Connecting to the RS-232C Port at the Host

Section 4-1

Setting the Front Switches

I/O port selector switch RS-232C

RS-422A

I/O port selection (selector switch) Set this to RS-232C.

System setting (DIP SW4)

To effect the existing DIP switch settings, set SW4 to ON.

To effect the existing PLC Setup, set SW4 to OFF.

Note

For CPU Units manufactured before or during June 1995 (lot No. @@65), the existing DIP switch settings differ from the existing PLC Setup as follows.

-DIP switch settings:

2,400 bps, 1 stop bit, even parity, 7 bit data length

-PLC Setup:

9,600 bps, 2 stop bits, even parity, 7 bit data length

For CPU Units manufactured from July 1995 onward (lot No. @@75), the values specified in the DIP switch settings also are 9,600 bps and 2 stop bits.

C-series C200HS, C200HX/HG/HE(-Z)E, CPM1, CPM2A, CPM2C, CQM1, CPM1H CPU Units, SRM1

The connection method depends upon the model of PLC being used, as shown in the following table.

PLC model

Connection method

 

 

C200HS, CQM1

Connect to the CPU Unit’s built-in RS-232C port.

 

 

C200HX/HG/HE(-Z)E

Connect to the CPU Unit’s built-in RS-232C port.

 

Connect to one of the RS-232C ports (port A or port B) on a

 

Serial Communications Board.

 

 

CQM1H

Connect to the CPU Unit’s built-in RS-232C port.

 

Connect to the peripheral port through a CS1W-CN118

 

Connecting Cable.

 

Connect to the RS-232C port (port 1) on a Serial Communi-

 

cations Board.

 

 

CPM1

Connect to the peripheral port through a CPM1-CIF01 RS-

 

232C Adapter.

 

 

CPM2A, SRM1

Connect to the CPU Unit’s built-in RS-232C port.

 

Connect to the peripheral port through a CPM1-CIF01 RS-

 

232C Adapter.

 

 

CPM2C

Connect to the CPU Unit’s RS-232C port or the peripheral

 

port through a Connecting Cable (CPM2C-CN111, CS1W-

 

CN118, or CS1W-CN114).

 

(The CPM2C-CN111 splits the Unit’s Communications Port

 

into a RS-232C port and a peripheral port. A CPM1-CIF01

 

RS-232C Adapter is also required to connect to this periph-

 

eral port.)

 

 

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Omron NT631C manual PLC model Connection method, CQM1H, CPM2A, SRM1