| This manual covers the following B&B Electronics' model serial   cards:   RS-232 Serial Cards CE   232CC1A 232CC1B   232CC2A 232CC2B   Documentation Number 232CCxx4502   Each of these models is an RS-232 serial card and uses the same printed circuit   board. The "1" and "2" suffix designates the number of ports on the card. The model   number of the card is printed on a sticker on the board.   This product designed and manufactured in Ottawa, Illinois USA   of domestic and imported parts by   International Headquarters   B&B Electronics Mfg. Co. Inc.   707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350 USA   Phone (815) 433-5100 -- General Fax (815) 433-5105   European Headquarters   B&B Electronics Ltd.   Westlink Commercial Park, Oranmore, Co. Galway, Ireland   Phone +353 91-792444 -- Fax +353 91-792445   © B&B Electronics -- Revised November 2002   Documentation Number 232CCxx4502   Cover Page   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Chapter 1: Introduction and General Information   The B&B Electronics’ 232CC series RS-232 serial interface   cards are designed for the IBM PC, XT, AT and compatibles. Ports   are configured as a standard DTE device, and connections are   made on 9-pin D-style connectors.   The 232CC cards offer exceptional setup flexibility. The 232CC   series has the ability to use any I/O address and any hardware   interrupt. You can install as many serial ports as will physically fit in   a machine. To use one of the “non-standard” addresses or   interrupts, the serial software used must also offer that flexibility. If   you are writing your own application, be sure the communications   routines used support any address and IRQ. B&B Electronics’   SimpCom Communications Drivers support these features.   Features   Switch selectable addresses, from 0 to hex 3F8, including   COM1 – COM4   Jumper selectable interrupts: 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15   Enhanced 16 bit address decoding   Baud rates up to 230.4K baud with 2X clock option enabled   16550A UARTs on all ports   Supports all standard RS-232 lines: TD, RD, RTS, CTS, DSR, DCD,   DTR, and RI   Specifications   Bus: IBM PC ISA bus   Slot: Requires 1 full length slot for complete IRQ selectability. When   installed in a short slot, IRQ’s 10-15 will not be available.   Dimensions: 6.3 x 3.3 in (16.0 x 8.4cm)   I/O connection: 9-pin male, D-sub connectors   Baud rates: 230,400 baud max with 2x clock jumper enabled   Character length: 5, 6, 7, or 8 bits   Parity: Even, odd or none   Stop bits: 1, 1.5, or 2   Interrupt: IRQ 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, or 15   Address: Switch programmable, 0 to hex 3F8   Documentation Number 232CCxx4502   1 B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   RS-232 Transceiver   TD and RD Device: DS232AS   Transmitter output voltage: 5.0 V minimum   Short circuit current: 30 mA typical   Input low level threshold voltage: 0.8 V minimum   Input high level threshold voltage: 2.4V maximum   Device will withstand 30 V   Handshake Line Device: SN75185   Transmitter output voltage: 10.0 V minimum   Short circuit current: 12 mA typical   Input low level threshold voltage: 0.65 V minimum   Input high level threshold voltage: 2.5V maximum   Device will withstand 30 V   Power Consumption (2-port model)   +5V, 115mA, 575mW   +12V, 50mA, 600mW   -12V, 72mA, 864mW   Total maximum power draw: 2.039 W   2 Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Chapter 2: Quick Installation Guide   The following steps will help you install the Model 232CCXX Serial   Card. Please follow (step-by-step) the numbered instructions and   refer to any corresponding chapters for more details.   CAUTION: Electrostatic Sensitive Device.   Use ESD precautions for safe handling.   Before removing the card from the anti-static protective packaging:   • Discharge any static electricity build-up on your body by   touching a large grounded metal surface or the metal chassis   on equipment connected to earth ground by a 3-wire power   cord.   • Avoid touching the gold connectors or other parts on the card   except as necessary. After setting the jumper, ground yourself   to the computer chassis before and while inserting the card.   • • Remove AC power from the computer and unplug the power   cord before inserting the card.   Retain the ESD bag for handling the card. Save the packaging   for storage or shipping.   