10
Serial Interfaces
COM1
This interface is used to connect an RS-232C cable. A D-sub 9-pin plug connector is used.
COM2
This interface is used to connect an RS-232C cable. A D-sub 9-pin plug connector is used.
Interfaces
• The PS-G unit’s serial port is not isolated. When the host (PLC) unit is
also not isolated, be sure to connect the #5 SG (Signal Ground)
terminal to reduce the risk of damaging the RS-232C circuit.
• Inside the PS-G unit, the SG (Signal Ground) and FG (Frame Ground)
terminals are connected.
• When connecting an external device to the PS-G using the SG
terminal, be sure to check that no short-circuit loop is created when
you setup the system.
PS-G Connector
XM2C-0942-502LX <OMRON Co.>
Stacking Metal Fittings
#4-40 inch screws
Recommended cable
Connector
XM2D-0901 <OMRON Co.>
Recommended cable Cover XM2S-0913 <OMRON Co.>
Recommended Jack Screw XM2Z-0073 <OMRON Co.>
Pin Arrangement
Pin No.
RS-232C
Signal
Name
Direction
Meaning
1
CD
Input
Carrier Detect
2
RD(RXD)
Input
Receive Data
3
SD(TXD)
Output
Send Data
4
ER(DTR)
Output
Data Terminal Ready
5
SG
-
Signal Ground
6
DR(DSR)
Input
Data Set Ready
7
RS(RTS)
Output
Request to Send
8
CS(CTS)
Input
Send Possible
9
CI(RI)
Input
Called status display
Shell
FG
-
Frame Ground
(Common with SG)
PS-G Connector
XM2C-0942-502LX <OMRON Co.>
Stacking Metal Fittings
#4-40 inch screws
Recommended cable
Connector
XM2D-0901 <OMRON Co.>
Recommended cable Cover XM2S-0913 <OMRON Co.>
Recommended Jack Screw XM2Z-0073 <OMRON Co.>
5
1
9
6
