B&B Electronics 3PCIOSD1x User Manual

Optically Isolated Single Port PCI Bus CE

RS-232/422/485 Serial Card

with Send Data Control

MODELS: 3PCIOSD1A 3PCIOSD1B

Documentation Number 3PCIOSD1x3903m (pn4649-r003)

This manual applies to models 3PCIOSD1A and 3PCIOSD1B. The “1” suffix
designates the number of ports on the card. The “A” models are equipped with
16550A UARTs with 16 byte transmit and receive buffers. The “B” models come with
16850 UARTs with 128 byte transmit and receive buffers. The model number of each
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 [phone] -- General Fax [phone]

Home Page: www.bb-elec.com

Orders e-mail: [e-mail]

Technical Support e-mail: [e-mail]

European Headquarters

B&B Electronics Ltd.

Westlink Commercial Park, Oranmore, Co. Galway, Ireland

Phone [phone] -- Fax [phone]

Home Page: www.bb-europe.com

Orders e-mail: [e-mail]

Technical Support e-mail: [e-mail]

 2000 B&B Electronics -- Revised October 2003

-- Fax [phone]

-- Fax [phone]



2000 B&B Electronics . No part of this publication may be reproduced or transmitted in any form or by any
means, electronic or mechanical, including photography, recording, or any information storage and retrieval
system without written consent. Information in this manual is subject to change without notice, and does not
represent a commitment on the part of B&B Electronics.

B&B Electronics shall not be liable for incidental or consequential damages resulting from the furnishing,
performance, or use of this manual.

All brand names used in this manual are the registered trademarks of their respective owners. The use of
trademarks or other designations in this publication is for reference purposes only and does not constitute an
endorsement by the trademark holder.

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TABLE OF CONTENTS

CHAPTER 1: GENERAL INFORMATION.......................................1

NTRODUCTION .......................................................................................1

I

ESCRIPTION ..........................................................................................1

D

EATURES ...............................................................................................1

F

PECIFICATIONS ......................................................................................2

S

CHAPTER 2: SETUP ..........................................................................5

I

NSPECTION .............................................................................................5

RS-232

MODE.........................................................................................7

MODE.........................................................................................8

RS-422

MODE.........................................................................................9

RS-485

NSTALLING THE CARD..........................................................................12

I

CHAPTER 3: WINDOWS INSTALLATION ...................................13

W

INDOWS 95 AND WINDOWS 98...........................................................13

INDOWS 2000 PROFESSIONAL ............................................................21

W

INDOWS NT 4.0 .................................................................................26

W

CHAPTER 4: TROUBLESHOOTING..............................................33

APPENDIX A: 3PCIOSDxx I/O SCHEMATIC........................... A-1

APPENDIX B: RS-232 & RS-422/485 PINOUTS ..........................B-1

APPENDIX C: JUMPER MODE TABLE ..................................... C-1

APPENDIX D: TROUBLESHOOTING WITH COMTEST ......... D-1

APPENDIX E: ISOLATION AND GROUND ................................E-1

APPENDIX F: RENAMING COM PORTS - WIN 95/98/ME .......F-1

APPENDIX G: DECLARATION OF CONFORMITY ................. G-1

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ii Table of Contents Documentation Number 3PCIOSD1x-3903m Manual

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Chapter 1: GENERAL INFORMATION
Introduction

• RS-485 Signal Lines: TD(A), TD(B), RD(A), RD(B) and Signal

Ground. (Data A & Data B lines when wired for 2-wire
operation.)

The B&B Electronics 3PCIOSD1x single port isolated serial interface
card is designed for IBM compatibles with a PCI Bus. The PCI
design is Plug and Play compatible which allows the driver and
Operating System to select the IRQ and addresses used by the
card.

The 3PCIOSD1x cards offer exceptional setup flexibility with a mix
of selectable operating modes. If you are writing your own
applications, be sure the communications routine used supports
Windows communication drivers and a wide range of COM ports.

Description

The isolated single port can be configured for RS-232, RS-422, or
RS-485 data protocols. The RS-485 mode automatic Send Data
Control feature transparently handles the enable and disable
functions of the RS-485 transceiver. Buffered, high spee d UARTs
(16550A or 16850) make it ideal for high speed (modem) and
multitasking applications.

Features

• IBM compatible, PCI Version 2.1 bus

• Supports baud rates to 460.8K baud with 4X clock option

enabled

• Provides 2000 VDC minimum isolation on all lines from the DB­25 male connector to the host computer

• High speed 16 byte FIFO 16550A UARTs (Model 3PCIOSD1A),
128 byte FIFO 16850 UARTs (Model 3PCIOSD1B)

• RS-485 Automatic Send Data Control or RTS control

• 2-wire or 4-wire RS-485 operation (half or full duplex)

• 120Ω Termination Select Jumper for RS-422/RS-485 Networks

• RS-232 Mode Signal lines: TD, RD, RTS, CTS, DTR, DSR, &

DCD, and Signal Ground.

