Omron CQM1H-SCB41 operation manual Send Data Word Allocation 2nd Operand of PMCR260

CompoWay/F Master Protocol									Appendix B
	Send Data Word Allocation (2nd Operand of PMCR(260))
	First word of	+0			Number of send data words
	send data
		+1			(Undefined)		Node No.
		+2			MRC		SRC
		+3				Number of send bytes
		+4				Send data
				Offset		Contents (data format)			Data
			+0			Number of send data words			0005 to 0128
						(4 digits BCD)
			+1			(Undefined)		Node No. (2 digits	00 to 99
								BCD)
			+2			MRC		SRC	Set the command code for the required
						(2 digits Hex)		(2 digits Hex)	service
			+3			Number of send bytes (4 digits BCD)			Number of data bytes from the next byte
									after the command code until the byte just
									before the ETX.
									0 to 984 decimal
			+4			Send data (4-digit Hex)			The data specified in hexadecimal here will
				on					be converted to ASCII and the number of
									bytes specified in S+3 will be sent.

Note 1. Set the number of send bytes to twice the number of bytes in memory. This is necessary because the data is converted to ASCII data before being sent.

2.When hexadecimal data is converted to ASCII data, data is sent starting from the send data word with the largest offset. This is done because ladder programming handles data in 4-byte units.

Send data words

1 2 3 4

5 6 7 8

Send frame

“56” “78” “12” “34”

Receive Data Word Allocation (3rd Operand of PMCR(260))

Receive data +0

storage words	+1
	+2

Number of receive data words

Response code

Receive data

Offset	Contents (data format)	Data
+0	Number of receive data words	0003 to 0128
	(4 digits BCD)
+1	Response code (4 digits Hex)	The response code will be stored in
		hexadecimal form.
+2	Receive data (4-digit Hex)	The data from just after the response code
on		until just before the ETX will be converted
		from ASCII to hexadecimal and stored
		here.

Note When ASCII data is converted to hexadecimal data, data is stored starting from the receive data word with the largest offset. This is done because ladder programming handles data in 4-byte units.

Receive frame

“01” “23” “45” “67”

Receive data words

4 5 6 7

0 1 2 3

144