B&B Electronics 3PXCC2a, 3PXCC1A, 3PXCC1b, 3PXCC2b User Manual

This manual covers the following B&B Electronics' model serial
cards:

RS-232/422/485 Serial Cards CE

3PXCC1a 3PXCC1b
3PXCC2a 3PXCC2b

Documentation Number 3PXCC1x-2x-3903

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

707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350 USA

Phone [phone] -- General Fax [phone]

Sales e-mail: [e-mail]

Technical Support e-mail: [e-mail]

B&B Electronics Mfg. Co. Inc.

Home Page: www.bb-elec.com

-- Fax [phone]

-- Fax [phone]

European Headquarters

B&B Electronics Ltd.

Westlink Commercial Park, Oranmore, Co. Galway, Ireland

Phone [phone] -- Fax [phone]

Home Page: www.bb-europe.com

Sales e-mail: [e-mail]

Technical Support e-mail: [e-mail]

 B&B Electronics -- Revised October 2003

Documentation No. 3PXCC1x-2x-3903 Cover Page

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

Table of Contents

Chapter 1: Introduction and General Information........... 1

Features ................................................................................ 1

Specifications ........................................................................ 1

Chapter 2: Quick Installation Guide ................................. 3

Chapter 3: Windows Installation ...................................... 5

Checking Device Manager for Available Address/IRQ’s

(Windows 95/98) ................................................................... 5

Adding Serial Port(s) in Windows 95/98 ......................... 8

Changing COM Port Resources in Windows 95/98 ..... 12

Checking Windows NT Diagnostics for Available

Address/IRQ’s (Windows NT 4.0) ....................................... 15

Checking Windows 2000 for Available Address/IRQ’s ....... 18

Adding Serial Port(s) in Windows 2000 ........................ 22

Chapter 4: Address and IRQ Setting..............................29

Address Switch Setup ......................................................... 29

Interrupt Jumper Setup........................................................ 32

Chapter 5: Communication Jumper Settings................ 35

RS-232 Mode ...................................................................... 35

RS-422 Mode ...................................................................... 36

RS-485 Mode ...................................................................... 36

RS-485 Pinouts............................................................. 37

RS-485 Operation ......................................................... 37

RS-422 and RS-485 Termination........................................ 38

High Speed Mode................................................................ 38

Chapter 6: Physical Hook-up and Troubleshooting ..... 39

Pinouts................................................................................. 39

RS-232 Pinouts............................................................. 39

RS-422 Pinouts............................................................. 39

RS-485 Pinouts............................................................. 40

Communication Cable Data ................................................ 41

Troubleshooting................................................................... 42

Appendix A: Hardware I/O Map .................................... A-1

Appendix B: Declaration of Conformity Statement .... B-1

Documentation No. 3PXCC1x-2x-3903 Table of Contents i

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

ii Table of Contents Documentation No.3PXCC1x-2x-3903

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

Chapter 1: Introduction and General Information

The B&B Electronics’ 3PXCC 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
9-pin D-style connectors.

The 3PXCC cards offer exceptional setup flexibility. The 3PXCC
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

RS-232 Drivers:
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

RS-422/485 Driver/Receiver:
Device: MAX491 or equivalent
Differential driver output voltage: 1.5 - 6 V
Differential input high-threshold voltage: 0.2 V maximum
Differential input low-threshold voltage: -0.2 V minimum

Automatic RS-485 Driver Control Timing:
Driver is enabled when data is a logic “0” (start bit). Driver
remains enabled for one character transmission time (10 bits
of
data at current baud rate). Each additional logic “0” resets
the timeout.

Power Consumption (2-port model):
+5V, 180mA, 900mW
+12V, 50mA, 600mW

-12V, 65mA, 780mW
Total maximum power draw: 2.28 W

Documentation No.3PXCC1x-2x-3903 1

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

2 Documentation No.3PXCC1x-2x-3903

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

Chapter 2: Quick Installation Guide

The following steps will help you install the Model 3PXCC Serial
Card. Please follow (step-by-step) the following numbered
instructions and refer to any corresponding chapters for more
details.

Before removing the card from the anti-static protective packaging.

• Discharge any static electricity buildup on your body by touching

• Avoid touching the gold connectors or other parts on the card

• Remove AC power from the computer and unplug the power

• Retain the ESD bag for handling the card. Save the packaging

1. Make sure you have an available ISA slot for installing your B&B

2. Determine what addresses and IRQ’s are free to use on your

3. Add New Hardware – This consists of adding a port or ports to

CAUTION: Electrostatic Sensitive Device.
Use ESD precautions for safe handling.

a large grounded metal surface or the metal chassis on

equipment connected to earth ground by a 3-wire power cord.

except as necessary. After setting the jumper, ground yourself

to the computer chassis before and while inserting the card.

cord before inserting the card.

for storage or shipping.

Electronics Serial Card. You may have to remove the cover of

your PC.

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.

your operating system. See “Adding Serial Ports” in Chapter 3

for specific instructions for your operating system.

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.

Documentation No.3PXCC1x-2x-3903 3

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

4 Documentation No.3PXCC1x-2x-3903

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

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.

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.

Documentation No.3PXCC1x-2x-3903 5

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

6 Documentation No.3PXCC1x-2x-3903

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

Left-click on Input/Output (I/O).

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 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.

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.

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B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

8 Documentation No.3PXCC1x-2x-3903

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B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

Click Next.

Select No (you do not want Windows to search for your new
hardware). Click Next.

Select Ports (COM & LPT). Click Next.

Select Yes/No for the device in the list. Click Next.

Documentation No.3PXCC1x-2x-3903 9

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

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B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

Select (Standard port types) and Communication Port. Click Next.

Changing COM Port Resources in Windows 95/98

Click Start / Settings / Control Panel and double-click on System
Properties.

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.

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B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]

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.

12 Documentation No.3PXCC1x-2x-3903

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone]

B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone]