AVE RegCom-Pro Operation Manual page 75

APPENDIX J
For some installations exceptional long runs are required, then RS-232 can not support for is normally
limited to about 100 ft. In this case one would convert the RS-232 to RS-485 which can be extended
up to about 3000 ft. Then on the other end another converter would convert back to RS-232. When
using the RegCom-Pro this additional converter is not required for already has built in RS-485
compatibility. However termination for the POS / Cash Register port is via JP2 internally to the RegCom-
Pro is required.
Jumper Setting
JP1 OPEN/CLOSE
JP2 OPEN/CLOSE
JP4 CLOSE 1-2
JP4 CLOSE 2-3
JP5 CLOSE 1-2
JP5 CLOSE 2-3
JP6 CLOSE 1-2
JP6 CLOSE 2-3
JP7 CLOSE 1-2
JP7 CLOSE 2-3
Figure 134: RS-232 to RS-485/422 Converter PCB
Jumper Setting for RS422
JP1 CLOSE
JP2 CLOSE
JP4 CLOSE 1-2
JP5 CLOSE 1-2
JP6 CLOSE 2-3
JP7 CLOSE 2-3
DB9M Pin Out
1 —————————— N/C
2 —————————— RXD/TXD
3 —————————— RXD/TXD
4 —————————— DTR True
5 —————————— GND
6 —————————— N/C
7 —————————— RTS
8 —————————— N/C
9 —————————— 12VDC Input
RegCom-Pro POS / Cash Register Interface
RS485 / RS-422 Transmit Termination On/Off 120 Ohm
RS-422 Receive Termination On/Off 120 Ohm
RS-232 TXD to DB9M Pin 3
RS-232 TXD to DB9M Pin 2
RS-232 RXD to DB9M Pin 2
RS-232 RXD to DB9M Pin 3
Enable RS-485
Enable RS-422
Enable RS-485
Enable RS-422
RS-422 Transmit
Termination On 120 Ohm
RS-422 Receive
Termination On 120 Ohm
RS-232 TXD to DB9M Pin 3
RS-232 RXD to DB9M Pin 2
Enable RS485
Enable RS485
RS-232 to RS-422/RS-485 Converter
Jumper Setting for RS485 (Default )
JP1 CLOSE
JP2 OPEN
JP4 CLOSE 1-2
JP5 CLOSE 1-2
JP6 CLOSE 1-2
JP7 CLOSE 1-2
Figure 135: RS-422/485
Connector of the RS-232 to
RS-422/485 Converter.
75
RS-485
Termination On 120 Ohm
RS-422 Receive
Termination Off 120 Ohm
RS-232 TXD to DB9M Pin 3
RS-232 RXD to DB9M Pin 2
Enable RS-485
Enable RS-485
Figure 136: RS-232 Con-
nector of the RS-232 to RS-
422/485 Converter.