1. Make sure you have an available ISA slot for installing your   B&B Electronics Serial Card. You may have to remove the   cover of your PC.   2. Determine what addresses and IRQ’s are free to use on your   PC by checking your operating system for unused addresses   and IRQ’s. Each port uses eight I/O address spaces starting at   the base address that you select. Each port I/O address and   interrupt request (IRQ) must be set as well. See “Checking   Device Manager for Available Address/IRQ’s” in Chapter 3 for   your operating system. Refer to Chapter 4 (Table 3) for   frequently unused I/O addresses and IRQ’s. Write down the   address and IRQ you select to use. Do not physically install the   ISA card at this point.   3. Add New Hardware – This consists of adding a port or ports to   your operating system. See “Adding Serial Ports” in Chapter 3   for specific instructions for your operating system.   Documentation Number 232CCxx4502   3 B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   4. Assign Address and IRQ – The address and IRQ are set in the   operating system that you are using. This is the final step of   adding new hardware. See Chapter 4 for more details.   5. Set up the address (with dipswitches) and IRQ (jumpers) on the   serial card to reflect unused addresses and IRQ’s that you want   to use. The address dipswitch setting consists of configuring   seven dipswitches that reflect a particular hex address. The IRQ   is set via a little black jumper. See Chapter 4 for an explanation   of address and IRQ settings as well as details on configuring   the card itself.   6. Set serial card hardware jumpers for the communication   parameters that you desire. See Chapter 5 for an explanation of   serial parameters and details on how to configure them.   7. Shut down the PC before installing the serial card.   8. Install ISA serial card into an available ISA slot in the PC.   9. Physical Hook-up and Troubleshooting – pinout, cable data, and   troubleshooting information. See Chapter 6 for more details.   4 Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Chapter 3: Windows Installation   Checking Device Manager for Available   Address/IRQ’s (Windows 95/98)   Click on Start / Settings / Control Panel and double-click on System   Properties.   Left-click on Device Manager.   Double-click on Computer.   Documentation Number 232CCxx4502   5 B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Left-click on Interrupt Request.   Find a free IRQ in the displayed list. Any number that is seen on   the left hand side of this screen is an IRQ that is currently being   used. The object is to find a number of IRQ(s) that are not listed   and set your port(s) using those IRQ’s.   Left-click on Input/Output (I/O).   6 Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Scroll through the list, check 03F8H, 02F8H, 03E8H, 02E8H. If   one of these is available, use it. If not, check alternates.   Find a free address in the list. Most desktop PC’s have a COM1   and possibly a COM2 already on their system which will be seen in   the list. You might have to start at COM3 or COM4 to begin   addressing the ISA card. If these addresses are used you may have   to resort to the Frequently Unused Port Addresses (found in   Chapter 4, Table 3) of this manual. Write these open addresses and   IRQ’s down for later reference.   Documentation Number 232CCxx4502   7 B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Adding Serial Port(s) in Windows 95/98   Go to Start Menu / Settings / Control Panel.   Run the Windows Add New Hardware utility found in the control   panel. Click Next.   8 Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Click Next.   Select Yes/No, (for) the device in the list. Click Next.   Documentation Number 232CCxx4502   9 B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Select No (you do not want Windows to search for your new   hardware). Click Next.   Select Ports (COM & LPT). Click Next.   10   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Select (Standard port types) and Communication Port. Click Next.   Documentation Number 232CCxx4502   11   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   The next screen will show the address and interrupt request of   the port. These may not match your configuration. For now, simply   click Next. Windows may ask for the Windows 95/98 disk/CD to be   inserted.   Finally, click Finish.   12   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Changing COM Port Resources in Windows 95/98   Click Start / Settings / Control Panel and double-click on System   Properties.   