SAMWONTECH
1th Edition of TEMP2000_Series IM : Dec. 15. 2008 Page 5 / 63
4. Wiring for Communication
Connector wiring between TEMP2500 and network system depends on communication interface setting
(RS232C/RS485)
.
█ Modular Connector Pin-Mapping for COM2 port
█ Description of Modular Connector Pin-Mapping for COM2 port
RS232C RS485
PIN no.
Signal Symbol Signal Symbol
1 Transmit Data TxD Receive/Transmit Data - RTX-
2 Receive Data RxD Receive/Transmit Data + RTX+
3 Signal Ground SG Signal Ground SG
4 - - - -
5 - - - -
6 - - - -
6
5
4
3
2
1
SG
RxD
TxD
6
5
4
3
2
1
SG
RTX+
RTX-
RS485
RS232C
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