RS-232C x 4


You can use four RS-232C ports by connecting the cable provided.

Product number PFXYP6MPR23P4
Asynchronous transmission RS-232C (not isolated) x 4
Data length 7 or 8 bits
Stop bit 1 or 2 bits
Parity None, odd or even
Data transmission speed 2,400...115,200 bps
Connector D-Sub 37 pin (plug, module side)
D-Sub 9 pin (plug, extended cable side)
Power consumption (max.) 0.58 W

The serial interface is not isolated. The SG (signal ground) and FG (frame ground) terminals are connected inside this product. When the serial interface connector is D-Sub, connect the FG wire to the shell.

When using the SG terminal to connect an external device to this product:
  • Verify that a ground loop is not created when you set up the system.
  • Connect the SG terminal to remote equipment when the external device is not isolated.
  • Connect the 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.
  • Do not put excessive stress on the communication ports of all connections.
  • Securely attach communication cables to the panel wall or cabinet.
  • Use a D-Sub 9 pin connector that has jack screws.
Failure to follow these instructions can result in injury or equipment damage.
NOTE: Use within the rated current.

Pin Assignment

D-Sub 9 pin plug connector

Extended cable side:

Pin No. RS-232C
Signal name Direction Description
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 (not isolated)
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)

Recommended jack screw is #4-40 (UNC).

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