Omron NT31 NT31C manual C1000H/C2000H rack-mounting type C500-LK203

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

C1000H/C2000H rack-mounting type: C500-LK203
Setting the Rear Switches
			@ I/O port selection (selector switch)
			Set this to RS-422A.
5V supply
ON
OFF		8	SW1
I/O port		7	@ Unit #, parity, and transfer code
		6
RS-422A		5	(DIP SW1-1 to SW1-7)
RS-232C		4	Set SW1-1 to SW1-7 to OFF (0).
		3
Synchronization		2
		1
Internal
	ON
External			@ Synchronization (selector switch)
Terminator		8	Set this to Internal.
OFF		7
ON		6	SW2
		5	@ Communications speed
CTS		4	(DIP SW2-1 to SW2-4)
		3
0V		2	Set these switches to 0010 to select
External		1
	ON		19,200 bps.
			Set these switches to 1010 to select
			9,600 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 0V (ON).
			@ Terminator setting (selector switch)
			Set this switch to ON.

C200H/C1000H/C2000H CPU mounting type: 3G2A6-LK202-EV1

Setting the Rear Switches

SW1

SW2

SW3

@Unit #, parity, and transfer code (DIP SW1-1 to SW1-5)

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

*Parity is fixed at Even Parity. Transfer code is fixed at ASCII 7 data bits and 2 stop bits.

@Communications speed (DIP SW2-1 to SW2-4) Set these switches to 0010 to select 19,200 bps. Set these switches to 1010 to select 9,600 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.)

@Terminator setting (DIP SW3-1 to SW3-6) Set SW3-1, SW3-3, and SW3-5 to ON (1). Set SW3-2, SW3-4, and SW3-6 to OFF (0). (Set terminator ON.)

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