Omron CS1W-RPT01, CVM1-CLK21, CJ1W-CLK21-V1 8 RUN, Stop, Data command The data to be written

Commands and Responses for C200HX/HG/HE and CQM1H-series PLCs Section 6-6

No. of bytes (command and response): The command specifies the num- ber of bytes of data to write. This must be an even number of 07C6 (Hex) or smaller (1990 or smaller in decimal). The number of bytes actually written will be returned in the response. The leftmost bit (bit 15) is used to indicate the completion of the command. It must be turned ON (1) when writing data to the last address in the program area so that the PLC can generate an index*. To write only an index marker, specify 8000 (Hex) for the number of bytes.

*Generating an index is a process that enables a program to be used by the PLC after it has been written. A program will not run properly if the index has not been generated.

Bit 15 OFF (0): Without last word data

Bit 15 ON (1): With last word data

Bits 0 to 14: No. of bytes written

Bits 0 to 7 (second byte)

Bits 8 to 15 (first byte)

Data (command): The data to be written.

6-6-8 RUN

Changes the PLC to MONITOR or RUN mode, enabling the PLC to execute its program.

Command Block

		04	01	00	00
				Program
		Command					Mode
		code		no.
Response Block
		04	01
		Command		Response
		code		code
Parameters	Program no. (command and response): Set to 0000 (Hex).
	Mode (command): As follows:
		02 (Hex):				MONITOR mode
		04 (Hex):				RUN mode

Note If the mode is not specified, the PLC will go to MONITOR mode.

6-6-9 STOP

Changes the PLC to PROGRAM mode, stopping program execution.

Command Block

04 02

Command code

218