Click on Device Manager (make sure “View devices by type” is   enabled.   Double-click on Ports (COM & LPT).   Documentation Number 232CCxx4502   13   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Double-click on the new port that has been added.   Click Resources.   14   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Documentation Number 232CCxx4502   Click off (check mark out of box) Use Automatic Settings.   Select Basic Configuration 0007 (or last one).   Select Input / Output Range.   Click Change Setting.   Change Address to match the free address settings you found   earlier.   Click OK.   Select Interrupt Request.   Click Change Settings.   Change IRQ to match the free IRQ settings you found earlier.   At this point you can shut down the system and physically install   your B&B Electronics Serial Card into an available ISA slot. Double   check to make sure the addresses and IRQ’s on the Serial Card are   set to the correct settings.   Documentation Number 232CCxx4502   15   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Checking Windows NT Diagnostics for Available   Address/IRQ’s (Windows NT 4.0)   Click on Start / Programs / Administrative Tools / Windows NT   Diagnostics.   Left-click on Resources.   Find a free IRQ in the following list. Any number that is seen on   the left hand side of this screen is an IRQ that is currently being   used. The object is to find a number of IRQ(s) not listed and set   your port(s) using those IRQ’s.   Left-click on I/O Port in Resources. Tab to view currently used   addresses.   16   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Scroll through the list, checking 03F8H, 02F8H, 03E8H, 02E8H.   If one of these is available, use it. If not, check alternates.   Find a free address in the list. Most desktop PC’s have a COM1   and possibly a COM2 already on their system, which will be seen in   the list. You may have to start at COM3 or COM4 to start your   addressing of the ISA card you have. If these addresses are used   you may have to resort to the Frequently Unused Port Addresses   (found in Chapter 4, Table 3) of this manual. Write these open   addresses and IRQ’s down for later reference.   Documentation Number 232CCxx4502   17   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Adding Serial Port(s) in Windows NT 4.0   Go to Start Menu / Settings / Control Panel.   Double-click on Ports.   Click Add.   Choose COM Port Number, Base I/O Address, and IRQ that   you want to use for the new Serial Port(s) being added.   After clicking OK, you will see a screen – System Setting   Change. Click the button Restart Now to restart Windows NT 4.0.   At this point you can shut down the system and physically install   your B&B Electronics Serial Card into an available ISA Slot. Double   check to make sure the addresses and IRQ’s on the Serial Card are   set to the correct settings.   18   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Checking Windows 2000 for Available Address/IRQ’s   Click on Start / Settings / Control Panel.   Double-click on System.   Documentation Number 232CCxx4502   19   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Click on Hardware.   20   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Click on Device Manager.   Documentation Number 232CCxx4502   21   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Click on View (top of screen).   Click on Resources by type.   Double-click on Input/Output. Find an unused address to set your   B&B Electronics serial card to.   Scroll through the list, checking 03F8H, 02F8H, 03E8H, 02E8H.   If one of these is available, use it. If not, check alternates.   Find a free address in the list. Most desktop PC’s have a COM1   and possibly a COM2 already on their system, which will be seen in   the list. You may have to start at COM3 or COM4 to begin   addressing the ISA card that you have. If these addresses are used   you may have to resort to the Frequently Unused Port Addresses   (found in Chapter 4, Table 3) of this manual. Write these open   addresses and IRQ’s down for later reference.   22   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Double-click on Interrupt Request (IRQ). Here you need to find an   unused IRQ to set your B&B Electronics serial card to.   Documentation Number 232CCxx4502   23   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Adding Serial Port(s) in Windows 2000   Go to Start Menu / Settings / Control Panel.   