Omron NT631C manual C200HX/HG/HE-ZE

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

Wiring for a Memory Link Connection

Prepare the adapter cable while referring to the diagram shown below.

	NT-AL001 side
1	6	Abbreviation	Pin number
		FG	Connector
			hood
		−	1
	RS-232C	SD	2
		RD
	connector		3
		RS	4
		CS	5
		+5V	6
		−
		−	8
		SG	9
	(9-pin type)			Shielding wire
5	9	No +5 V output is at the host side

Host side

Abbreviation

Connector hood

SD

RS-232C

RD connector

RS

CS

+5V

SG

A +5 V output is present at the host side

Since it is necessary to input a voltage of +5 V to the number 6 pin of NT- AL001, supplying a voltage of 5 V from the host or an external voltage supply for NT-AL001 is required.

5-1-3 1:N Connection between RS-422A/485 at the PT and RS-232C at the Host

The connection method in which the RS-422A/485 ports of multiple NT631/ NT631Cs are connected to the RS-232C port of one host in a 1:N connection is described here.

An RS-232C/RS-422A Adapter (NT-AL001) is used to convert between the

RS-232C and RS-422A/485 communications methods.

RS-422A/485 cable (max. total length: 500 m)

NT631/NT631C

NT631/NT631C

Host Link Unit or CPU Unit

CS/CJ-series PLC,

C200HX/HG/HE(-Z)E

RS-232C/RS-422A

convertor unit9-pin connector (NT-AL001)

	RS-232C cable with
	connectors
RS-422A terminal	9-pin connector
block

Serial port B (RS-422A/485, terminal block)

NT631/NT631C

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