User Manual

iv Table of Contents Manual Documentation Number 3PCIoUx-1008
RS-422/485 SIGNAL DESIGNATIONS AND DB-9 PINOUT .......................................... 59
RS-422/485 Signal Designations ......................................................................... 60
RS-422/485 DIFFERENTIAL SIGNALS ........................................................................ 60
RS-422 OPERATION .................................................................................................. 61
RS-422 Limitations ............................................................................................... 61
RS-485 OPERATION .................................................................................................. 61
Send Data Control ............................................................................................... 62
RS-485 TERMINATION RESISTORS ............................................................................ 63
RS-485 NETWORK BIASING ...................................................................................... 63
2-WIRE RS-485 CONNECTIONS ................................................................................ 65
2-Wire RS-485 Mode: .......................................................................................... 65
4-WIRE RS-422 AND RS-485 CONNECTIONS ............................................................ 65
RS-422 Point to Point Connection ....................................................................... 65
RS-422 Point to Multipoints Connection ............................................................. 66
4-Wire RS-485 Connection .................................................................................. 66
CHAPTER 9: TROUBLESHOOTING MIPORT CARDS .................................... 68
STARTING UP ............................................................................................................ 68
CHECKING CONNECTIONS ......................................................................................... 68
RS-232/422/485 Operation .................................................................................. 68
RS-232 Operation ................................................................................................ 68
RS-422/485 Operation ......................................................................................... 69
CHECKING THE MIPORT CARD ................................................................................. 69
Support ................................................................................................................. 71
APPENDIX A: DIP SWITCH/MODE SETTINGS .................................................. 1
SETTING THE DIP SWITCHES ON RS-232/422/485 PORTS ........................................... 1
DIP Switch 1 (RS-232/422/485 ports) .................................................................... 1
DIP Switch 2 (RS-232/422/485 ports) .................................................................... 1
DIP Switch 3 (RS-232/422/485 ports) .................................................................... 2
SETTING THE DIP SWITCHES ON RS-422/485 ONLY PORTS ........................................ 2
APPENDIX B: CONNECTOR PINOUTS ............................................................... 1
RS-232 PINOUTS ........................................................................................................ 1
RS-422/485 PINOUTS ................................................................................................. 2
APPENDIX C: TROUBLESHOOTING WITH COMTEST ................................. 1
COMTEST FEATURES .................................................................................................. 1
INSTALLING COMTEST ............................................................................................... 2
LOOPBACK TESTING WITH COMTEST ......................................................................... 2
APPENDIX D: DECLARATION OF CONFORMITY STATEMENT ................ 5