  
Jet  
25 pin  
25 pin  
female  
female  
female  
circular  
2
3
7
6
4
3
2
7
20  
-
3
2
7
20  
-
5
3
4-8  
1
2
7
20  
5-6-8  
-
Serial Printers/Plotters  
CTP  
Epson Okidata* Diablo NEC  
MX type 82-193  
HP  
Calcomp Hou.Inst.  
25 pin female  
630 spinwr. plotters plotters plotters  
2
3
7
6
4
3
2
7
11  
6
3
2
7
11  
5-6  
3
2
7
11  
6
3
2
7
3
2
7
20  
5-6  
3
2
7
20  
5-6  
3
2
7
20  
5-6  
19  
5-6-8  
*Jumper setting for ready on pin 11.  
Other Devices  
Hayes  
Multi-  
VT-100  
CTP  
Rose*  
Rose**  
Vax  
25 pin female  
25 pin female  
8 pin female  
25 pin female  
modem plexers terminal  
2
3
4
2
3
4
2
3
4
3
2
-
3
2
-
6
4
-
3
2
-
6
7
20  
6
7
20  
6
7
20  
-
7
-
20  
7
6
3
5
2
-
7
-
*
Refers to any Rose switching device with a 25 pin serial port (Caretaker. Caretaker  
Plus, Porter, Super Switch, or Master Switch).  
** Refers to any Rose switching device with a RJ45 8 pin serial port (MSU or MSN  
Series Master Switch, or FastPrint).  
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Appendix B: Pinout Specifications  
Serial Models  
DB25 Female  
Pin  
2
3
4
6
Signal Name  
Transmit data  
Receive data  
Acronym I/O  
Description  
TXD  
RXD  
Output  
Input  
Serial data from port  
Serial data to port  
Always high  
Request to send RTS  
Output  
Input  
Common  
output  
Data set ready  
Signal ground  
Terminal ready  
DSR  
GND  
DTR  
Low inhibits transmit data  
7
20  
Pin 20 is the hardware flow control output. Pin 6 is the hardware flow control input.  
Pin 6 has an internal pull-up to set it high when no signal is connected.  
Parallel Models  
Centronics 36 Female  
DB25 Female  
C36F DB25  
Pin  
1
2
3
4
5
6
7
8
Pin  
1
2
3
4
5
6
7
8
Signal Name Port 0 Port 1-8 Description  
STROBE  
DATA 0  
DATA 1  
DATA 2  
DATA 3  
DATA 4  
DATA 5  
DATA 6  
DATA 7  
ACK  
output input  
output input  
output input  
output input  
output input  
output input  
output input  
output input  
output input  
Data transfer when pulsed low  
Data LSB  
9
9
Data MSB  
10  
11  
12  
13  
14  
16  
10  
11  
12  
13  
14  
input  
input  
input  
output  
output  
output  
output  
Pulsed low for next transfer  
If high inhibits data flow  
Input unused, low when output  
Input unused, high when output  
Input unused, output high  
Wired common all ports  
Wired common all ports  
Must be high to receive data  
Input unused, high when output  
Wired common all ports  
Must be low to receive data  
BUSY  
PAPER END  
SELECT OUT input  
AUTOFEED  
GROUND  
output input  
-------- --------  
-------- --------  
output Input  
19-30 18-25 GROUND  
31  
32  
33  
36  
16  
15  
-
INITIAL  
ERROR  
Input  
output  
GROUND  
SELECT IN  
-------- --------  
output input  
17  
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Appendix C: MP1000 Memory Board  
This memory board provides optional, add-on buffer expansion for the Caretaker Plus.  
Installing this board expands the Caretaker Plus buffer from the standard 64K to 256K,  
512K, or 1 MB. "Stacking" two boards allows the buffer to be increased to 2 MB. This  
card requires the use of 256K x 4 DRAM chips (standard 20-pin DIP type; the speed  
doesn't matter).  
About the Board  
This unit consists of a socketed printed circuit board, with spaces for eight DRAM  
chips. Two 20-pin extensions on the unit's bottom plug directly into the Caretaker Plus  
motherboard (where the two DRAM chips for the basic 64K buffer go) or may be  
plugged into another board for expansion. Two threaded metal spacers are included to  
secure the board to the motherboard, or to another expansion board.  
CAUTION! This board is sensitive to static electricity. Handle it only by the edges, and  
only if using a grounding strap or other commercial grounding device. The expansion  
pins on the underside of the board are delicate. Be careful not to bend or break them  
during installation.  
Installation  
Opening the Caretaker Plus  
Unplug the Caretaker Plus power cord. Remove the two screws from either side of the  
unit, and remove the top cover.  
Removing the Standard DRAMs  
Remove the two socketed 64K DRAM chips from the Caretaker's motherboard. (They  
are numbered U13 and U14 on the board, and are positioned vertically near LEDs 7  
and 8). These will not be reused.  
