UNO-2170
Celeron M Universal Network
Controller with PC/104 extension
User Manual
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Product Warranty
Advantech warrants to you, the original purchaser, that each of its products
will be free from defects in materials and workmanship for one year from the
date of purchase.
This warranty does not apply to any products that have been repaired or altered
by persons other than repair personnel authorized by Advantech, or which have
been subject to misuse, abuse, accident or improper installation. Advantech
assumes no liability under the terms of this warranty as a consequence of such
events.
Because of Advantech high quality-control standards and rigorous testing,
most of our customers never need to use our repair service. If an Advantech
product is defective, it will be repaired or replaced at no charge during the
warranty period. For out-of-warranty repairs, you will be billed according to
the cost of replacement materials, service time and freight. Please consult your
dealer for more details. If you think you have a defective product, follow these
steps:
Step 1. Collect all the information about the problem encountered. (For
example, CPU speed, Advantech products used, other hardware and
software used, etc.) Note anything abnormal and list any on- screen
messages you get when the problem occurs.
Step 2. Call your dealer and describe the problem. Please have your man- ual,
product, and any helpful information readily available.
Step 3. If your product is diagnosed as defective, obtain an RMA (return
merchandize authorization) number from your dealer. This allows us
to process your return more quickly.
Step 4. Carefully pack the defective product, a fully completed Repair and
Replacement Order Card and a photocopy proof of purchase date (such
as your sales receipt) in a shippable container. A product returned
without proof of the purchase date is not eligible for warranty service.
Step 5. Write the RMA number visibly on the outside of the package and ship it
prepaid to your dealer.
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Contents
Chapter 1 Overview ...........................................................2
1.1 Introduction....................................................................... 2
1.2 Hardware Specifications ................................................... 3
1.3 Safety Precautions............................................................. 4
1.4 Chassis Dimensions........................................................... 5
Figure 1.1:Chassis Dimensions....................................... 5
Chapter 2 Hardware Functionality ..................................8
2.1 Introduction....................................................................... 8
Figure 2.1:Front panel of UNO-2170 ............................. 8
Figure 2.2:Rear panel of UNO-2170 .............................. 8
2.2 RS-232 Interface (COM1~COM2) ................................... 8
2.3 RS-232/422/485 Interface (COM3~COM4) ..................... 9
2.3.1 16C550 UARTs with 16-byte standard .......................... 9
2.3.2 RS-422/485 detection ..................................................... 9
2.3.3 Automatic Data Flow Control Function for RS-485 ...... 9
2.3.4 Termination Resistor (JP6)............................................. 9
2.3.5 RS-232/422/485 Selection ............................................ 10
Figure 2.3:RS-422/485 jumper setting.......................... 10
Figure 2.4:RS-232 jumper setting................................. 10
2.3.6 RS-485 Auto Flow Control Mode and RS-422 Master/
Slave Mode Selection ...................................................... 11
Table 2.1:Auto Flow Control and RS-422 Slave/Master
Selection ........................................................... 11
2.3.7 IRQ and Address Setting .............................................. 12
Table 2.2:IRQ Setting via switch 1 at SW2.................. 12
Table 2.3:IRQ Setting via switch 1 at SW2.................. 12
2.4 LAN: Ethernet Connector .............................................. 13
2.5 Power Connector............................................................. 13
2.6 PS/2 Keyboard and Mouse Connector ............................ 13
2.7 USB Connector ............................................................... 13
2.8 PCMCIA: PC Card Slot .................................................. 14
2.9 VGA Display Connector ................................................. 14
2.10 Battery Backup SRAM.................................................... 15
2.10.1 Lithium Battery Specification....................................... 15
Figure 2.5:The location of the lith. battery for SRAM. 15
2.11 Reset Button.................................................................... 15
Chapter 3 Initial Setup.....................................................18
3.1 Inserting a CompactFlash™ Card................................... 18
3.2 Chassis Grounding .......................................................... 18
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Figure 3.1:Chassis Grounding Connection................... 18
3.3 Connecting Power ........................................................... 19
3.4 Installing a Hard Disk ..................................................... 19
3.5 BIOS Setup and System Assignments ............................ 19
Appendix A System Settings and Pin Assignments ..........22
A.1 System I/O Address and Interrupt Assignment............ 22
Table A.1: UNO-2170 System I/O Ports...................... 22
A.2 Board Connectors and Jumpers....................................... 24
Figure A.1:UNO-2170 conn. and jp. locations (fs) ...... 24
Figure A.2:UNO-2170 conn. and jp. locations (bs)...... 24
A.3 RS-232 Standard Serial Port (COM1~COM2) ............... 26
A.4 RS-232/422/485 Serial Port (COM3~COM4) ................ 27
A.5 Ethernet RJ-45 Connector (LAN1~LAN2)..................... 27
A.6 Phoenix Power Connector (PWR)................................... 28
A.7 PS/2 Keyboard and Mouse Connector ............................ 28
A.8 USB Connector (USB1~USB2)...................................... 29
A.9 VGA Display Connector................................................. 29
Appendix B Programming the Watchdog Timer .............32
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1
2
Overview
This chapter provides an overview of
UNO-2170s specifications.
