Omron NT631C manual Port selection selector switch Set this to RS-422A

Connecting to the Host’s RS-422A/485 Port Section 5-2

Setting the Rear Switches

• I/O port selection (selector switch) Set this to RS-422A.

I/O port	8
RS-422A	7
RS-232C	6	SW1
	5
Synchronization	4
	3
Internal	2
	1
External
	ON
Terminator	8
OFF	7
	6
ON		SW2
	5
CTS	4
	3
0 V	2
External	1
	ON

•Unit # (DIP SW1)

Set SW1-1 to SW1-5 to OFF (0).

•Synchronization (selector switch) Set this to Internal.

•Communications speed

(DIP SW2-1 to SW2-4)

Set these switches to 0010 to select 19200 bps.

Set these switches to 1010 to select 9600 bps.

(0: OFF 1: ON)

•1-to-1/1-to-N selection (DIP SW2-6) Set SW2-6 to OFF (0) (1-to-N).

•Instruction level (DIP SW2-7, SW2-8) Set these switches to ON (1). (Levels 1, 2, and 3 are enabled.)

•CTS selection (selector switch) Set this always to 0 V (ON).

•Terminator setting (selector switch) Set this switch to ON.

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