Impulse 7205 User Manual
ULTRA COMM+2.LPCI
Users Manual
Part Number 7205
Sealevel Systems, Inc. Telephone: 864.843.4343
PO Box 830 Fax: 864.843.3067
Liberty, SC 29657 USA www.sealevel.com
Contents
INTRODUCTION............................................................................................................................... 1
OVERVIEW .......................................................................................................................................................1
WHAT’S INCLUDED..........................................................................................................................................1
FACTORY DEFAULT SETTINGS .........................................................................................................................1
CARD SETUP ................................................................................................................................... 2
RS-485 ENABLE MODES..................................................................................................................................2
ADDRESS AND IRQ SELECTION ........................................................................................................................3
LINE TERMINATION..........................................................................................................................................4
ELECTRICAL INTERFACE SELECTION................................................................................................................5
INSTALLATION................................................................................................................................6
OPERATING SYSTEM INSTALLATION ................................................................................................................6
WINDOWS 95/98/ME/NT/2000/XP..................................................................................................................6
LINUX ..............................................................................................................................................................6
QNX................................................................................................................................................................6
PHYSICAL INSTALLATION.................................................................................................................................7
TECHNICAL DESCRIPTION.............................................................................................................. 8
CONNECTOR PIN ASSIGNMENTS.......................................................................................................................8
RS-232 ............................................................................................................................................................8
RS-422/485 .....................................................................................................................................................8
DB-25M (CARD EDGE CONNECTOR)...............................................................................................................9
BAUD RATES AND OSCILLATOR VALUE...........................................................................................................9
SPECIFICATIONS ...........................................................................................................................10
ENVIRONMENTAL SPECIFICATIONS ................................................................................................................10
MANUFACTURING ..........................................................................................................................................10
POWER CONSUMPTION...................................................................................................................................10
MEAN TIME BETWEEN FAILURES (MTBF).....................................................................................................10
PHYSICAL DIMENSIONS..................................................................................................................................10
APPENDIX A - TROUBLESHOOTING ............................................................................................. 11
PPENDIX B - HOW TO GET ASSISTANCE...................................................................................12
A
APPENDIX C - ELECTRICAL INTERFACE ..................................................................................... 13
RS-232 ..........................................................................................................................................................13
RS-422 ..........................................................................................................................................................13
RS-485 ..........................................................................................................................................................13
APPENDIX D - ASYNCHRONOUS COMMUNICATIONS...................................................................14
A
PPENDIX E - SILK-SCREEN ........................................................................................................15
PPENDIX F - COMPLIANCE NOTICES......................................................................................... 16
A
FEDERAL COMMUNICATIONS COMMISSION STATEMENT................................................................................16
EMC DIRECTIVE STATEMENT........................................................................................................................16
WARRANTY...................................................................................................................................17
Figures
Figure 1- Headers J1B and J2B, RS-422............................................................................................................2
Figure 2 - Headers J1B and J2B, RS-485 ‘Auto’ Enabled, with ‘No Echo’....................................................2
Figure 3 - Headers J1B and J2B, RS-485 ‘Auto’ Enabled, with ‘Echo’..........................................................3
Figure 4 - Headers J1B and J2B, RS-485 ‘RTS’ Enabled, with ‘No Echo’.....................................................3
Figure 5 - Headers J1B and J2B, RS-485 ‘RTS’ Enabled, with ‘Echo’...........................................................3
Figure 6 - Headers J1A and J2A, Line Termination.........................................................................................4
Figure 7 - Headers E1 - E4, Electrical Interface Selection................................................................................5
Figure 8 - Asynchronous Communications Bit Diagram................................................................................14
© Sealevel Systems, Inc.
SL9062 Revision 8/2006
Sealevel Systems, Incorporated. All rights reserved.
.
Introduction
Introduction
Overview
The Sealevel Systems ULTRA-COMM+2.LPCI is a two channel Low Profile PCI serial I/O adapter for the PC
and compatibles. It provides two field selectable RS-232/422/485 serial ports supporting data rates up to 921.6K
bps.
Configure both ports as RS-232 for standard serial COM: port requirements. Choose the RS-422 mode for long
distance device connections up to 4000ft. where noise immunity and high data integrity are essential. Select RS-485
and capture data from multiple peripherals in a RS-485 multidrop network. Up to 31 RS-485 devices can be
connected to each port to automate your data collection. You can even mix the ports in any of the interface
combinations to provide maximum flexibility to your application.
