Omron CQM1H-CLK21 SEND/RECV Flag Operations, Communications Instruction Response Codes, Example

Using the Message Service Section 6-3

SEND/RECV Flag Operations

•The Network Instruction Enabled Flag turns OFF during transmission or reception, and ON after the data transmission or reception has been com- pleted (regardless of whether an error occurs).

•The Network Instruction Error Flag retains its status until the next data transmission or reception.

•Even when there is an abnormal end, the Network Instruction Error Flag turns OFF when the next communications instruction is executed.

Example

Network Instruction Enabled Flag

Communications instruction (SEND/RECV/CMND)

Network Instruction Error Flag

Communications instruction response code

1
0
Instruction 1		Instruction 2		Instruction 3
being executed		being executed		being executed
1
0
00	00 end)(Normal	00	04 (Busy)	00	00 end)(Normal
Previous
end

Communications Instruction Response Codes

The status after a communications instruction has been executed is reflected in the words shown in the following table. During instruction execution, it becomes “00” or “0000,” and it is reflected here after the execution has been completed.

PLC	Word	Bits	Contents
CS/CJ-series	A203	---	Port 0 response code
	A204	---	Port 1 response code
	A205	---	Port 2 response code
	A206	---	Port 3 response code
	A207	---	Port 4 response code
	A208	---	Port 5 response code
	A209	---	Port 6 response code
	A210	---	Port 7 response code
C200HX/HG/HE	SR 237	08 to 15	Operating level 1 response code
		00 to 07	Operating level 0 response code
CVM1 and CV-	A503	---	Port 0 response code
series
	A504	---	Port 1 response code
	A505	---	Port 2 response code
	A506	---	Port 3 response code
	A507	---	Port 4 response code
	A508	---	Port 5 response code
	A509	---	Port 6 response code
	A510	---	Port 7 response code
CQM1H-series	AR 02	00 to 07	Response code

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