Impulse 3087 User Manual
COMM+2/EX
Users Manual
Part # 3087
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
ADDRESS SELECTION .............................................................................................................................. 2
PORT ENABLE / DISABLE ......................................................................................................................... 3
INTERFACE SELECTION............................................................................................................................ 3
RS-422/485.......................................................................................................................................... 3
RS-232................................................................................................................................................. 3
IRQ SELECTION ...................................................................................................................................... 3
INTERRUPT MODES ................................................................................................................................. 4
HEADERS E3 AND E4 ..............................................................................................................................5
INSTALLATION ......................................................................................................................... 6
OPERATING SYSTEM INSTALLATION........................................................................................................ 6
Windows 95/98/ME/NT/2000/XP....................................................................................................... 6
Linux ................................................................................................................................................... 7
QNX .................................................................................................................................................... 7
PHYSICAL INSTALLATION ........................................................................................................................ 7
TECHNICAL DESCRIPTION ...................................................................................................... 8
FEATURES ............................................................................................................................................... 8
LINE TERMINATION ................................................................................................................................. 8
CONNECTOR PIN ASSIGNMENTS .............................................................................................................. 8
RS-232 (Male DB9) ............................................................................................................................ 8
RS-422/485 (Male DB9) ..................................................................................................................... 8
SPECIFICATIONS ...................................................................................................................... 9
ENVIRONMENTAL SPECIFICATIONS.......................................................................................................... 9
MANUFACTURING ................................................................................................................................... 9
POWER CONSUMPTION ............................................................................................................................ 9
PHYSICAL DIMENSIONS ........................................................................................................................... 9
APPENDIX A - TROUBLESHOOTING ...................................................................................... 10
PPENDIX B - HOW TO GET ASSISTANCE............................................................................ 11
A
APPENDIX C - ELECTRICAL INTERFACE .............................................................................. 12
RS-232.................................................................................................................................................. 12
RS-422.................................................................................................................................................. 12
RS-485.................................................................................................................................................. 12
APPENDIX D - ASYNCHRONOUS COMMUNICATIONS ............................................................ 13
A
PPENDIX E - SILK-SCREEN ................................................................................................. 14
APPENDIX F - COMPLIANCE NOTICES .................................................................................. 15
FEDERAL COMMUNICATIONS COMMISSION STATEMENT ....................................................................... 15
EMC DIRECTIVE STATEMENT ............................................................................................................... 15
WARRANTY............................................................................................................................ 16
© Sealevel Systems, Inc.
SL9140 Revision 7/2006
Sealevel Systems, Incorporated. All rights reserved.
Introduction
Introduction
Overview
The Sealevel COMM+2/EX provides the PC with 2 asynchronous serial ports providing a versatile interface field
selectable as RS-232 for modems, printers and plotters, as well as RS-422/485 for industrial automation and control
applications.
What’s Included
The COMM+2/EX is shipped with the following items. If any of these items are missing or damaged, contact the
supplier.
• COMM+2/EX Serial I/O Adapter
Factory Default Settings
The COMM+2/EX factory default settings are as follows:
To install the COMM+2/EX using factory default settings, refer to
Installation on page 6.
• Sealevel Software
Port # Base Address IRQ Electrical Interface
Port 1 280 5 RS-422
Port 2 288 10 RS-422
For your reference, record installed COMM+2/EX settings below:
Port # Base Address IRQ Electrical Interface
Sealevel Systems COMM+2/EX Page 1
Card Setup
Card Setup
The COMM+2/EX contains several jumper straps which must be set for proper operation.
Address Selection
Each port on the COMM+2/EX occupies eight consecutive I/O locations. A DIP-switch is used to set the base
address for these locations. Be careful when selecting the base address as some selections conflict with existing
ports. The following table shows several examples that typically do not cause a conflict. SW1 sets the I/O address for
port 1 of the COMM+2/EX and SW2 sets the address for port 2.
Address Binary Switch Position Setting
Hex A9 A0 1 2 3 4 5 6 7
280-287 1010000XXX Off On Off On On On On
2A0-2A7 1010100XXX Off On Off On Off On On
2E8-2EF 1011101XXX Off On Off Off Off On Off
2F8-2FF 1011111XXX Off On Off Off Off Off Off
3E8-3EF 1111101XXX Off Off Off Off Off On Off
300-307 1100000XXX Off Off On On On On On
328-32F 1100101XXX Off Off On On Off On Off
3F8-3FF 1111111XXX Off Off Off Off Off Off Off
Figure 1 - Address Selection Table
The following illustration shows the correlation between the DIP-switch setting and the address bits used to
determine the base address. In the example below, address 300 is selected as a base. Address 300 in binary is XX11
0000 0XXX where X = a non-selectable address bit.
ON
12345 6 78
Figure 2 - DIP-Switch Illustration
Note: Setting the switch ‘On’ or ‘Closed’ corresponds to a ‘0’ in the address, while leaving it ‘Off’ or ‘Open’
corresponds to a ‘1’.
Refer to Appendix A for common address contentions.
ENA3A9
Sealevel Systems COMM+2/EX Page 2
Card Setup
Port Enable / Disable
Each port on the COMM+2/EX can be enabled or disabled with switch position 8 on the DIP-switch. The port is
enabled with the switch ‘On’ or ‘Closed’ and disabled when ‘Off’ or ‘Open’. If any port is disabled, be sure to
disable the interrupt request for that port by removing the IRQ jumper.
Interface Selection
RS-422/485
To select the RS-422/485 mode of operation install dip shunts in sockets found at E6 and E7. E6 sets Port 1 and E7
sets Port 2.
RS-232
To select the RS-232 mode of operation install dip shunts in sockets found at E5 and E8. E5 sets Port 1 and E8 sets
Port 2.
IRQ Selection
Headers E1 and E2 select the interrupt request for each serial port (E1 - Port 2, E2 - Port 1). If COM1: is selected,
the corresponding jumper must be on the IRQ4 setting. If COM2: is selected, the corresponding jumper must be on
IRQ3.
E1
2/9 3 4 5 7 10 11 12 15
E2
2/9 3 4 5 7 10 11 12 15
Figure 3 - Header E1 and E2, IRQ Selection
Any two or more ports can share a common IRQ, provided a polling driver is used, by placing the jumpers on the
same IRQ setting and setting the appropriate selections at E3. The following examples show the setup if a polling
driver is used. NOTE: Windows does not provide a polling driver. Consult your particular software for IRQ
selection. If no interrupt is desired, remove the jumper.
Sealevel Systems COMM+2/EX Page 3
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