• 2 Channel RS-422 Signal Lines: TD(A), TD(B), RD(A), RD(B)
and Signal Ground.

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Specifications

Bus: PCI bus version 2.1
Slot: Requires one PCI slot
Dimensions: 6.9 x 4.2 in (17.5 x 10.7 cm)
I/O Connections: One 25-pin male D-sub (DB25M) connector
OS Supported: Windows 95, 98, 2000 and NT 4.0

Baud rates: 460.8K baud maximum in RS-232/422/485 modes
UARTs: 16550A 16 byte TX and RX buffers (3PCIOSD1A), or
16850 128 byte TX and RX buffers (3PCIOSD1B)
Character length: 5, 6, 7, or 8 bits
Parity: Even, odd or none
Stop bits: 1, 1.5, or 2

RS-232 Control/Data Lines Drivers/Receivers:
Device: SP211H Transceiver
High level output voltage: 5.0 V minimum
Low level output voltage: -5.0 V minimum
Output current limited to: ±25 mA
Input high threshold voltage: 1.7 V maximum
Input low threshold voltage: 0.8 V minimum
Device will withstand: ±15V

RS-422/485 Driver/Receiver:
Device: 75ALS180 or MAX491
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.

Termination: A 120Ω termination resistor is jumper selectable on the
422/485 receiver.

continued next page

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Optical Isolation:
Data Line Device: HCPL0600
Handshake Line Device: IL207

Max. Power Consumption: All ports loaded
+5 V @ 325.0 mA or 1.625 W

Accessories:

Software: Driver Disk (3.5) for Windows 95/98/2000/NT 4.0
PCI/USB COM Port Utility Disk (3.5)

Manual: Instruction Manual (this booklet)

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4 Chapter 1 Documentation Number 3PCIOSD1x-3903m Manual

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Chapter 2: SETUP
Inspection

Your 3PCIOSD1x serial card was tested for proper operation before
shipment. It should be in perfect mechanical and electrical condition
upon receipt.

The card is normally pre-configured for RS-232 operation.
The data clock speed is set by one jumper to x1 (normal) operation

or to x4 operation.
The operating mode of the card is set using 8 jumpers: 4 jumpers

select RS-232 operation or RS-422/485 operation, one jumper sets
RTS for RS-232 & RS-485 modes or Send Data for RS-485 mode, 2
jumpers select RS-422 or RS-485 operating modes for Receive and
Transmit, and the last jumper selects 120 ohm termination for the
RS-422 or RS-485 Receive.

Refer to Jumper Mode Table in Appendix C.

CAUTION: ELECTROSTATIC SENSITIVE DEVICE

Use ESD precautions for safe handling.

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

• Discharge any static electricity buildup 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 to set the configuration jumpers. After
setting the jumpers, 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.

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Figure 1. Silk Screen Plot of 3PCIOSD1x PCB

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RS-232 Mode

RS-422 Mode

To configure the port for RS-232 mode, 5 jumpers must be
set/checked. The following settings will configure the port as RS­232:

1. Set four jump ers of JP2 (A-D) t o the " 232" (left) position.

2. Set JP1 to the "RTS(232)" (right) position.

The remaining jumpers, JP4, are unused in the RS-232 mode and
may be in either position. Figure 2 shows the jumper configuration to
set the port for RS-232 mode with *1 clock enabled.

JP2

A 23 2
B 23 2
C 232
D 232

MODES

TX 422
RX 4 2 2

IN OUT

TERMINATI ON

422/ 485
422/ 485

422/ 485
422/ 485

485

JP4

485

CONTROL

SD

JP1

RTS( 2 32 )

*4

JP3

*1

CLOCK

Figure 2. RS-232 Mode Jumper Settings

RS-232 Pinouts

The DB-25 male connector on the 3PCIOSD1x cards is configured
as standard DTE RS-232 serial port. Table 1 lists pin numbers and
descriptors.

