User's Guide

Contents
INTRODUCTION..........................................................................................................1
OVERVIEW ...................................................................................................................1
WHAT’S INCLUDED....................................................................................................1
FACTORY DEFAULT SETTINGS................................................................................1
CARD SETUP ................................................................................................................2
RS-485 ENABLE MODES.............................................................................................2
LINE TERMINATION AND RECEIVER ECHO OFF/ON.............................................4
OPERATING SYSTEM INSTALLATION (FOR WINDOWS USERS)..............6
RS-422/RS-485 Four Wire Master/RS-485 Two Wire Auto Mode
Installation............................................................................................................6
RS-485 Two-Wire and RS-485 Four-Wire Slave Installation ...................... 7
Other Operating Systems....................................................................................8
SYSTEM INSTALLATION.........................................................................................9
TECHNICAL DESCRIPTION...................................................................................10
CONNECTOR PIN ASSIGNMENTS............................................................................10
RS-232 Signals (DB-25 Female).....................................................................10
RS-422/485 Pin Assignments (6 Position Screw Terminal).......................10
SPECIFICATIONS......................................................................................................11
ENVIRONMENTAL SPECIFICATIONS......................................................................11
MANUFACTURING....................................................................................................11
MEAN TIME BETWEEN FAILURES (MTBF).........................................................11
PHYSICAL DIMENSIONS...........................................................................................11
APPENDIX A - TROUBLESHOOTING..................................................................12
APPENDIX B - HOW TO GET ASSISTANCE......................................................13
APPENDIX C - ELECTRICAL INTERFACE..........................................................14
RS-232.........................................................................................................................14
RS-422.........................................................................................................................14
RS-485.........................................................................................................................15
APPENDIX D - GROUND LOOP PHENOMENON..............................................16
WHAT IS GROUND LOOP?.......................................................................................16
CABLING RECOMMENDATIONS..............................................................................16
APPENDIX E - ASYNCHRONOUS COMMUNICATIONS.................................17