Sections include:
•
•
•
•
Introduction
Hardware specification
Safety precautions
Chassis dimensions
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Chapter 1 Overview
1.1 Introduction
UNO-2170 is an embedded Application Ready Platform (ARP) that can
shorten your development time and offers rich networking interfaces to
fulfill extensive needs in different projects. Advantech Universal Net-
work Controller is designed to be a total solution for network enabled
Application Ready Platforms.
Leveraging field-approved and worldwide approved real-time OS
technology, Advantech UNO-2000 series provides a Windows CE .NET
and Windows XP Embedded ready solution, and supports several
standard networking interfaces, such as Ethernet, Wireless LAN, RS-232/
422/485 and so on. Because of its openness, great expansion capability and
reliable design (fanless and diskless), the UNO-2000 series are ideal
embedded platforms for implementing custom applications for diversified
applications.
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1.2 Hardware Specifications
CPU: Up to Celeron-M 1GHz Ultra low-voltage version
Memory: 256/512 MB DDR on board (Default: 256 MB DDR).
Battery-backup RAM: 512 KB Battery-backup RAM
VGA/Keyboard/Mouse: DB-15 VGA Connector, PS/2 keyboard and
mouse
Serial Ports: 2 x RS-232 and 2 x RS-232/422/485 with DB-9 connectors.
Automatic RS-485 data flow control
Serial Speeds: RS-232: 50~115.2 kbps, RS-422/485: 50~921.6 kbps
LAN: Two 10/100 Base-T RJ-45 Ports
USB interface: Two USB ports, USB UHCI, Rev. 1.1 compliant
Printer port: One printer port
PC Card: One PC Card slot. Supports CardBus (Card-32) Card and
16-bit (PCMCIA 2.1/JEIDA4.2) Card.
Supports +5 V, +3. 3 V and +12 V @ 120 mA working power
SSD: One internal Type I / Type II CompactFlash card slot
LEDs: Power, IDE, Alarm for RAM Backup Battery
PC/104: Two PC/104 Extension. (Optional)
HDD: HDD extension kit for installation of one standard 2.5" HDD
Anti-Shock: 20 G @ Wall mounting, IEC 68 2-27, half sine, 11 ms w/
HDD50 G @ Wall mounting, IEC 68 2-27, half sine, 11 ms w/CF
Anti-Vibration: 2 Grms w/CF @IEC 68 section 2-64, random, 5 ~ 500
Hz, 1 Oct./min, 1 hr/axis.0.5 Grms w/ HDD @ IEC 68 section 2-64,
random, 5 ~ 500 Hz, 1 Oct./min, 1 hr/axis
Power supply: 9 ~ 36 VDC
Power consumption: Max. 35 W
Operating temperature: -10~50°C (14~122°F)@ 5~85% relative
humidity.
Relative humidity: 95% @ 40°C
Weight: 1.6 kg
Chassis size (W
×
L
×
H): 255
×
152
×
50 mm (10″×6.0″×2.0″)
Software options: Windows XP Embedded, Windows 2000/XP, Windows
CE .NET V5.0
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1.3 Safety Precautions
The following sections tell how to make each connection. In most cases,
you will simply need to connect a standard cable.
Warning! Always disconnect the power cord from your chassis
whenever you are working on it. Do not connect while
the power is on. A sudden rush of power can damage
sensitive electronic components. Only experienced
electronics personnel should open the chassis.
Caution!
Always ground yourself to remove any static electric
charge before touching UNO-2170. Modern electronic
devices are very sensitive to static electric charges. Use
a grounding wrist strap at all times. Place all electronic
components on a static-dissipative surface or in a
static-shielded bag.
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1.4 Chassis Dimensions
Figure 1.1: Chassis Dimensions
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2
2
Hardware Functionality
This chapter shows how to setup the
UNO-2170s hardware functions, including
connecting peripherals, setting switches and
indicators.