Name Description Direction DB25M Pin

Shield Shield ------ 1

TD Transmit Data Output 2

RD Receive Data Input 3
RTS Request to Send Output 4
CTS Clear to Send Input 5
DSR Data Set Ready Input 6
GND Signal Ground ------ 7
DCD Data Carrier Detect Input 8
DTR Data Terminal Ready Output 20

Table 1: RS-232 Pinouts

To configure the port for RS-422 mode, 7 jumpers must be
set/checked. The following settings configure the port as RS-422:

1. Set the fo ur jumpe rs of JP 2 (A-D) to the "4 22/485" (right)
position.

2. Set the top jumper " TX " of JP4 to the “422” (left) position.

3. Set the second jumper "RX" of JP 4 to t he “422 ” (l ef t) po sit ion .

4. The JP1 Control (SD/RTS) jumper is unused in the RS-422
mode and may be in either position.

5. The bottom jumper "Termination" of JP4 switche s the 120Ω
receiver termination resistor IN or OUT. Typically this resistor is
not used. In some cases using high baud rates and very long
cables, termination is needed. See B&B’s free RS-422/485

Application Note, Termination section, page 16, for more
information (available on our websites). Figure 3 shows the

jumper configuration to set the port for RS-422 mode with *1
clock enabled.

JP2
A 23 2
B 23 2

C 232
D 232

MODES

TX 422

RX 42 2

IN OUT

TERMINAT I ON

422/ 485
422/ 485

422/ 485
422/ 485

485

JP4

485

CONTROL

SD

JP1

*4

RTS( 232)

JP3

*1

CLOCK

Figure 3. RS-422 Mode Jumper Settings

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RS-422 Pinouts

The RS-422 mode supports 2 channels (transmit and receive).

Name Description Direction DB25M

Pin

Shield Shield ------ 1

TD (A) −
RD (A) −

Transmit Data A Output 2

Receive Data A Input 3

GND Signal Ground ------ 7

TD (B) + Transmit Data B Output 14

RD (B) + Receive Data B Input 16

Table 2: RS-422/485 Pinouts

With 2-wire RS-485 mode operation, your connection cable must
jumper TD(A) to RD(A) and TD(B) to RD(B). Connect from TD(A)
and TD(B) to the Data A(−) and Data B(+) wires of your RS-485
network.

Note that the EIA RS-422 Specification labels data lines with an "A"
and "B" designator. Some RS-422 equipment uses a "−" and "+"
designator. In almost all cases, the "A" line is the equivalent of the
"−" line and the "B" line is the equivalent of the "+" line. More

information on RS-422 communications can be found in B&B’s free
RS-422/485 Application Note (available on our websites).

RS-485 Mode

To configure the port for RS-485 mode, 8 jumpers must be
set/checked. The following settings configure the port as RS-485:

1. Set four jump ers of JP2 (A-D) t o the "422/ 485" (right) position.

2. Set the top jumper " TX " of JP4 to the “485” (right) position.

3. For 2-wire operation, set the second jumper "RX " of JP4 t o the
"485" (right) position (half duplex). For 4-wire operation, set it t o
the "422" position (full duplex, Receive enabled)

4. Set the JP1 Control jumpe r to select the type of RS-485 tr ansmit
driver control, automatic Send Data (SD) or RTS . Select SD
control unless you are sure that your software requires RTS
control.

5. The bottom jumper "Termination" of JP4 switche s the 120 Ω
Termination resistor IN or OUT. Typically this resistor is not
used. In some cases, using high baud rates and very long
cables, termination is needed. See B&B’s free RS-422/485

Application Note, Termination section, page 16, for more
information (available on our websites).

Figure 4 shows the jumper configuration to set the port for 2-wire
RS-485 mode with *1 clock enabled.

JP2
A 23 2
B 23 2
C 232
D 232

MODES
TX 422
RX 422

IN OUT

TERMINATI ON

422/ 485
422/ 485
422/ 485
422/ 485

485

JP4

485

CONTROL

SD

JP1

*4

RTS( 232)

JP3

*1

CLOCK

Figure 4. RS-485 Mode Jumper Settings

RS-485 Pinouts
The pinouts in RS-485 mode are the same as those listed in Table

2: RS-422/485 Pinouts on the previous page.

Explanation of RS-485 Operation

In RS-485 mode, the transmit driver must be enabled to transmit,
and set to a high impedance (tri-state) mode at the end of
transmission. In two wire (half duplex) mode, the receiver is disabled
during transmit, and enabled when not transmitting.

The 3PCIOSD1x card provides two methods of enabling/disabling
the transmit driver, automatic Send Data (SD) control and Request
To Send (RTS) control. With automatic SD control, the driver is
enabled when data is sent. The driver remains enabled for the
transmission time and ten data bits after data transfer is complete.
The SD circuit automatically adjusts its timing to the baud rate of the
data. With RTS control, software must assert the RTS line to enable
the driver and de-assert to disable the driver. To select SD control
for the port, place JP1 jumper in the “Send Data” (left) posit i on .
Place this jumper in the “RTS(232)” (right) position for RTS control.