Double-click on Add/Remove Hardware.   24   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Documentation Number 232CCxx4502   Click Next.   Click on Add/Troubleshoot a device.   Click Next.   The following screen will appear after a few seconds.   Documentation Number 232CCxx4502   25   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Click Add a new device.   Click Next.   Click No, I want to select the hardware from a list.   26   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Documentation Number 232CCxx4502   Click Ports (COM & LPT).   Click Next.   Select Standard port types and Communication Port and Click   Next. You will see the following screen, go ahead and Click OK.   Documentation Number 232CCxx4502   27   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   The Resources area will allow you to set the IRQ and Address   of your new ports.   Click on the down arrow to the middle right of the screen after   “Setting based on”:   Click on the highest Basic configuration number in the list on the   “Setting based on” category.   28   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Double-click on the Input/Output Range to set the Address.   Double-click on the Interrupt Request to set the IRQ.   Select IRQ and Address that you want your port(s) configured at.   Documentation Number 232CCxx4502   29   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   At this point you can shut down the system and physically install   your B&B Electronics Serial Card into an available ISA Slot. Double   check to make sure the addresses and IRQ’s on the Serial Card are   set to the correct settings.   30   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Chapter 4: Address and IRQ Setting   Address Switch Setup   A Windows PC has I/O port addresses and memory addresses.   Some devices use both types of addresses. I/O port addresses   have a 64K address space. Devices may decode all 16 address bits   or only some of the lower bits. Traditionally, serial cards have only   decoded 10 bits of the address bus. Recently this has begun to   cause address conflicts with full 16 bit decoded devices, most   notably between video cards and COM 4. B&B has solved these   conflicts by decoding all 16 bits of the ISA address bus. Address   settings in our ISA bus serial cards is set by DIP switches (selecting   bits 11-4) or jumpers.   CAUTION : Electrostatic Sensitive Device.   Use ESD precautions for safe handling.   B&B Electronics 232CC cards are factory configured for COM1   IRQ4, and COM2 IRQ3 (2-port models). If you plan to install the   232CC as standard COM1 and COM2, you may leave the address   and IRQ set to the factory defaults.   The 232CC cards use a 7-position DIP switch to program the   binary I/O address of each port on the card. Figure 1 is a drawing of   the printed circuit board that shows the locations of the setup   switches and jumpers on the 232CC cards.   Documentation Number 232CCxx4502   31   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Figure 1. Silk Screen Plot of 232CC PCB   32   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   When setting the address (via the dipswitch) use the silkscreen   on the printed circuit board. This silkscreen shows a “1” and a “0” --   referring to the “on and “off” states that each switch is set to. Switch   S1 configures port one (labeled J1) and, on two port cards, switch   S2 configures port two (labeled J2). Least significant bit (LSB) and   most significant bit (MSB) are labeled on the card. Table 1 shows   the numerical weight and electrical connection of each switch   position. Refer to Table 2 for COM Port addresses. Table 3 shows   frequently unused port addresses for applications when COM Port   addresses 1-4 are already used.   Table 1. Address Switches   Switch Position   7 6 5 4 3 2 1 Bus Connection SA9 SA8 SA7 SA6 SA5 SA4 SA3   Decimal Weight   Hex Weight   512 256   200 100   128 64   80 40   32   20   16   10   8 8 To install the 232CC card as COM1, 2, 3, or 4, follow the switch   settings shown in Table 2. To install at another address, follow the   switch settings shown in Table 3.   