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9-23

9 PLC Setup

CJ2 CPU Unit Software User’s Manual

9-3 PLC Setup Settings

9-3-6 Serial Port Settings

The following parameters are valid when pin 5 on the DIP switch on the CPU Unit is OFF (default).

• Serial Port Settings

Set the serial port settings in the PLC Setup when you need to change these settings from the

defaults. Specify the frame format when no-protocol mode is selected.

The port settings can also be changed with STUP(237). The Serial Port Settings Changing Flag

(A619.02) is turned ON when STUP(237) is executed and it is turned OFF when the port settings

have been changed.

When pin 5 of the DIP switch on the front of the CPU Unit is ON, the CPU Unit automatically detects

the communications parameters of a Programming Device (including a Programming Console) con-

nected to the RS-232C port. Those automatically detected parameters are not stored in the PLC

Setup.

9-3-6 Serial Port Settings

Communications Settings

Parameter Settings Default Function

Related flags and

words

Communica-

tions Settings

• Standard (9600: 1, 7, 2, E):

Standard settings

• Custom: Any setting

Standard The standard settings (9600: 1, 7, 2, E)

are for Host Link Mode, 1 start bit, 7

data bits, even parity, 2 stop bits, and a

baud rate of 9,600 bps.

Set custom settings to use any other

communications settings.

A619.02

(Serial Port Settings

Changing Flag)

Omron CJ2 CPU UNIT SOFTWARE User Manual

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