Sections include:
•
•
•
•
•
•
•
•
•
•
•
Peripherals
RS-232 Interface
RS-232/422/485 Interface
LAN / Ethernet Connector
Power Connector
PS/2 Mouse and Keyboard Connector
USB Connector
PCMCIA: PC Card Slot
VGA Display Connector
Battery Backup SRAM
Reset Button
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Chapter 2 Hardware Functionality
2.1 Introduction
The following two figures show the connectors on UNO-2170. The
following sections give you detailed information about function of each
peripheral.
Figure 2.1: Front panel of UNO-2170
Figure 2.2: Rear panel of UNO-2170
2.2 RS-232 Interface (COM1~COM2)
The UNO-2170 offers two standard RS-232 serial communication inter-
face ports: COM1 and COM2. Please refer to A.3 for their pin assignments.
IRQ and Address Setting
The IRQ and I/O address range of COM1 and COM2 are listed below:
COM1: 3F8H, IRQ4
COM2: 2F8H, IRQ3
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2.3 RS-232/422/485 Interface (COM3~COM4)
The UNO-2170 offers two RS-232/422/485 serial communication
interface ports: COM3 and COM4. Please refer to Appendix A.4 for their
pin assignments. The default setting of COM3 and COM4 are RS-422/485.
2.3.1 16C550 UARTs with 16-byte standard
Advantech UNO-2170 comes with TI16C550 UARTs containing 16
bytes FIFOs.
2.3.2 RS-422/485 detection
In RS-422/485 mode, UNO-2170 automatically detects signals to match
RS-422 or RS-485 networks. (No jumper change required)
2.3.3 Automatic Data Flow Control Function for RS-485
In RS-485 mode, UNO-2170 automatically detects the direction of
incoming data and switches its transmission direction accordingly. So no
handshaking signal (e.g. RTS signal) is necessary. This lets you
conveniently build an RS-485 network with just two wires. More
importantly, application software previously written for half duplex
RS-232 environments can be maintained without modification.
2.3.4 Termination Resistor (JP6)
The onboard termination resistor (120 ohm) for COM3/COM4 can be
used for long distance transmission or device matching. (Default Open.)
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2.3.5 RS-232/422/485 Selection
COM3 and COM4 support 9-wire RS-232, RS-422 and RS-485 inter faces.
The system detects RS-422 or RS-485 signals automatically in RS-
422/485 mode.
To select between RS-422/485 and RS-232 for COM3, adjust JP4.
To select between RS-422/485 and RS-232 for COM4, adjust JP5.
Jumper setting for RS-422/485 interface: (Default setting). (JP4 and JP5)
Figure 2.3: RS-422/485 jumper setting
Jumper setting for RS-232 interface: (JP4 and JP5)
Figure 2.4: RS-232 jumper setting
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2.3.6 RS-485 Auto Flow Control Mode and RS-422 Master/Slave
Mode Selection
You can set the “Auto Flow Control mode of RS-485 or “Master/Slave
of RS-422 by using the SW3 DIP switch for each RS-422/485 port. In RS-485,
if the switch is set to “Auto the driver automatically senses the direction of
＂
mode
＂
the data flow and switches the direction of transmission. No handshaking is
necessary.
In RS-422, if DIP switch is set to “On
＂
, the driver is always enabled, and
always in high or low status.
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2.3.7 IRQ and Address Setting
The IRQ and I/O address range of COM3 and COM4 are listed below:
COM3: 3E8H, IRQ10 (Independent IRQ), IRQ10 (Share IRQ)
COM4: 2E8H, IRQ5 (Independent IRQ), IRQ10 (Share IRQ)
Vector address for share IRQ: 1D0H
You can set “Share IRQ
SW4.
＂
or “Independent IRQ
＂
by the first switch of
Table 2.2: IRQ Setting via switch 1 at SW4
Switch 1 at SW4 setting Function
Shared IRQ (Default)
Independent IRQ
You can adjust the transmission rate by the second switch of SW2.
Table 2.3: Speed Setting via switch 2 at SW4
Switch 2 at SW4 setting
Function
Speed X 8*
Speed X 1 (Default)
* To increase the normal baud rates by eight times, (e.g. if 115.2K bps is set,
the baud rate will be increased to 921.6K bps), set switch 2 of SW2 to
“on＂
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2.4 LAN: Ethernet Connector
The UNO-2170 is equipped with a Realtek RTL8139C Ethernet LAN
controller that is fully compliant with IEEE 802.3u 10/100Base-T
CSMA/CD standards. The Ethernet port provides a standard RJ-45 jack
on board, and LED indicators on the front side to show its Link (Green
LED) and Active (Yellow LED) status.