Setting the Jumper Black  
For each board you're using, position the jumper block's small wire jumper. If using  
only one board, it should be in Position 1 (far left). For two boards, the second (top)  
board's jumper should be at Position 2 (second from left).  
Installing Jack Screws on the Motherboard  
If your Caretaker Plus does not have threaded spacers (jack screws) on the  
motherboard. you will have to install them. Rose Electronics can supply you with the  
appropriate jack screws. Begin by removing the three screws from the lower rear of  
the Caretaker Plus. Remove any screws from the bottom of the cabinet, noting where  
they came from. The motherboard and back panel will now separate from the  
front/bottom cabinet. You may now install the jack screws onto the motherboard, using  
the memory board as a guide as to which holes to use. Be careful not to use metallic  
washers of a size such that they short together circuits on the motherboard.  
Reassemble the mother-board/back panel by reversing the steps taken to remove it.  
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Installing the Board  
Carefully plug the expansion pins of the board (the first board, if using two) onto the  
motherboard's sockets where the 64K chips were removed. Fasten the board down  
using the two threaded spacers. Screw them into the motherboard's existing spacers  
(after removing two small Philips-head screws that may be in place). The spacers should  
be finger-tight. If using two boards, stack them by plugging the expansion pins of one  
into the expansion sockets of another. (Be sure the jumpers are correct!). Screw and  
tighten the spacers for each board.  
Once Completed...  
Replace the top cover and re-fasten the outside screws. Plug the power cord back in  
and turn the switch "On". Your Caretaker Plus will now use the full amount of buffer you  
have installed.  
Adding Chips to an Empty Board or Adding Additional Chips  
A board can be upgraded from 256K to 512K, from 2561< to 1MB, or from 512K to 1MB.  
To obtain 2MB an additional board must be installed.  
The sockets are numbered 1 through 8 from left to right. Pin 1 of each socket is at top  
left; match this with Pin 1 of the chip itself. located to the left of a small indentation at the  
top end of the chip.  
The memory chips are very sensitive to static electricity. Avoid touching their pins. Use  
an anti-static bag or work pad and/or wrist grounding strap when handling the chips.  
For a 256k buffer, chips must be installed in sockets U1 and U5.  
For a 512K buffer, chips must be installed in sockets U1, U2, U5, and U6.  
For a full 1 MB, chips must be installed in all eight sockets.  
If more than one board is used all sockets on each board must be filled.  
Verification of Installation  
As usual, when the switch is powered on, it will perform four self-tests including a buffer  
check (Test #2). If the self-test locates a DRAM problem, the LED display will show an  
error status on its LEDs. This display not only indicates a particular board but a  
particular chip or part of a chip that is defective. See the 'Troubleshooting' section for  
more information.  
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Appendix D: Factory Defaults  
Upon receiving the Caretaker Plus from the factory, or restoring the unit to default  
parameters (see 'RESTORE TO DEFAULT FUNCTION'),  
The factory default settings are:  
Timeout: 20 seconds  
Protocol Serial: 9600 baud, no parity, 8 bits, 1 stop, DTR flow control  
Protocol Parallel: Use busy and acknowledge  
Form Feed: Off  
Initialization String: None  
Unidirectional X-on/X-off: Yes  
Parallel Enable Logic: Yes  
Reverse Channel Data Timeout: No  
Flow Timeout on Busy (Ports 1-8): Yes  
Filter Size: O characters  
Appendix E: General Specifications  
Serial Models  
Electrical: RS232 -9 to +9 volts  
Protocol: Asynchronous; DTR/DSR, X-on/X-off flow control  
Baud Rate: 50-19200 baud  
Word Length: 5, 6. 7, or 8  
Parity: odd, even, mark, space, or none  
Stop bits: 1 or 2  
Parallel Models  
Electrical: TTL levels  
protocol Centronics compatible STBIACWBUSY interface  
Size and Weight  
10.5" wide X 3.5" high X 5.0" deep 5 ports: 7 Ibs 9 ports: 8 Ibs  
Chassis  
Steel tan painted enclosure, rear mounted connectors  
Aluminum black anodized 5.25" X 19" rack mount (optional)  
Power  
110 volt, 10 VA external wall mount adapter (standard)  
220 volt, 10 VA external floor mount adapter (optional)  
110 volt, 10 VA external floor mount adapter (optional)  
Display  
Port status LEDS: 1-8  
Unit status LEDs: Power, Mode, Data, Busy, Error  
Environment  
0-70 degrees C., 0-95% relative humidity  
Connectors  
Serial: DB25 female  
Parallel: Centronics 36 female or DB25 female  
Warranty  
1 year parts and labor. Extended warranty available  
CARETAKER PLUS INSTALLATION AND OPERATIONS MANUAL  
34  
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10707 Stancliff Road  
Houston, Texas 77099  
Phone: (281) 933-7673  
WWW.ROSE.COM  
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