Contec CONPROSYS Alpha Series Reference Manual page 29

Example setting of the connecting cable and CPS-COM-2PD
Setting of the connecting cable and CPS-COM-2PD is dependent on the PLC to which you are
connecting.
Cable Connection
Pin assignment
CPS-COM-2PD
Pin Number Signal Name
1 GND
2 RxD +
3 RxD -
4 TxD+
5 TxD -
Full-duplex Setting
Data Transfer Mode
Full Duplex
SW3 sets the mode for channel 1, SW4 for channel 2.

Terminator Setup
SW1 sets the mode for channel 1, SW2 for channel 2.

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Set the Computer Network
CPSA-PCB100 Reference Manual
Description
Signal ground
Received data (+)
Received data (-)
Transmitted data (+)
Transmitted data (-)
- Self-loop RTS, CTS
Setup when using the internal terminator
ON
1 2 3 4
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Setting
CPS-COM-2PD
SW3
SW4
CPS-COM-2PD
SW1
SW2
RTS
CTS