Measurement PCI-CTR10 User Manual
PCI-COM232 Series
User’s Manual
Revision 2
October, 2000
© Copyright 2000
LIFETIME WARRANTY
Every hardware product manufactured by Measurement Computing Corp. is warranted against defects in materials
or workmanship for the life of the product, to the original purchaser. Any products found to be defective will be
repaired or replaced promptly.
LIFETIME HARSH ENVIRONMENT WARRANTY
Any Measurement Computing Co rp. prod u ct which is d amaged du e to misuse ma y be replaced for on ly 50 % of t he cu rrent pri ce.
I/O boards face some harsh environments, some harsher than the boards are desi gned to withstand. When that happ ens, ju st return
the board with an order for its replacement at onl y 50% of the list price. Measurement Computi ng Corp. does not need to profit
from your misfortune. By the way, we will honor this warranty for any other manufacture’s board that we have a replacement
for!
TM
30 DAY MONEY-BACK GUARANTEE
Any Measurement Computing Corp. product may be returned within 30 days of purchase for a full refund of the price paid for
the product being returned. If you are not satisfied, or chose the wrong product by mistake, you do not have to keep it. Please call
for a RMA number first. No credits or returns accepted without a copy of the original invoice. Some software products are
subject to a repackaging fee.
These warranties are in lieu of all other warranties, expressed or implied, including any implied warranty of
merchantability or fitness for a particular application. The remedies provided herein are the buyer’s sole and
exclusive remedies. Neither Measurement Computing Corp., nor its employees shall be liable for any direct or
indirect, special, incidental or consequential damage arising from the use of its products, even if Measurement
Computing Corp. has b e en notified in advance of the possibility of such damages.
MEGA-FIFO, the CIO prefix to data acquisition board model numbers, the PCM prefix to data acquisition board
model numbers, PCM-DAS08, PCM-D24C3, PCM-DAC02, PCM-COM422, PCM-COM485, PCM-DMM, PCMDAS16D/12, PCM-DAS16S/12, PCM-DAS16D/16, PCM-DAS16S/16, PCI-DAS6402/16, Universal Library
Insta
Harsh Environment Warranty
Cal,
and Measurement Computing Corp. are registered trademarks of
Measurement Computing Corp.
IBM, PC, and PC/AT are trademarks of International Business Machines Corp. Windows is a trademark of
Microsoft Corp. All other trademarks are the property of their respective owners.
,
Information furnished by Measurement Computing Corp. is believed to be accurate and reliable. However, no
responsibility is assumed by Measure ment Co mputing Corp. neither for its use; nor for any in fringe ments o f patent s
or other rights of third parties, which may result from its use. No license is gra nted by implication or otherwise
under any patent or copyrights of Measurement Computing Corp.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form by any
means, electronic, mechanical, by photocopying, recording or otherwise without the prior written permission of Measurement
Computing Corp.
Notice
Measurement Computing Corp. does not authorize any Measurement Computing Corp. product
for use in life support systems and/or devices without the written approval of the President of
Measurement Computing Corp. Life support devices/systems are devices or systems which, a) are
intended for surgical implantation into the body, or b) support or sustain life and whose failure to
perform can be reasonably expected to result in injury. Measurement Computing Corp. products
are not designed with the components required, and are not subject to the testing required to
ensure a level of reliability suitable for the treatment and diagnosis of people.