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The receiver can also be enabled and disabled, a useful feature in
two-wire communications to prevent the transmitted data from
"echoing back" on its own receiver. The second jumper "RX" of JP4
determines the receiver mode. When the jumpers are placed in the
“485” position, the "echo" is turned off. This is achieved by disabling
the receiver when the transmit driver is enabled. Placing this jumper
in the “422” position will hold the receiver enabled at all times. More

information on RS-422 communications can be found in B&B’s free
RS-422/485 Application Note (available on our websites).

RS-422 and RS-485 Termination

A 120Ω termination resistor has been provided for the RS-422/485
receiver. Note that termination should only be used in systems with
both high baud rates (>19200) and over several thousand feet of
cable. If a value other than 120 Ω is desired, space for a through­hole resistor has been provided on the board adjacent to the surface
mount termination resistor. This through-hole termination resistor is
labeled as RTAB while the surface mount termination resistor is
labeled as RTAA. See B&B’s free RS-422/485 Application Note,

Termination section, page 16, for more information (available on our
websites).

RS-485 Network Biasing

Biasing is required on an RS-485 network to hold the network in the
marking state between transmissions. The 3PCIOSD1x RS-485
receiver is biased with a 4.7 KΩ pull-up resistor (R28A) on the
Receive Data B line and a 4.7 KΩ pull-down resistor (R29A) on the
Receive Data A line. These values are usually adequate for
networks without termination and small numbers of nodes. For more
complex networks, the user must calculate the required value and
replace these resistors. Space for through-hole resistors has been
provided over the top of the surface mount components placed at
the factory. The through-hole resistor for the pull-up is marked as
R28B and the pull-down is marked as R29B.

4 X Baud Rate Option

Baud rates higher than 115,200 are possible with the 3PCIOSD1x
card in RS-232, 422, or 485 mode. Jumper JP3 controls the clock
frequency supplied to the UART. By moving this jumper to the “*4”
(left) position, the clock frequency is increased from 1.8432 to

7.3728 MHz. This multiplies all UART baud rates by 4 times. For
example, if the software is set for 57.6K baud, the actual baud rate
will be increased by a factor of four to 230.4K baud. In many
systems, these higher baud rates can improve throughput
significantly. However, remember that baud rates and actual
throughput are only proportional if the system can keep up with the
communications, otherwise increasing the baud rate effectively only
increases the idle time between characters.

Installing the Card

1. Ground yourself by touching the metal chassis of the computer
to discharge any static electricity.

2. Turn the power to your computer off and unplug the power cord.

3. Remove the cover of the computer.

4. Locate a free PCI expansion slot.

5. Remove the expansion slot cover. Save the screw f or
installation of the 3PCIOSD1x card.

6. Install the card into the unused slot. Be certain that the card is
inserted completely (fully seated) in the slot.

7. Secure the card with the moun tin g screw from step 5.

8. Replace the cover, plug in the power cord, and power up the
system.

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Chapter 3: WINDOWS INSTALLATION
Windows 95 and Windows 98

Any prior installation using previous B&B serial drivers must be
removed before installing the new drivers. (Refer to page 20.)

Windows 98 screens are shown for this section. Windows 95 is a bit
different with fewer steps and the screen names and text shown
differs. Windows 95 differences are noted (W95:…)

1. Configure the port on th e PCI card to the desired RS­232/422/485 mode using the jumpers.

2. Install the card in the slot. Start the computer.

3. Windows will detect the PCI card, start the Add New Hardware
Wizard, and begin driver installation. When installation is
complete, Windows will set the hardware addressing & interrupt
using the drivers and the Plug and Play function of the
Operating System.

4. The driver installation proceeds in two par ts. The fi rst pa rt
installs the driver for the PCI Serial card. The second part
installs the serial driver for the Com Port A (Port A=Port 1).

NOTE: The Optically Isolated 3PCIOSD1 PCI Serial Adapter card
will be identified as the 3PCISD1 PCI Serial Adapter, both cards use
the same drivers and are functionally the same to the Operating
System.

5. After new hardware is det ecte d, this screen will appear. (W95:
This screen is named Update Device Driver Wizard).

6. Click Next to continue. (W95: Insert the Driver Disk in Drive,
then click Next - skip to step 9)

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7. Click Next.

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8. Select Floppy disk drives, Specify A:\

9. Insert the driver disk, then Click Next.
Windows will find “PCI Serial Adapter (3PCISD1)” and the driver inf

file. (W95: Driver name not shown - skip to step 11)

10. Click Next.

11. Click Finish to begin the second part of the driver installation

which installs the Com port driver for Port A.

12. Click Next. (W95: Skip to step 15)

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13. Click Next to continue. Re-insert the driver disk if needed.

Windows will find the Communications Port and inf file.

14. Click Next. (W95: Driver name not shown)

15. Click Finish to complete Com driver installation.

The computer will finish Com driver installation for Port A.

16. Wait for the process to complete.

To verify the installation, open My Computer, Control Panel,
System (or Start, Setting, Control Panel, System).