Table 2. Standard Port Addresses   Base Hex   Address   Binary   Equivalent   Switch Settings   MSB   LSB   7654321   COM1   COM2   COM3   COM4   3F8   2F8   3E8   2E8   1111111000   1011111000   1111101000   1011101000   1111111   1011111   1111101   1011101   Documentation Number 232CCxx4502   33   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Table 3. Frequently Unused Port Addresses   Base   Hex   Address   Binary   Equivalent   Switch   I/O Space   Description   Settings   MSB   LSB   7654321   1000000   1000001   1100000   1100001   1100010   1100011   1110000   1110001   1110100   1110101   200   208   300   308   310   318   380   388   3A0   3A8   1000000000   1000001000   1100000000   1100001000   1100010000   1100011000   1110000000   1110001000   1110100000   1110101000   game port   game port   prototype   prototype   prototype   prototype   SDLC   SDLC   bisync com   bisync com   Interrupt Jumper Setup   The IRQ is a hardware Interrupt Request line in an ISA Bus   expansion slot on a PC or AT compatible computer. The 8 bit PC   ISA slot has 8 interrupts, the 16 bit slot has another 7 since one of   the first 8 is used to link in the remaining 8. The IRQ is used by   devices to request immediate service by the main microprocessor.   When the IRQ line is set, the microprocessor stops whatever it’s   doing, saves status, checks which line was set, then jumps to code   to handle the interrupt. The processor then clears the interrupt and   returns to what it was doing before. IRQ lines are set by the internal   timer, keyboard, hard drive controller, PCI, USB controller, sound   card, serial ports, printer and more.   The 232CC cards allow the use of interrupts (IRQ) 2, 3, 4, 5, 6,   7, 10, 11, 12, 14, and 15. Table 4 shows the standard serial port   IRQ settings. NOTE: If two ports use the same IRQ setting, both   ports cannot use the serial port at once. Only one port at a time may   communicate.   Table 4. Standard IRQ Settings   COM1   COM2   COM3   COM4   IRQ4   IRQ3   IRQ4   IRQ3   34   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Chapter 5: Communication Jumper Settings   This chapter will cover all of the jumper settings to set your B&B   Serial Card for the proper communications that you desire.   CAUTION : Electrostatic Sensitive Device.   Use ESD precautions for safe handling.   High Speed Mode   The 232CC Serial has only two communication jumpers   referring to clock speed. High data rates may be obtained with the   232CC cards by placing JP1 or JP2 in the *2 position. This   multiplies the clock speed supplied to the UARTs by 2 times to   3.684MHz for Ports 1 and 2 respectively, allowing data rates up to   230.4 KBaud. Note that serial software is not aware of the change   in oscillator frequency. For example, with JP5 in the *2 position,   setting the baud rate to 115.2 KBaud in software will result in a   actual baud rate of 230.4 KBaud. It is also important to realize that   simply increasing the baud rate may not increase actual throughput.   Often, due to the computer’s inability to respond to interrupts quickly   enough, there will be large idle spaces between characters.   Increasing the baud rate to this point will reduce allowable cable   length, and increase the potential for data errors.   Documentation Number 232CCxx4502   35   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Chapter 6: Physical Hook-up and Troubleshooting   This chapter will cover 232CC pinout, communication cable   data, and troubleshooting information.   Pinouts   The 232CC Serial Cards are wired as DTE (Data Terminal   Equipment) devices. The 232CC Serial Cards can be connected   directly to DCE (Data Communication Equipment) devices with a   straight through cable. If you need to connect two DTE devices, you   will need a null modem cable or cross-over cable.   Pin   1 2 Name   DCD   RD   Description   Direction   input   input   Data Carrier Detect   Receive Data   Transmit Data   3 TD   output   4 5 6 7 8 9 DTR   Gnd   DSR   RTS   CTS   RI   Data Terminal Ready output   Signal Ground   Data Set Ready   Request to Send   Clear to Send   Ring Indicator   ------   input   output   input   input   Table 5. Pinout Description   Communication Cable Data   The 232CC Serial Card communicates using RS-232   communications only. The communication cable specifications are   24AWG (wire gauge) and 30pF/ft. (capacitance rating). B&B   Electronics can provide this communication cable, Model ETC8195.   36   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Troubleshooting   If you are unable to communicate with the card from your software:   1. Consult your software manual to make sure it supports the   address and interrupt that you have configured.   