2.5 Power Connector
The UNO-2170 comes with a Phoenix connector that carries 9~36 VDC
external power input, and features reversed wiring protection. Therefore, it
will not cause any damage to the system by reversed wiring of ground line
and power line. Please refer to Appendix A.6
2.6 PS/2 Keyboard and Mouse Connector
The UNO-2170 provides a PS/2 keyboard and PS/2 mouse connector. A
6-pin mini-DIN connector is located on the rear panel of the UNO-2170.
The UNO-2170 comes with an adapter to convert from the 6-pin mini- DIN
connector to two 6-pin mini-DIN connectors for PS/2 keyboard and PS/2
mouse connection. Please refer to Appendix A.7 for its pin assignments.
2.7 USB Connector
The USB connector is used for connecting any device that conforms to the
USB interface. Many recent digital devices conform to this standard. The
USB interface supports Plug and Play, which enables you to connect or
disconnect a device whenever you want, without turning off the computer.
The UNO-2170 provides two connectors of USB interfaces, which gives
complete Plug & Play and hot swapping for up to 127 external devices.
The USB interface complies with USB UHCI, Rev. 2.0 compliant. The
USB interface can be disabled in the system BIOS setup. Please refer to
Appendix A.8 for its pin assignments.
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2.8 PCMCIA: PC Card Slot
The UNO-2170 provides one PC Card slot that supports CardBus (Card-
32) cards and 16-bit (PCMCIA 2.1/JEIDA 4.2) card standards. It supports
+3.3 V, +5 V and +12 V @ 120 mA working voltage. The PC Card is
85.6 mm long by 54 mm wide (3.37" x 2.126"), use a 68-pin connector
and a removable module standardized by PCMCIA that is known as
“PCMCIA card
＂.
PS: PCMCIA interrupt assignment is IRQ 9.
2.9 VGA Display Connector
The UNO-2170 provides a VGA controller (Intel 855/852 GME, supports a
single 1.5V accelerated graphics port interface) for a high resolution VGA
interface. It supports CRT Mode: 1280 x 1024 @ 32bpp (60Hz), 1024 x 768
@ 32bpp (85Hz); LCD/Simultaneous Modes: 1280 x 1024 @ 16bpp(60Hz),
1024 x 768 @16bpp(60Hz) and up to 32 MB shared memory.
The VGA interface is reserved for system testing and debugging. The
UNO-2170's JP8 is a 6-pin mini connector and CN7 is a 15-pin connector for
a VGA monitor. A VGA cable is attached to convert from a 6-pin mini
connector to standard VGA connector. You can choose one of the VGA
interfaces for system testing and debugging. Pin assignments for the VGA
display are detailed in Appendix A.9.
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2.10 Battery Backup SRAM
UNO-2170 provides 512 KB of battery backed SRAM. This ensures that
you have a safe place to store critical data. You can now write software
applications without being concerned that system crashes will erase criti-
cal data from the memory.
There is a BTRY LED in the front panel of the UNO-2170, please replace
the lithium battery with a new one if the BTRY LED is activated.
2.10.1 Lithium Battery Specification
Type: BR2032 (Using CR2032 is NOT recommended)
Output voltage: 3 VDC
Location: the backside of UNO-2170 board.
Figure 2.5: The location of the lithium battery for SRAM
2.11 Reset Button
Press the "Reset" button to activate the reset function. (SW1)
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3
2
Initial Setup
This chapter introduces how to initialize the
UNO-2170.
Sections include:
•
•
•
•
•
•
Introduction
Inserting a CompactFlash™ Card
Chassis Grounding
Connecting Power
Connecting a Hard Disk
BIOS Setup and System Assignments
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Chapter 3 Initial Setup
3.1 Inserting a CompactFlash Card
The procedure for installing a CompactFlash™ card into the UNO-2170
is detailed below, please follow these steps carefully.
1. Remove the power cord.
2. Unscrew the four screws from the rear panel of the UNO-2170.
3. Remove the rear panel.
4. Plug a CompactFlash™ card with your OS and application program
into a CompactFlash™ card slot on board.