In both RS-232 and RS-422 modes, the card works seamlessly with the standard operating system serial driver. In
RS-485 mode, our special auto-enable feature allows the RS-485 ports to be viewed by the operating system as a
COM: port. This allows the standard COM: driver to be utilized for RS-485 communications. Our on-board
hardware automatically handles the RS-485 driver enable. UART upgrades are available providing 32,64 and 128
byte FIFOs.
The ULTRA-COMM+2.LPCI ships with a Low Profile PCI bracket that will only work in a Low Profile PCI slot.
If you need a standard size PCI bracket, please order Item# 7205S.
What’s Included
The ULTRA COMM+2.LPCI is shipped with the following items. If any of these items are missing or damaged,
contact the supplier.
• ULTRA COMM+2.LPCI Serial I/O Adapter
Item# 7205 ships with a Low Profile PCI bracket
Item# 7205S ships with a standard size PCI bracket
• Item# CA203, 36” DB-25F cable terminates to two DB-9M connectors
• Sealevel Software CD
Factory Default Settings
The ULTRA COMM+2.LPCI factory default settings are as follows:
Port # Electrical Specification
Port 1 RS-232
Port 2 RS-232
To install the ULTRA COMM+2.LPCI using factory default settings, refer to Installation instructions.
For your reference, record installed ULTRA COMM+2.LPCI settings below:
Port # Electrical Specification
Port 1
Port 2
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Installation
Card Setup
In all cases J1x refers to settings for the first port and J2x refer to settings for the second port.
RS-485 Enable Modes
RS-485 is ideal for multi-drop or network environments. RS-485 requires a tri-state driver that will allow the
electrical presence of the driver to be removed from the line. The driver is in a tri-state or high impedance condition
when this occurs. Only one driver may be active at a time and the other driver(s) must be tri-stated. The output
modem control signal Request To Send (RTS) is typically used to control the state of the driver. Some
communication software packages refer to RS-485 as RTS enable or RTS block mode transfer.
One of the unique features of the ULTRA COMM+2.LPCI is the ability to be RS-485 compatible without the need
for special software or drivers. This ability is especially useful in Windows, Windows NT, and OS/2 environments
where the lower level I/O control is abstracted from the application program. This ability means that the user can
effectively use the ULTRA COMM+2.LPCI in a RS-485 application with existing (i.e. standard RS-232) software
drivers.
Headers J1B and J2B are used to control the RS-485 mode functions for the driver circuit. The selections are ‘RTS’
enable (silk-screen ‘RT’) or ‘Auto’ enable (silk-screen ‘AT’). The ‘Auto’ enable feature automatically
enables/disables the RS-485 interface. The ‘RTS’ mode uses the ‘RTS’ modem control signal to enable the RS-485
interface and provides backward compatibility with existing software products.
Position 3 (silk-screen ‘NE’) of J1B and J2B is used to control the RS-485 enable/disable functions for the receiver
circuit and determine the state of the RS-422/485 driver. The RS-485 ‘Echo’ is the result of connecting the receiver
inputs to the transmitter outputs. Every time a character is transmitted, it is also received. This can be beneficial if
the software can handle echoing (i.e. using received characters to throttle the transmitter) or it can confuse the
system if the software does not. To select the ‘No Echo’ mode select silk-screen position ‘NE’.
For RS-422 compatibility remove the jumpers at J1B and J2B.
Examples on the following pages describe all of the valid settings for J1B and J2B.
Interface Mode Examples J1B – J2B
ATRTNE
Figure 1- Headers J1B and J2B, RS-422
ATRTNE
Figure 2 - Headers J1B and J2B, RS-485 ‘Auto’ Enabled, with ‘No Echo’
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Installation
ATRTNE
Figure 3 - Headers J1B and J2B, RS-485 ‘Auto’ Enabled, with ‘Echo’
ATRTNE
Figure 4 - Headers J1B and J2B, RS-485 ‘RTS’ Enabled, with ‘No Echo’
ATRTNE
Figure 5 - Headers J1B and J2B, RS-485 ‘RTS’ Enabled, with ‘Echo’
Address and IRQ selection
The ULTRA COMM+2.LPCI is automatically assigned I/O addresses and IRQs by your motherboard BIOS. Only
the I/O address may be modified by the user.
Adding or removing other hardware may change the assignment of I/O addresses and IRQs.
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