Omron FQ2-S Series User Manual page 56

Wiring
The maximum cable length is 15m.
• RS-232C
Connection Method
Align the connector with the socket and press it straight into place, then fix it with the screws on both sides of
the connector.
Important
Turn OFF the power supply before connecting or disconnecting a Cable. Peripheral devices may be damaged if the
cable is connected or disconnected with the power ON.
54
Wiring
Controller
Signal name Pin No.
RD 2
SD 3
GND 5
Use a shielded cable.
External device to be connected
Pin No. Signal name
* RD
* SD
* GND
RS/CS control cannot be used.
FQ2-S/CH User's Manual