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External Interfaces
• For instructions on how to connect to other devices, always refer to the "GP-Pro EX
Device/PLC Connection Manual".
• Always connect the #5 SG (Signal Ground) of the GP unit to the connected device,
especially if the connected device is also not isolated. Failure to do so may damage
the RS232C/RS422/RS485 circuit.
COM1
Recommended Cable Connector XM2D-0901 <made by OMRON Corp.>
Recommended Jack Screw
Recommended Cable Cover
Fitting fastener
Pin #
Signal Name
1
CD
2
RD(RXD)
3
SD(TXD)
4
ER(DTR)
5
SG
6
DR(DSR)
7
RS(RTS)
8
CS(CTS)
9
CI(RI)/VCC
Shell
FG
*1 The RI/VCC selection for Pin #9 is switched via software. The VCC output is not protected against
overcurrent. To prevent damage or unit malfunctions, use only the rated current.
XM2Z-0073 <made by OMRON Corp.>
XM2S-0913 <made by OMRON Corp.>
#4-40 (UNC)
RS232C
Meaning
Carrier Detect
Receive Data
Send Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request to Send
Clear to Send
Called status display/
+5V ±5% Output 0.25A
Frame Ground
(Common with SG)
Signal Name
RDA
RDB
SDA
ERA
SG
CSB
SDB
CSA
ERB
*1
FG
5
RS422/RS485
Meaning
Receive Data A(+)
Receive Data B(-)
Send Data A(+)
Data Terminal Ready A(+)
Signal Ground
Clear to Send B(-)
Send Data B(-)
Clear to Send A(+)
Data Terminal Ready B(-)
Frame Ground
(Common with SG)
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