Then select the Device Manager Tab.

continued next page

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Removal of Card And Drivers

If you need to remove the card from your system or remove the
current driver before installing a possible future driver upgrade:

1. Open My Computer, Control Panel, System (or Start, Setting,
Control Panel, System).

2. Select the Device Manager Tab (see figure on prior page).

3. Click B&B Electronics Serial Adapt ers , then Select the PCI
Serial Adapter (3PCISD1) for the 3PCIOSD1x.

4. Click the Remove butt on.

5. Close the Windows, and Open My Computer, Drive C:

Open the Windows directory on your Hard Drive, then Open the Inf
folder, then Other. (If the Inf folder is not shown, it is hidden. Select
View, Folder Options, Files and Folders, Show all files. For
Win95: Select View, Options, View, Show all files)

Click the B&B Electronics Serial Adapters device to view the
adapter. If you want other details, Select Properties.

Click Ports (COM & LPT) to view the COM numbers assigned by
Windows to the card.

The 3PCIOSD1x card will have 3PCISD1 Port A (COMx). The COM
port number will normally be COM5, if available.

17. You can now remove the driver disk, close the Windows, and
check the new ports with your software.

If your software requires accessing a COM port below COM5, and
you have unused COM numbers not occupied by a FAX/Modem or
other device, you can re-assign the PCI card COM numbers using
our B&B PnP COM Rename utility. Refer to Appendix F.

Documentation Number 3PCIOSD1x-3903m Manual Chapter 3 19

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. Remove the B&B INF files. (*BBMSER.INF & *BBMSER95.INF)
Close the Window.

7. Shut down the computer, then remove the card.

20 Chapter 3 Documentation Number 3PCIOSD1x-3903m Manual

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 353-91-792444 – Fax [phone]

Windows 2000 Professional

This section covers device driver installation for
Windows 2000 Professional.

1. Configure the port on th e PCI card to the desired RS­232/422/485 mode using the jumpers.

2. Install the card in the slot, start the computer as an Administrator
or ask your system administrator to install the software.

3. Windows will detect the PCI card and start Found New
Hardware Wizard to begin driver installation. When installation is
complete, Windows will set the hardware addressing & interrupt
using the drivers and the Plug and Play function of the
Operating System.

4. Installation will install one driver for the PCI Serial card, and a
second driver which is used to assign a Com port to the card.

6. Select Search, Click Next.

5. Click Next to continue.

Documentation Number 3PCIOSD1x-3903m Manual Chapter 3 21

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]

7. Insert the driver disk in the Floppy disk drive A: Click Next.

22 Chapter 3 Documentation Number 3PCIOSD1x-3903m Manual

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 353-91-792444 – Fax [phone]

8. Click Next.

NOTE: The 3PCIOSD1 Optically Isolated PCI Serial Adapter card
will be identified as the hardware compatible 3PCISD1 PCI Serial
Adapter. Both cards use the same drivers and are functionally the
same to the Operating System.

9. Open My Computer, Control Panel, System, then select the
Hardware tab on System Properties.

10. Select Device Manager, then view the device list.

Under B&B Electronics Serial Adapters, the PCI card is installed.
Under Ports, COM3 was assigned to port A in the card.

9. Click Finish to complete the Install.

10. Wait for the process to complete.
Check to verify that a new com port was assigned to the card.

Documentation Number 3PCIOSD1x-3903m Manual Chapter 3 23

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]

11. You can now remove the driver disk, close the Windows and
check the new Com port with your software.

24 Chapter 3 Documentation Number 3PCIOSD1x-3903m Manual

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 353-91-792444 – Fax [phone]

Removal of Card & Drivers

If you need to remove the card from your system or remove the
current driver before installing a possible future driver upgrade:

1. Click on 3PCISD1 Port A under P o rts (COM & LPT) and select
Uninstall (right click). (The 3PCIOSD1x identifies as 3PCISD1.)

2. Next Click on PCI Serial Adapter (3PCISD1) under B&B
Electronics. Select Uninstall.

3. Remove the two sets of driver files from the Windows INF
directory. (These are named by the OS in the sequence of
installation. On a clean system they are: Oem0.inf & Oem0.PNF
and Oem1.inf & Oem1.PNF. The .inf versions should be verified
by opening it with Notepad, then checking that it is a B&B
Electronics file. The PNF version is a compiled copy of the same
information.)

You can use the Find, File or Folder function to search for the
text B&B within the files.

You may need to set your Views (under My Computer) to show
all files and folders if the INF directory and .inf files are not
visible.

4. Shut down the system and remove the card.

Windows NT 4.0

1. Configure the port on th e PCI card to the desired RS­232/422/485 mode using the jumpers.

2. Install the card in the slot, start the computer, and log on to
Windows NT 4.0 as an Administrator or ask your system
administrator to install the software.

