This manual covers the following B&B Electronics’ model serial cards: Four Port, Any Address, Any IRQ RS-232/422/485 Serial Card CE Model 3PXCC4A Documentation Number 3PXCC4A3001 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.
Table of Contents Chapter 1: Introduction and General Information ...........1 Features .................................................................................1 Specifications .........................................................................2 Chapter 2: Quick Installation Guide ..................................3 Chapter 3: Windows Installation .......................................5 Checking Device Manager for Available Address/IRQ’s (Windows 95/98) ......................................
Chapter 1: Introduction and General Information The B&B Electronics’ 3PXCC4A series 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 RJ45 style connectors. The 3PXCC4A cards offer exceptional setup flexibility. The 3PXCC4A 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.
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: 7.1 x 4.3 in (18 x 10.9cm) I/O connection: RJ45 (8 conductor) connectors for all four ports Character length: 5, 6, 7, or 8 bits Parity: Even, odd or none Stop bits: 1, 1.5, or 2 RS-232 Drivers: Device: 75185 Transceiver High level output voltage: 6.0 V minimum Low level output voltage: -6.
Chapter 2: Quick Installation Guide The following steps will help you install the Model 3PXCC4A Serial Card. Please follow (step-by-step) the following 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.
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.
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. Manual Document# 3PXCC4A3001 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.
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 Manual Document# 3PXCC4A3001 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.
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.
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 Manual Document# 3PXCC4A3001 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.
Click Next. Select Yes/No for the device in the list. Click Next. Manual Document# 3PXCC4A3001 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.
Select No (you do not want Windows to search for your new hardware). Click Next. Select Ports (COM & LPT). Click Next. 10 Manual Document# 3PXCC4A3001 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.
Select (Standard port types) and Communication Port. Click Next. Manual Document# 3PXCC4A3001 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.
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 Manual Document# 3PXCC4A3001 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.
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). Double-click on the new port that has been added. Manual Document# 3PXCC4A3001 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.
Click Resources. Click off (check mark out of box) Use Automatic Settings. 14 Manual Document# 3PXCC4A3001 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.
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.
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. 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 may have to start at COM3 or COM4 to start your addressing of the ISA card you have.
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.
Checking Windows 2000 for Available Address/IRQ’s Click on Start / Settings / Control Panel. Double-click on System. Manual Document# 3PXCC4A3001 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.
Click on Hardware. 20 Manual Document# 3PXCC4A3001 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.
Click on Device Manager. Manual Document# 3PXCC4A3001 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.
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, 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 may have to start at COM3 or COM4 to start your addressing of the ISA card you have.
Double-click on Interrupt Request (IRQ). Here you will need to find an unused IRQ to set your B&B Electronics serial card to. Manual Document# 3PXCC4A3001 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.
Adding Serial Port(s) in Windows 2000 Go to Start Menu / Settings / Control Panel. Double-click on Add/Remove Hardware. 24 Manual Document# 3PXCC4A3001 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.
Click Next. Click on Add/Troubleshoot a device. Click Next. Manual Document# 3PXCC4A3001 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.
The following screen will appear after a few seconds. Click Add a new device. Click Next 26 Manual Document# 3PXCC4A3001 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.
Click No, I want to select the hardware from a list. Click Ports (COM & LPT). Click Next. Select Standard port types and Communication Ports and Click Next. You will see the following screen, go ahead and Click OK. Manual Document# 3PXCC4A3001 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.
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. Double-click on the Input/Output Range to set the Address. 28 Manual Document# 3PXCC4A3001 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.
Double-click on the Interrupt Request to set the IRQ. Select IRQ and Address that you want your port(s) configured at. Manual Document# 3PXCC4A3001 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.
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 Manual Document# 3PXCC4A3001 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.
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.
Figure 1. Silk Screen Plot of 3PXCC4A PCB 32 Manual Document# 3PXCC4A3001 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.
When setting the address (via the dipswitch) use the silkscreen on the printed circuit board. This silkscreen shows a “1” and a “0” to refer 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.
Table 3.
