Specifications

Pin Arrangement Pin #

Signal

Name

Meaning

1 FG Frame Ground

2 SD Send Data (RS-232C)

3 RD Receive Data (RS-232C)

4 RS Request to Send (RS-232C)

5 CS Clear to Send (RS-232C)

6 DR Data Set Ready (RS-232C)

7 SG Signal Ground

8 CD Carrier Detect (RS-232C)

9 TRMX Termination (RS-422)

10 RDA Receive Data A (RS-422)

11 SDA Send Data A (RS-422)

12 NC No Connection(Reserved)

13 NC No Connection(Reserved)

14 VCC 5V±5% Output 0.25A

15 SDB Send Data B (RS-422)

16 RDB Receive Data B (RS-422)

17 RI Ring Indicate (RS-232C)

18 CSB Clear to Send B (RS-422)

19 ERB Enable Receive B (RS-422)

20 ER Enable Receive (RS-232C)

21 CSA Clear to Send A (RS-422)

22 ERA Enable Receive A (RS-422)

23 NC No Connection(Reserved)

24 NC No Connection(Reserved)

25 NC No Connection(Reserved)

4 Interfaces

Recommended Connector: Dsub 25 pin plug XM2A-2501 <made by OMRON Corp.>

Recommended Cover : Dsub 25 pin Cover XM2S-2511 <made by OMRON Corp.>

Jack Screw XM2Z-0071 <made by OMRON Corp.>

Recommended Cable : CO-MA-VV-SB5P x 28AWG

• This GP unit’s serial port is not isolated. When the host (PLC) unit is

also not isolated, and to reduce the risk of damaging the RS-422 circuit,

be sure to connect the #7 SG (Signal Ground) terminal.

• Pin #14 (VCC) DC 5V Output is not protected. To prevent damage or unit

malfunction, use only the designated level of current.

• Inside the GP unit, the SG (Signal Ground) and FG (Frame Ground) ter-

minals are connected to each other.

• When connecting an external device to the GP with the SG terminal,

ensure that no short-circuit loop is created when you setup the system.



 Serial Interface (HOST-I/F)

This interface is used to connect the GP to the host (PLC), via an RS-232C or RS-

422 cable.