Omron NT631C manual CS/CJ-series CPU Unit CS1G/H-CPU@@-EV1, CS1G/H/D-CPU@@H

Connecting to the RS-232C Port at the Host Section 4-1

CS/CJ-series CPU Unit: CS1G/H-CPU@@-E(V1), CS1G/H/D-CPU@@H

CJ1G/M-CPU@@, CJ1G/H-CPU@@H

Connect to the built-in RS-232C port of the CPU Unit, or the RS-232C port of the Communications Board. Note that the connection to a peripheral port must be made via an RS-232C adapter (CS1W-CN118) specially designed for connecting to a peripheral port.

PLC Setup

When connecting to a CS/CJ-series CPU Unit, set the following communica- tions conditions for the PLC Setup area. Since the settings shown below are the PLC default settings for the CPU Unit, no change to the PLC Setup is nec-

essary as long as the communications speed is maintained at 9600 bps.

Item	Setting at Host
Communications speed	Set the same speed as set at the NT631/NT631C(*1)
Stop bits	2 stop bits
Parity	Even
Data length	ASCII 7 bits
Unit No. for the host link	00

*1 Set the host link communications speed at 9600 bps or 19200 bps with the memory switch at the NT631/NT631C. For details, refer to 6-7-2 Setting the Host Link Method (page 155).

When the communications speed is set to 19200 bps., the PLC Setup of the CPU Unit need to be changed.

Either set the PLC Setup directly from a Programming Device (Programming

Console), or transmit the PLC Setup made at a Programming Device (CX-

Programmer) to the CPU Unit.

For details on the PLC Setup, refer to the SYSMAC CS Series Operation

Manual (W339) or the SYSMAC CJ Series Operation Manual (W393).

Using the CPU Unit’s Built-in RS-232C Port

Word #	Writing Value	Settings
160	8000	Host link mode, data length 7 bits,
		2 stop bits, even parity
161	0000	Communications speed: 9600 bps.
	0007	Communications speed: 19200 bps.
166	0000	Unit #00

Using the CPU Unit’s Peripheral Port

Word #	Writing Value	Settings
144	8000	Host link mode, data length 7 bits,
		2 stop bits, even parity
145	0000	Communications speed: 9600 bps.
	0007	Communications speed: 19200 bps.
150	0000	Unit #00

Setting the Front Switches

Set the CPU Unit’s DIP switches to 4 or 5 in accordance with the port NT631/ NT631C is connected to. An example of a CS-series CPU Unit is shown below.

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