3. Open the Control Panel. (S ele ct Sta rt, Set tings)

4. Select Add/Remove Programs.

continued next page

Documentation Number 3PCIOSD1x-3903m Manual Chapter 3 25

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]

26 Chapter 3 Documentation Number 3PCIOSD1x-3903m Manual

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 353-91-792444 – Fax [phone]

5. Click the Install button, then click Next.

continued next page

6. Insert the driver disk into drive A:

7. Enter A:\WinNT40\Setup.exe in the Command line for
installation program window. (as above).

8. Click Finish to start the Setup program.

9. Click Next. Follow the instructions until completed.

10. This driver does not require re-booting to complete installation.

11. Open the Control Panel, select Ports.

Documentation Number 3PCIOSD1x-3903m Manual Chapter 3 27

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]

28 Chapter 3 Documentation Number 3PCIOSD1x-3903m Manual

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 353-91-792444 – Fax [phone]

12. Verify 1 new COM Port. (shown here as COM5)
If you have 1 new COM port, the installation is complete. Select the

port, select Settings, Advanced. You should obtain the message,
"There are no user configurable Advanced I/O parameters for this
COM port."

Check the port with your software or with a Loopback test.
NOTE: In the above example, a serial mouse is connected to the

port which would usually be COM1. NT does not show it. COM2 is
the second built-in serial port.

continued next page

You can check details of the serial card setup using Windows NT
Diagnostics, found under Administrative Tools. This can show the
Resources used such as addresses and IRQ.

Windows Diagnostics will not allow changing anything.

The above shows one port using PCI card interrupt.

continued next page

Documentation Number 3PCIOSD1x-3903m Manual Chapter 3 29

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]

30 Chapter 3 Documentation Number 3PCIOSD1x-3903m Manual

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 353-91-792444 – Fax [phone]

The screen below shows the address range for the serial port on the
B&B Electronics 1-port Serial Card.

Removal of Card and Driver

If you need to remove the card from your system or remove the
current driver before installing a possible future driver upgrade:

1. Open the Windows NT subdirectory.

2. Open System32.

3. Open Drivers.

4. Find the "Bbserial.Sys" file and delete it.

5. Shut down the system.

6. Remove the Optically Isolated PCI Se rial Ada pter card.

continued next page

Documentation Number 3PCIOSD1x-3903m Manual Chapter 3 31

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]

32 Chapter 3 Documentation Number 3PCIOSD1x-3903m Manual

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 353-91-792444 – Fax [phone]

Chapter 4: TROUBLESHOOTING

If you have any trouble starting your system after installing the
card, the card may not be properly seated in the slot. Remove and
re-insert it or try a different slot.

If you are unable to communicate with the card using your software
and hardware devices:

1. Check your pinouts. In RS-422 or RS-485 mode the "A" lines
should match your "A" or "-" lines. "B" lines should match your
"B" or "+" lines. Note: RS-422/485 pinouts are non-standard.

2. Use the COMTest program provided on the PCI/USB COM
Port Utility Disk with a loop back to check the card. Run
setup.exe to install COMTest on your program menu under
B&B Electronics. A Loopback connection for RS-232 connects
the Transmit output to the Receive input. (pins #2 & #3 on the
DB25 connector) For RS-422 or 4-wire RS-485, connect the
TD(A) to RD(A) and the TD(B) to RD(B). Then use the
COMTest program to send characters, and observe the
characters being received. To check 2-wire RS-485, you will
need to enable the receiver by moving the receive jumper to
422 mode, or use one Port to transmit to another by cross
connecting and loading COMTest twice, one copy for each
port. Characters typed in one copy of COMTest will appear in
the receive window of the other. Note that software must
ignore the RS-232 handshaking lines in RS-422/RS485 mode,
the input lines (CTS, DSR, DCD, RI) are not pulled high.

3. Try another software package for troubleshooting.

4. Check our website for available FAQ's or troubleshooting
hints.

5. Call B&B Electronics Technical Support for troubleshooting
assistance.

USA Office

Technicians are available at [phone] to answer your
questions from 8 AM - 5 PM weekdays (Central Time).

European Office

Technicians are available at + 353 91-792444 to answer your

questions from 8:30 AM – 5 PM weekdays (GMT Time).