2. Double check that the address and interrupt are properly set.   3. Try another software package for troubleshooting. Download   SimpTerm (DOS Terminal Emulator) or Comtest (Windows   Terminal Emulator) from B&B Electronics’ web site. SimpTerm   and Comtest are shareware Simple Terminal Emulators which   can be used to vary the setup of any serial card. Both can be   downloaded from the following site location:   4. Troubleshooting with a Loopback Test.   Load Simpterm or Comtest on the test PC. When loading   Simpterm you must set up the port address and IRQ you have set   on the B&B Electronics serial card.   Jumper TD to RD on the DB9 male connector located on the   serial card. You may have to make a “loopback connector” in order   to do this. This is done by jumpering pin 2 and pin 3 of a DB9   female connector and plugging it into the DB9 male port on the   serial card.   To test the RS-232 handshake lines you can also jumper RTS   to CTS and DTR to DSR. When you raise the RTS line you should   see CTS also go high. When you raise the DTR line you should see   DSR also go high.   Send data from the Serial Port (B&B Electronics serial card) and   see if the data is echoed back to the port. When a character is typed   on the keyboard you must see a duplicate character after the first   character to verify that the same character was received. Perform   this test on all ports of your serial card to verify the ports can (or   cannot) transmit and receive data.   5. Call B&B Electronics' Technical Support at the number/s shown   below:   International/USA Office:   (815) 433-5100, 8a.m. - 5:00 p.m. weekdays (Central USA Time).   European Office:   +353 91-792444, 8a.m. – 4:30 p.m. weekdays (UK).   Documentation Number 232CCxx4502   37   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Appendix A: Hardware I/O Map   I/O Map of XT Class Machines   Hex Address   000-00F   020-021   040-043   060-063   080-083   0A0-0AF   200-20F   210-217   2E8-2EF   2F8-2FF   300-31F   320-32F   378-37F   380-38F   3B0-3BF   3D0-3D7   3E8-3EF   3F0-3F7   3F8-3FF   Address Function in XT Class Machines   DMA controller (8237A)   interrupt controller (8259A)   timer (8253)   PPI(8255A)   DMA page register (74LS612)   NMI - non maskable interrupt   game port joystick controller   expansion unit   COM4 serial port   COM2 serial port   prototype card   hard disk   parallel print   SDLC   MDA - monochrome adapter and printer   CGA - color graphics adapter   COM3 serial port   floppy diskette controller   COM1 serial port   Documentation Number 232CCxx4502   Appendix A: Hardware I/O   A-1   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   I/O Map of AT Class Machines   Hex Address   000-01F   020-03F   040-05F   060-06F   070-07F   080-09F   0A0-0BF   0C0-0DF   0F0-0FF   1F0-1F8   200-20F   258-25F   278-27F   2E8-2EF   2F8-2FF   300-31F   378-37F   380-38F   3A0-3AF   3B0-3BF   3BC-3BE   3C0-3CF   3D0-3D7   3E8-3EF   3F0-3F7   3F8-3FF   Address Function in AT Class Machines   DMA controller #1 (8237A-5)   interrupt controller #1 (8259A)   timer (8254)   keyboard (8042)   NMI - non maskable interrupt & CMOS RAM   DMA page register (74LS612)   interrupt controller #2 (8259A)   DMA controller #2 (8237A)   80287 math coprocessor   hard disk   game port joystick controller   Intel Above Board   parallel printer port 2   COM4 serial port   COM2 serial port   prototype card   parallel printer 1   SDLC or bisync com 2   bisync com 1   MDA - monochrome adapter   parallel printer on monochrome adapter   EGA - reserved   CGA - color graphics adapter   COM 3 serial port   floppy diskette controller   COM1 serial port   Any eight-byte space not used by one of the devices listed in   the table and not used by any other equipment in your system may   be used for the serial port.   A-2   Appendix A: Hardware I/O   Documentation Number 232CCxx4502   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   Appendix B: Declaration of Conformity Statement   DECLARATION OF CONFORMITY   Manufacturer’s Name:   B&B Electronics Manufacturing Company   Manufacturer’s Address:   P.O. Box 1040   707 Dayton Road   Ottawa, IL 61350 USA   232CC1A, 232CC1B, 232CC2A, 232CC2B   RS-232 Serial Cards   Model Numbers:   Description:   Type:   Light industrial ITE equipment   89/336/EEC   EN 50082-1   Application of Council Directive:   Standards:   EN 61000 (-4-2, -4-3, -4-4, -4-6)   William H. Franklin III, Director of Engineering   Documentation Number 232CCxx4502   Declaration of Conformity   B-1   B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104   B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445   |