Omron manual Connection between NT631/NT631C Units RS, Connecting an NT-AL001 and Host

Connecting to the Host’s RS-232C Port Section 5-1

Connection between NT631/NT631C Units (RS- 485)

The relay terminal board is not included in the figure below. Insert a relay ter- minal board so as to achieve the wiring configuration indicated below.

NT631/NT631C NT-AL001 Host

	RS-485
:
	NT631/NT631C side			NT631/NT631C side
RDA		Abbreviation Short-circuit tool		Abbreviation		RDA
			:	RDA (-)
		RDA (-)
TRM		TRM		TRM		TRM
RDB	RS-422A/	RDB (+)		RDB (+)	RS-422A/	RDB
					485
	485			SDA (-)	terminal
	terminal	SDA (-)
					block
SDA	block					SDA
		SDB (+)		SDB (+)
SDB		RSA (-)		RSA (-)		SDB
		RSB (+)
RSA				RSB (+)		RSA
		Functional		Functional
		ground	Shielding wire	ground
RSB						RSB
24V						24V
+DC						+DC

*Short TRM and RDA terminals of the NT631/NT631C at the end of the RS- 485 cable (* marked in the above figure) using the short-circuit tool sup- plied with the NT631/NT631C.

For details on handling shield wires, refer to 5-2-8 Handling the Shield on RS- 422A/485 Cables on page 125.

Connecting an NT-AL001 and Host

NT631/NT631C	NT-AL001		Host
		RS-232C

Wiring when connecting a CS-series Serial Communications Board, CS/

CJ-series Serial Communications Unit, CQM1H Serial Communications

Board, or C-series C200HX/HG/HE(-Z)E Communications Board

Applicable Units:

CS1W-SCU21(-V1)

CJ1W-SCU21(-V1)/CJ1W-SCU41(-V1)

CS1G-CPU42/43/44/45-E(V1)

CS1H-CPU63/64/65/66/67-E(V1)

CS1G-CPU42H/43H/44H/45H

CS1H-CPU63H/64H/65H/66H/67H

CS1D-CPU65H/67H (See note.)

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