Omron CQM1H-SCB41 operation manual CompoWay/F Master Protocol Sequences, Structure of the Protocol

CompoWay/F Master Protocol Appendix B

CompoWay/F Master Protocol Sequences

The CompoWay/F Master Protocol provides six communications sequences that can be used for the following:

•Converting to ASCII data or not converting to ASCII data

•Sending to a specified Unit or broadcasting

•Specifying from the command code or specifying from the subaddress and SID.

Structure of the Protocol

The following table shows the structure of the CompoWay/F Master Protocol.

Sequence	Communications	Function	Ladder interface
No.	sequence name
			Send word	Receive word
			allocation	allocation
600	Send with ASCII conver-	Converts the specified data beginning with	Yes	Yes
	sion, with response	the command code to ASCII and sends it
		to the specified Unit. The response is con-
		verted to hexadecimal and stored starting
		at the specified word.
601	Broadcast with ASCII	A broadcast version of sequence No. 600.	Yes	No
	conversion, no response	No responses are received.
602	Send with no conversion	Sends specified data beginning with the	Yes	Yes
	and with response	command code to the specified Unit. The
		response is stored starting at the specified
		word. This is the same as sequence No.
		600 without data conversion and can be
		used when conversion is not required.
603	Broadcast with no con-	A broadcast version of sequence No. 602.	Yes	No
	version and no response	No responses are received.
604	General-purpose send	Sends specified data beginning with the	Yes	Yes
	with no conversion and	subaddress and SID to the specified Unit.
	with response	The response is stored starting at the spe-
		cified word. This sequence can be used
		whenever it is necessary to specify the
		subaddress or SID.
605	General-purpose broad-	A broadcast version of sequence No. 604.	Yes	No
	cast with no conversion	No responses are received.
	and no response

Sequence No. 600 can be used for the normal CompoWay/F Master function (ASCII conversion, specification from command code).

Refer to the communications specifications for the OMRON CompoWay/F component to which the command is being sent and set the command code and required data starting at the words specified for the 3rd operand of PMCR(260).

The relationship between the CompoWay/F command and response frames and the operands of PMCR(260) is described next.

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