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Specifications of Serial Interface COM2
Introduction
NOTE: For instructions on how to connect to other devices, always refer to the "GP-
Pro EX Device/PLC Connection Manual".
The serial port is not isolated. The SG (signal ground) and FG (frame ground)
terminals are connected inside the GP unit.
Serial Interface COM2
GP-4601T: D-Sub 9 pin plug connector via an RS-422/485 cable.
Interfit bracket is #4-40 (UNC).
Recommendations:
ELECTRIC SHOCK
When using the SG terminal to connect an external device to the panel:
Verify that a short-circuit loop is not created when you set up the system.
Connect the #5 SG terminal to remote equipment when the host (PLC) unit is
not isolated. Connect the #5 SG terminal to a known reliable ground connection
to reduce the risk of damaging the circuit.
Failure to follow these instructions will result in death or serious injury.
Pin Connection
5
9
6
1
(GP unit side)
Cable Connector: XM2D-0901 manufactured by OMRON Corporation.
Cable Cover: XM2S-0913 manufactured by OMRON Corporation.
Jack Screw (#4-40 UNC): XM2Z-0073 manufactured by OMRON Corporation.
DANGER
Pin
RS-422/RS-485
No.
Signal Name
1
RDA
2
RDB
3
SDA
4
ERA
5
SG
6
CSB
7
SDB
8
CSA
9
ERB
Shell
FG
GP4000 Series Hardware Manual
Direction
Meaning
Input
Receive Data A (+)
Input
Receive Data B (-)
Output
Send Data A (+)
Output
Data Terminal Ready A (+)
-
Signal Ground
Input
Send Possible B (-)
Output
Send Data B (-)
Input
Send Possible A (+)
Output
Data Terminal Ready B (-)
–
Frame Ground (Common
with SG)
127
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