HM PCI-COM232.doc
ii
TABLE OF CONTENTS
1.0 INTRODUCTION ............................................................................................................................1
2.0 INSTALLATION..............................................................................................................................2
2.1 Software Installation.....................................................................................................2
2.2 Hardware Installation....................................................................................................2
2.3 Set up the COM port parameters..................................................................................3
2.4 Test the COM ports for proper operation (ComApp.exe).............................................3
2.5 Extended Baud Rate Operation.....................................................................................4
2.5.1 Windows 95/98 Specific Configuration.............................................................5
2.5.2 Windows NT/2000 Specific Configuration ......................................................5
2.5.3 Resetting Extended Baud Rate Selection on Power Up.....................................6
3.0 HARDWARE CONNECTIONS......................................................................................................7
3.1 Introduction...................................................................................................................7
3.2 DB9M Connections......................................................................................................7
3.3 DB25M Connections....................................................................................................7
3.4 PCI-COM232/4 Main DB37M Connector....................................................................8
3.5 Port Identification.........................................................................................................9
3.6 Changing the COM Port assignments...........................................................................9
3.7 Standard COM port configurations: .............................................................................10
4.0 REGISTER MAP..............................................................................................................................11
4.1 Register Map Overview................................................................................................11
4.2 Register Descriptions....................................................................................................12
4.2.1 INTERRUPT STATUS/CONTROL..................................................................12
4.2.2 PORT 1 CLOCK SELECT / INTERRUPT STATUS.......................................12
4.2.3 PORT 2 CLOCK SELECT / INTERRUPT STATUS.......................................13
4.2.4 PORT 3 CLOCK SELECT / INTERRUPT STATUS.......................................13
4.2.5 PORT4 CLOCK SELECT / INTERRUPT STATUS........................................14
5.0 SPECIFICATIONS ..........................................................................................................................15
6.0 TROUBLESHOOTING Q & A:......................................................................................................17
iii
This Page Intentionally Left Blank
iv
1.0 INTRODUCTION
The PCI-COM232 family consists of one, two and four port, RS-232 compatible, serial I/O boards
designed to operate in computers with PCI bus accessory slots. The package includes complete software
drivers for Windows 95, 98, NT and 2000 that allow the boards to be installed as standard “COM” ports
in your computer.
The boards are fully plug-and-play and provide an independent UART for each port. The boards provide
data and all standard RS-232 handshaking signals. They operate up to a maximum baud rate of 460.8
kbaud. All connections in the one and two port boards are made through standard DB9M connectors
while the four port board can be ordered with either DB9M or DB25M connectors.
The available models are shown in the table below.
Number On-Board Surge FIFO
Board of Ports
PCI-COM232 1 No 16 bytes
PCI-COM232/S 1 Yes 16 bytes
PCI-COM232/2 2 No 16 bytes
PCI-COM232/2/S 2 Yes 16 bytes
PCI-COM232/4 4 No 16 bytes
PCI-COM232/4/S 4 Yes 16 bytes
Suppression Depth
1
2.0 INSTALLATION
2.1 Software Installation
Insert the PCI-COM CD into your CD drive. If your systems auto-run feature is enabled the PCI-COM
Installation Wizard will automatically launch.
If the Installation Wizard does not auto-launch, you can initiate the software installation by running the
program SETUP.EXE on the CD. Do this by locating the CD’s SETUP.EXE file in your Windows
Explorer and double clicking on it. Assuming your CD drive is the E: drive, SETUP.EXE should be in E:\
Follow the Installation Wizard’s instructions and accept the default settings if possible.
2.2 Hardware Installation
The PCI-COM232 boards are completely plug-and-play. There are no switches or jumpers to set.
Configuration is controlled by your systems’ BIOS. To install the board, turn off your PC, unplug it, open
it, and insert your PCI-COM232 board into any available PCI slot.
The PCI-COM232 board is automatically assigned I/O addresses and Interrupts (IRQs) by your system
BIOS.
To check that all ports have been properly installed you may interrogate the COM port system with the
following sequence:
If you are using Windows 95 or 98
• Right click on the
• Click on
• Click on the
• Double click on the
If you are using Windows NT
• Right click
• Click on
• Click on the
If you are using Windows 2000
• Right click on the
• Left click on “Manage”
• Left click on
• Expand “Ports (COM & LPT)”
The new PCI-COM ports should be listed.
“Properties”
Start
“Control Panel”
“My Computer”
“Device Manager”
“Ports (COM & LPT)”
and then
“Ports”
“Device Manager”
icon
“My Computer”
tab
Settings
Icon on your desktop
Icon
on the Task Bar
Icon on your desktop
2
2.3 Set up the COM port parameters
If you are using Windows 95, 98 or 2000
To set the com port parameters (e.g. standard baud rates, parity) follow the sequence listed above
for Windows 95, 98 and 2000, and then double click on the port you wish to configure. The
Communications Port (COM#) Properties sheet will appear. Click on the
change the port settings to match your applications requirements.