5. Screw back the rear panel with four screws.
Note The CompactFlash™ slot is allocated as
“Secondary IDE Master＂
3.2 Chassis Grounding
The aluminum made UNO-2170 provides good EMI protection and a stable
grounding base. There is an easy-to-connect chassis grounding point for
you to use.
Please connect chassis ground of UNO-2170 with "EARTH" as ground.
Figure 3.1: Chassis Grounding Connection
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You can select if you wish to combine the chassis grounding point with
the system grounding by using an onboard jumper selection. (JP7)
Open - Separates system power ground and chassis
ground. (default)
Closed - Connects system power ground and chassis
ground.
3.3 Connecting Power
Connect the UNO-2170 to a 9~36 VDC power source. The power source
can either be from a power adapter or an in-house power source.
3.4 Installing a Hard Disk
The procedure for installing a hard disk into the UNO-2170 is below.
Please follow these steps carefully.
1. Remove the power cord.
2. Unscrew four screws from the rear panel of the UNO-2170.
3. Remove the rear panel.
4. Connect the IDE flat cable to Primary (recommended; CN8) or
secondary IDE connector (CN9), then connect the other side of the
connector to the hard disk.
5. Screw back the rear panel with the four screws.
3.5 BIOS Setup and System Assignments
UNO-2170 adopts Advantech SOM-4481 or SOM-4486 CPU module.
Further information about the SOM-4481/4486 CPU module, can be
found in SOM-4481/4486 users manual. You can find this manual on the
UNO-2170s driver and utility CD-ROM.
Please note that you can try to “LOAD BIOS DEFAULTS
＂
from the
BIOS Setup manual if the UNO-2170 does not work properly.
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A
System Settings and
Pin Assignments
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Appendix A System Settings and Pin
Assignments
A.1SystemI/OAddressandInterruptAssignment
Table A.1: UNO-2170 System I/O Ports
Address Range Device
000-01F
020-03F
040-05F
060-06F
070-07F
080-09F
0A0-0BF
0C0-0DF
0F0
DMA controller (slave)
Interrupt controller 1, (master)
8254 timer/counter
8042 (keyboard controller)
Real-time clock, non-mask interrupt (NMI)
DMA page register,
Interrupt controller 2 (slave)
DMA controller (master)
Clear math co-processor
Reset math co-processor
Math co-processor
0F1
0F8-0FF
1D0
Vector address; for COM port share IRQ
Battery backup resource
Battery backup resource
1st fixed disk
1E0
11E
1F0-1F8
200-207
278-27F
2E8-2EF
2F8-2FF
300-31F
360-36F
378-37F
380-38F
3A0-3AF
3B0-3BF
3C0-3CF
Game I/O
Reserved
Serial port 4
Serial port 2
Ethernet**
LPT2
Parallel printer port 1 (LPT1)
SDLC, bisynchronous 2
Bisynchronous 1
Monochrome display
Reserved
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Table A.1: UNO-2170 System I/O Ports
Address Range Device
3D0-3DF
3F0-3F7
3E8-3EF
3F8-3FF
443
Color/graphics monitor adapter
Diskette controller
Serial port 3
Serial port 1
Watchdog timer
DC000-DFFFF
Battery backup resource
Table A.2: UNO-2170 Interrupt Assignment
Interrupt No. Interrupt Source
NMI
Parity error detected
Interval timer
IRQ 0
IRQ 1
IRQ 2
IRQ 3
Keyboard
Interrupt from controller 2 (cascade)
COM2
IRQ 4
IRQ 5
IRQ 6
IRQ 7
IRQ 8
COM1
COM4 (Independent IRQ)
Diskette controller (FDC)
Parallel port 1 (print port)
Real-time clock
IRQ 9
PCMCIA
IRQ 10
IRQ 11
COM3 (Independent IRQ)/COM3&COM4 Share IRQ
Reserved for watchdog timer
IRQ 12
IRQ 13
IRQ 14
IRQ 15
PS/2 mouse
INT from co-processor
Primary IDE
Secondary IDE for CompactFlash™
23
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A.2 Board Connectors and Jumpers
There are several connectors and jumpers on the UNO-2170
board. The following sections tell you how to configure the
UNO-2170 hardware setting. Figure A-1 and Figure A-2 show
the locations of UNO-2170’s connectors and jumpers.
