Specifications

Document Number 3PCI-0712m Table of Contents iii
Uninstalling the MIport Card .............................................................................. 25
Uninstalling the COM ports ................................................................................. 25
Removing INF and PNF Driver Files .................................................................. 25
CHAPTER 7: RS-232 CONNECTIONS/OPERATION......................................... 28
RS-232 MODE .......................................................................................................... 28
RS-232 SIGNAL DESIGNATIONS AND DB-9 PINOUT ................................................. 28
RS-232 Signal Designations................................................................................. 29
DTE AND DCE ......................................................................................................... 29
RS-232 SIGNAL LEVELS ........................................................................................... 29
HANDSHAKING ......................................................................................................... 30
RTS CONTROL IN RS-232 MODE.............................................................................. 30
CHAPTER 8: RS-422/485 CONNECTIONS/OPERATION ................................. 31
RS-422/485 MODE ................................................................................................... 31
RS-422/485 SIGNAL DESIGNATIONS AND DB-9 PINOUT .......................................... 31
RS-422/485 Signal Designations ......................................................................... 31
RS-422/485 DIFFERENTIAL SIGNALS ........................................................................ 32
RS-422 OPERATION .................................................................................................. 32
RS-422 Limitations............................................................................................... 33
RS-485 OPERATION .................................................................................................. 33
Send Data Control ............................................................................................... 33
RS-485 TERMINATION RESISTORS ............................................................................ 34
RS-485 NETWORK BIASING ...................................................................................... 34
2-WIRE RS-485 CONNECTIONS ................................................................................ 36
2-Wire RS-485 Mode: .......................................................................................... 36
4-WIRE RS-422 AND RS-485 CONNECTIONS ............................................................ 37
RS-422 Point to Point Connection ....................................................................... 37
RS-422 Point to Multipoint Connection ............................................................... 37
4-Wire RS-485 Connection .................................................................................. 38
CHAPTER 9: TROUBLESHOOTING MIPORT CARDS ...................................... 1
STARTING UP .............................................................................................................. 1
CHECKING CONNECTIONS ........................................................................................... 1
RS-232/422/485 Operation .................................................................................... 1
RS-232 Operation .................................................................................................. 1
RS-422/485 Operation ........................................................................................... 1
CHECKING THE MIPORT CARD ................................................................................... 2
APPENDIX A: DIP SWITCH/MODE SETTINGS .................................................. 4
SETTING THE DIP SWITCHES ON RS-232/422/485 PORTS ........................................... 4
DIP Switch 1 (RS-232/422/485 ports).................................................................... 4
DIP Switch 2 (RS-232/422/485 ports).................................................................... 4
DIP Switch 3 (RS-232/422/485 ports).................................................................... 5
SETTING THE DIP SWITCHES ON RS-422/485 ONLY PORTS ........................................ 5