Documentation Number 3PCIOSD1x-3903m Manual Chapter 4 33

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 353-91-792444 – Fax [phone]

34 Chapter 4 Documentation Number 3PCIOSD1x-3903m Manual

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]

Appendix A: 3PCIOSD1x I/O SCHEMATIC

Port 1 I/O Schematic

Documentation Number 3PCIOSD1x-3903m Manual Appendix A A-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]

A-2 Appendix A Documentation Number 3PCIOSD1x-3903m Manual

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 353-91-792444 – Fax [phone]

Appendix B: RS-232 & RS-422/485 Pinouts

Table 1: RS-232 Pinouts

Name Description Direction DB25M

Pin

Shield Shield ------ 1

TD Transmit Data Output 2

RD Receive Data Input 3
RTS Request to Send Output 4
CTS Clear to Send Input 5

DSR Data Set Ready Input 6
GND Signal Ground ------ 7
DCD Data Carrier Detect Input 8
DTR Data Terminal Ready Output 20

Table 2: RS-422/485 Pinouts

Name Description Direction DB25M

Pin

Shield Shield ------ 1

TD (A) −

RD (A) −

GND Signal Ground ------ 7

TD (B) + Transmit Data B Output 14
RD (B) + Receive Data B Input 16

With 2-wire RS-485 mode operation, your connection cable must
jumper TD(A) to RD(A) and TD(B) to RD(B). Connect from TD(A)
and TD(B) to the Data A(−) and Data B(+) wires of your RS-485
network.

Note that the EIA RS-422 Specification labels data lines with an "A"
and "B" designator. Some RS-422 equipment uses a "−" and "+"
designator. In almost all cases, the "A" line is the equivalent of the
"−" line and the "B" line is the equivalent of the "+" line. More

information on RS-422 communications can be found in our free RS­422/485 Application Note (available on our websites).

Transmit Data A Output 2

Receive Data A Input 3

Documentation Number 3PCIOSD1x-3903m Manual Appendix B B-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]

B-2 Appendix B Documentation Number 3PCIOSD1x-3903m Manual

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]

Appendix C: Jumper Mode Table

Jumpers

Port 1 (A)

JP1

RS-232 RS-422

4-Wire

RS-485

4-Wire

RS-485

2-Wire

RTS(232) not used SD/RTS * SD/RTS *

Control

JP2 A 232 422/485 422/485 422/485

JP2 B 232 422/485 422/485 422/485
JP2 C 232 422/485 422/485 422/485
JP3 D 232 422/485 422/485 422/485

JP4 TX not used 422 485 485

JP4 RX not used 422 422 485

JP4

not used IN/OUT IN/OUT IN/OUT

Termination

JP3

*4/*1 *4/*1 *4/*1 *4/*1

Clock

How to Use the Table: The left vertical column shows the jumpers
for the port. The four right vertical columns show the position setting
of the jumper at the left for RS-232, RS-422 or 4-wire RS-485 or 2­wire RS-485 modes.

NOTES:

RS-485 Mode: The JP1 Control jumper should be set to Send Data
mode unless your software requires RTS control.

Refer to the Setup section for explanations of the SD/RTS ,
Termination and Clock settings.

Note that termination should only be used in systems with both high
baud rates (>19200) and over several thousand feet of cable.

Information on RS-422 and RS-485 communications can be found in
the B&B Electronics RS-422/485 Application Note (available free
on our websites).

Documentation Number 3PCIOSD1x-3903m Manual Appendix C C-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]

C-2 Appendix C Documentation Number 3PCIOSD13903m Manual

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]

Appendix D: TROUBLESHOOTING WITH COMTest

Included on the PCI/USB COM Port Utility Disk is a test program
called COMTest. It can be installed on your “Programs” menu for
use by inserting the disk and running Setup.

COMTest is a simple 32-bit Windows (Windows 95, 98, 2000 or
NT) COM port Test program. It is a simple tool that can be used to
troubleshoot RS-232, RS-422, or RS-485 serial communications. It
allows multiple ports, at any address and IRQ, to be opened at any
given time. COMTest can also be found on the Internet at the B&B
Electronics Mfg. Co. Websites: www.bb-elec.com

europe.com.

or www.bb-

Documentation Number 3PCIOSD1x-3903m Manual Appendix D D-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]

D-2 Appendix D Documentation Number 3PCIOSD1x-3903m Manual

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]

Appendix E: ISOLATION AND GROUND

The 3PCIOSD1x provides 2000 VDC minimum isolation on all
lines from the DB25 connector to the host computer. The
3PCIOSD1x cards have no connection from pin 1 (chassis ground)
to ground of the host computer. This was done to completely isolate
the computer end of the communications. In most applications, the
shield wire should be connected to ground on only one end of the
network. Board space is provided to connect pin 1 to the isolated
port ground (pin 7). If you wish to make this connection, it is
recommended that a 100Ω ½ watt resistor be installed in R5 of the
3PCIOSD1x. The purpose of the resistor is to limit large currents
flowing through the ground connection.