Figure A.1: UNO-2170 connector and jumper locations (front-side)
Figure A.2: UNO-2170 connector and jumper locations (back-side)
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Table A.3: UNO-2170 Connectors and Jumpers
Label
Function
CN1
CN2
CN5
CN3
CN4
CN14
CN15
CN6
Phoenix power connector
Ethernet port 1
Ethernet port 2
COM1 RS-232 serial port
COM2 RS-232 serial port
COM3 RS-232/422/485 serial port
COM4 RS-232/422/485 serial port
USB connector
CN7
CN8
CN9
CN16
PS/2 keyboard and mouse connector
Primary IDE connector
Secondary IDE connector
PC/104 slot
CN12
CN11
CN13
JP4
Printer port
VGA DB15 display connector
PC card slot
COM3 RS-232/422/485 selection
COM4 RS-232/422/485 selection
JP5
JP6
Terminator resistor (120 ohm) for COM3/COM4 (RS-422/
485)
JP7
System grounding jumper
SW1
SW3
SW4
Reset button
COM3/COM4 RS-422 master/slave selection
Share IRQ/Independent IRQ selection /Speed selection
25
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A.3 RS-232 Standard Serial Port (COM1~COM2)
Table A.4: RS-232 standard serial port pin assignments
Pin
RS-232 Signal Name
1
2
3
4
5
6
7
8
9
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
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A.4 RS-232/422/485 Serial Port (COM3~COM4)
Table A.5: RS-232/422/485 serial port pin assignments
Pin
RS-232
RS-422
RS-485
1
2
3
4
5
6
7
8
9
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
Tx-
Tx+
Rx+
Rx-
GND
NC
DATA-
DATA+
NC
NC
GND
NC
NC
NC
NC
NC
NC
NC
A.5 Ethernet RJ-45 Connector (LAN1~LAN2)
Table A.6: Table A-5: Ethernet RJ-45 connector pin assignments
Pin
10/100Base-T Signal Name
1
2
3
4
5
6
7
8
XMT+
XMT-
RCV+
NC
NC
RCV-
NC
NC
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A.6 Phoenix Power Connector (PWR)
Table A.7: Power connector pin assignments
Pin
10/100Base-T Signal Name
1
2
+9~36VDC
GND
A.7 PS/2 Keyboard and Mouse Connector
Table A.8: Keyboard and Mouse connector pin assignments
Pin
Signal Name
1
2
3
4
5
6
KB DATA
MS DATA
GND
VCC
KB Clock
MS Clock
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A.8 USB Connector (USB1~USB2)
Table A.9: USB connector pin assignments
Pin
Signal Name
Cable Color
1
2
3
4
VCC
Red
DATA+
DATA-
GND
White
Green
Black
A.9 VGA Display Connector
Table A.10: Table A-9: VGA adaptor cable pin assignment
Pin
Signal Name
1
Red
2
Green
Blue
3
4
NC
5
GND
GND
GND
GND
NC
6
7
8
9
10
11
12
13
14
15
GND
NC
NC
H-SYNC
V-SYNC
NC
29
AppendixA
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B
Programming the
Watchdog Timer
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Appendix B Programming the Watchdog Timer
Bellow is a sample of programming code for controlling the Watchdog
Timer function.
-----------------------------------------------------------------------------------
Enter the extended function mode, interruptible double-write |
-----------------------------------------------------------------------------------
MOV DX,2EH
MOV AL,87H
OUT DX,AL
OUT DX,AL
-----------------------------------------------------------------------------
Configured logical device 8, configuration register CRF6 |
-----------------------------------------------------------------------------
MOV DX,2EH
MOV AL,2BH
OUT DX,AL
MOV DX,2FH
IN AL,DX
AND AL.OEFH;Setbit 4=0 Pin 89=WDTO
OUT DX,AL
MOV DX,2EH
MOV AL,07H; point to Logical Device Number Reg.
OUT DX,AL
MOV DX,2FH
MOV AL,08H; select logical device 8
OUT DX,AL;
MOV DX,2EH
MOV AL,30H;Set watch dog activate or inactivate
OUT DX,AL
MOV DX,2FH
MOV AL,01H; 01:activate 00:inactivate
OUT DX,AL;
MOV DX,2EH
MOV AL,F5H; Setting counter unit is second
OUT DX,AL
MOV DX,2FH
MOV AL,00H
OUT DX,AL;
MOV DX,2EH
MOV AL,F6H
OUT DX,AL
MOV DX,2FH
MOV AL,05H; Set 5 seconds
OUT DX,AL
;------------------------------------------
; Exit extended function mode |
;------------------------------------------
MOV DX,2EH
MOV AL,AAH
OUT DX,AL
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33
AppendixB
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