Shared IRQ Mode The 3PXCC4A card has the ability to share interrupts among its ports. Shared IRQ mode should only be used if your software supports this feature. If you are writing your own software, B&B Electronics’ SimpCom V1.04 and later serial communications library supports this feature. When sharing ports, use JP5 to set each of the ports to be used in shared mode to the SHARE position. JP6 must also be set to the SHARE position. Each of the ports set to SHARE will use the Port A IRQ.
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. RS-232 Mode To configure Port A for RS-232 mode, 5 jumpers must be checked. The following settings will configure PORT A as RS-232. 1. The four jumpers of JP7 - must be set to the "232" (upper) position. 2.
RS-485 Mode To configure Port A for RS-485 mode, 7 jumpers must be checked. The following settings configure PORT 1 as RS-485. 1. The four jumpers of JP7 must be set to the "422" (lower) position. 2. The top two jumpers of JP8 should be set to the 485 (left) position. The third jumper of JP8 should be set to the 422/485 (right) position. The bottom jumper of JP8 switches the 120 Ω receiver termination resistor in or out. Typically this resistor should not be used.
RS-422 and RS-485 Termination A 120Ω termination resistor has been provided for the RS422/485 receivers. To enable the termination provided, the termination jumper should be placed in the Rt IN position (left). If you do not need to use termination, place the jumper in the Rt OUT position (right). Termination should only be used when very long cable runs are used with high baud rates. For example, with most cables which are 4000 feet or shorter and have baud rates at 19.
Chapter 6: Physical Hook-up and Troubleshooting This chapter will cover 3PXCC4A pinout, communication cable data, and troubleshooting information. Pinouts RS-232 Pinouts The 3PXCC4A Serial Cards are wired using RJ45 type connectors for each port. The following table shows the pinout for the RS-232 connections. RJ45 Pin RS-232 Signal Direction Std. DB9 Pinout Std.
RS-422 Pinouts RS-422 mode supports transmit and receive data signals. The pinouts of the RJ45 connector are given in Table 6. Figure 5 shows how to connect a typical RS-422/RS-485 full duplex communication link. RJ45 Pin RS-422 signal Direction MDB9 Pinout MDB25 Pinout 1 TD(B) output 7 4 2 TD(A) output 3 2 3 RD(B) input 8 5 4 RD(A) input 2 3 5 NA NA 4 20 6 NA NA 6 6 7 NA NA 1 8 8 GND ---- 5 7 Table 6.
3PXCC4A Serial Card RS-422 Four Wire Device TD(B+) Pin 1 RD(+) TD(A-) Pin 2 RD(-) RD(B+) Pin 3 TD(+) RD(A-) Pin 4 TD(-) GND Pin 8 GND Figure 5. RS-422/RS-485 (Four Wire) Pinout Description 3PXCC4A Serial Card RS-485 Two Wire Device TD(A-) Pin 2 DATA (-) TD(B+) Pin 1 DATA (+) RD(A-) Pin 4 RD(B+) Pin 3 GND Pin 8 GND Figure 6. RS-485 (Two Wire) Pinout Description Communication Cable Data The 3PXCC4A Serial Card communicates using RS-232, RS-422, and RS-485 communications.
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.
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
I/O Map of AT Class Machines Hex Address Address Function in AT Class Machines DMA controller #1 (8237A-5) 000-01F interrupt controller #1 (8259A) 020-03F timer (8254) 040-05F keyboard (8042) 060-06F NMI - non maskable interrupt & CMOS RAM 070-07F DMA page register (74LS612) 080-09F interrupt controller #2 (8259A) 0A0-0BF DMA controller #2 (8237A) 0C0-0DF 80287 math coprocessor 0F0-0FF hard disk 1F0-1F8 game port joystick controller 200-20F Intel Above Board 258-25F parallel printer port 2 278-27F COM4 seri
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 Model Numbers: 3PXCC4A1A, 3PXCC4A1B, 3PXCC4A2A, 3PXCC4A2B Description: RS-232 Serial Card Type: Light industrial ITE equipment Application of Council Directive: 89/336/EEC Standards: EN 50082-1:1992 IEC 801 (-2, -3, -4) EN 61000 (-4-2, -4-3, -4-4, -4-6) EN 50082-1:1998 Michael J.