Documentation Number 3PCIOSD1x-3903m Manual Appendix E E-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]

E-2 Appendix E Documentation Number 3PCIOSD1x-3903m Manual

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]

Appendix F: Renaming COM Ports - Win 95/98/ME

Renaming PCI COM Ports Using the PnP COM Rename Utility

CAUTION: You must be using Windows 95/98 or ME. This utility is
not designed for NT or other Windows versions.

This program edits the registry directly, it will only change entries
related to B&B PCI or USB Serial Ports. Improper use of this
program can cause conflicts with other COM Ports installed on your
computer.

Renaming COM ports will only affect software that accesses COM
ports through Windows, not software that accesses ports from DOS
or at the hardware level.

This program should only be used after all serial ports have been
installed.

Windows 95/98 and ME automatically assigns COM port numbers
starting at COM5 when the port is not at the standard base
addresses for COM1 to COM4.

If your software refuses to access COM ports above COM4, and you
have unused COM numbers that you want to be able use with your
B&B PCI Serial Card, this utility can be used to rename some or all
of the ports to the unused COM numbers.

First, check the ports list shown in the Device Manager, then check
any Modem or FAX device to make sure that the port number isn't
being used for a FAX/Modem or Network Redirector.

If you have built-in ports you want to disable from the BIOS in order
to use your PCI card at that COM number, first remove the port with
the Device Manager. Then re-boot to the BIOS, disable the port with
hardware settings, Exit with a "Save Settings", then re-start
Windows Next, verify the port number is not present. Then use the
Rename utility to rename the PCI card ports as needed.

To Remove a Port: Choose Settings, Control Panel, System, Device
Manager, then select the port to highlight it. Click Remove below the
window. To remove all B&B PCI ports, select the B&B Serial
Adapter. This clears registry entries for the card and ports.

Install the PCI/USB COM Port Utilities

(1) To use the PnP COM Rename utility, insert the PCI/USB COM

Port Utility Disk and run Setup.exe. This will install COMTest
and PnP COM Rename under Programs, B&B Electronics.

(2) The Rename utility will not be installed if you are running

Windows 2000 or NT.

Using PnP COM Rename

(1) Shut down all programs that are accessing any Com ports.
(2) Start the PnP COM Rename Utility from the Programs menu

under B&B Electronics.

(3) Read the Cautionary Warnings. It is possible to rename a PCI or

USB serial port to a number already in use which will cause
problems. If any problems occur after renaming, you may need
to re-start the system and rerun the Rename utility to correct the
situation or remove the serial card in the Device Manager. Then
Refresh the Device Manager to detect the card and re-install the
drivers. Determine which renamed COM port caused the

problem, and do not use that name for a renamed port.
(4) Accept the conditions of use by clicking Yes or click No to exit.
(5) Select the currently named COM port number you want to

change in the left window, then the new number in the right

window. Then click Finish. Repeat for other ports as needed.

Documentation Number 3PCIOSD1x-3903m Manual Appendix F F-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]

F-2 Appendix F Documentation Number 3PCIOSD1x-3903m Manual

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) If the PCI card was previously installed and not removed in the

Device Manager, you may find several B&B COM ports with the
same number. The last instance of the same number is usually
the most recent installation. Only the active ports can be
renamed with the program to show the new name under the
Device Manager. Inactive port numbers will not show any
change after renaming. Ideally, unused entries should be
removed by using RegEdit, then having the system re-install the
drivers to make the entries. This will result in a single entry for
each port on the card, and only that entry will need to be
changed.

(7) After all B&B PCI or USB COM ports have been renumbered as

needed, click Close to exit.

If you need to install another serial device after using renaming with
this utility, you must:

(1) Name all COM Ports back to original settings using this

program.

(2) Install the new device according to manufacturer directions.

(3) Use this utility to rename the B&B COM Ports again as needed.

Documentation Number 3PCIOSD1x-3903m Manual Appendix F F-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]

F-4 Appendix F Documentation Number 3PCIOSD1x-3903m Manual

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]

Appendix G: DECLARATION OF CONFORMITY

Manufacturer’s Name: B&B Electronics Manufacturing Company
Manufacturer’s Address: P.O. Box 1040
707 Dayton Road

Model Numbers: 3PCIOSD1a/b
Description: Optically Isolated Serial PCI Card
Type: Light industrial equipment
Application of Council Directive: 89/336/EEC
Standards: EN 55022
EN 61000-6-1
EN 61000 (-4-2, -4-3, -4-4, -4-5, -4-6, -4-8, -4-11)

William H. Franklin III, Director of Engineering

Ottawa, IL 61350 USA

DECLARATION OF CONFORMITY

Documentation Number 3PCIOSD1x-3903m Manual Appendix G G-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]

G-2 Appendix G Documentation Number 3PCIOSD1x-3903m Manual

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]