If you are using Windows NT
“Port Settings”
tab and
To set the com port parameters (e.g. standard baud rates, parity) use the
found in the Control Panel. Select the port you wish to configure and change the port settings to
match your applications requirements.
Ports
applet that can be
2.4 Test the COM ports for proper operation (ComApp.exe)
An application is provided that allows you to test your installation by communicating with another
RS-232 serial port. This test application is called ComApp.exe, and was installed during your driver
installation procedure. ComApp is a simple ASCII terminal emulator that automatically sends whatever
you type on the keyboard over the selected COM port, and automatically displays the data the COM port
receives.
You may use this application to test between two ports on the same PC, or install it on two PCs and test
communication between them. If you are installing a multi-port board, or you have a free RS-232 port in
addition to the one you are adding with the PCI–COM board, you can use the first method by running two
instances of ComApp on the same PC.
If your COM port is connected to a simple ASCII controlled device, use ComApp to test for proper
operation simply by typing one or more commands, and watching how the external device responds.
To launch ComApp.exe, you can find the file using your explorer and then double-click on it.
Alternatively, starting with your Windows Start button, follow this procedure:.
Î
Start
Programs Î Measurement Computing Î ComApp
You can make a quick port communication test by connecting the PCI–COM board to another RS232
port, and sending/reading data between the two ports. You can use an RS-232 port on another PC or a free
RS-232 port on the same PC to which you are adding the PCI–COM board.
To do this test, install a null modem cable or adapter between the two ports. This serves to connect the
transmit pins from one port to the receive pins of the other and vice versa. Null modems adapters are
available at most computer stores or can be purchased from Measurement Computing Corp. (part #
SADP-25FM-NM for 25-pin, SADP-9FM-NM for 9-pin). To perform the test, follow the instructions
below:
1. Connect the two ports via a null modem cable/adapter
2. Launch the ComApp program (as described above)
3. Select the Settings menu block and configure the first port.
3
Figure 2-1. TTY Settings
4. Launch the ComApp again. You will get a second ComApp window. Go to the
menu and configure the second port. Note that you must use the same settings on both ports
for this test to work properly.
5. On both open ComApp windows, go to the
6. Once connected, move the cursor to either ComApp window. Whatever is typed in that
window should be immediately displayed in the other. You may also test port operations by
selecting the
characters will automatically be sent, and should appear on the other ComApp window.
Transfer
menu and clicking on
Action
menu and select
Send Data Block.
Connect.
A large block of ASCII
Settings
2.5 Extended Baud Rate Operation
Though it isn’t possible to set baud rates greater than 115.2 kbaud on the PCI-COM series using the
standard Windows
capable of operating at transfer rates up to 460.8 kbaud. The PCI-COM series boards have a
programmable divider between the on-board system clock and the UART. This divider can be set using
Advanced
the
PCIcom applet added to the NT/2000 Control Panel during the PCI-COM software installation.
If the divider is set to divide-by-4 (the default setting) the board’s baud rate is exactly as Windows sets it.
If the divider is set to divide by two, all the actual board baud rates become double what Windows has set
them to, while if the divider is set to divide by one, the board’s baud rate is four times the baud rate set in
Windows. These selections are summarized in the table below. We have only shown the values for the
baud rates higher than normally supported by windows.
Communications Port Properties
tab that was added to the Windows 95/98
dialog, the board and operating system are actually
Communications Port Properties
dialog, or the
UART Windows baud Actual
Clock Rate Divider
1.8432 MHz 4 (default) 115.2 kbaud 115.2 kbaud
3.6864 MHz 2 115.2 kbaud 230.4 kbaud
7.3728 MHz 1 115.2 kbaud 460.8 kbaud
rate setting baud rate
4
Loading...