Omron SYSMAC CJ1W-SCU21-V1, Руководство по эксплуатации

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CompoWay/F Master Protocol Appendix B
The received frames are stored in order from the rightmost word to leftmost word of the I/O memory address.
Variable Area Read
(Sequence No. 610 (Hex 0262))
This sequence reads the contents of the specified number of elements from the address of the specified variable type to the
specified node number and stores the data starting at the specified word.
Send Data Word Allocation (3rd Operand of PMCR(260))
Receive Data Word Allocation (4th Operand of PMCR(260))
The received frames are stored in order from the leftmost word to the rightmost word of the I/O memory
address.
1 2 3 4
5 6 7 8
Receive data words
Receive frame
"12" "34" "56" "78"
Rightmost word
Leftmost word
Offset Contents (data format) Data
+0 Number of send data words Always 0005 hex (5 decimal)
+1 (Undefined) Node No.
(2 digits BCD) 00 to 99
+2 Variable type
(2 digits hex)
Set the area type (2 digits) and the first read
word (6 digits). The leftmost 16 bits of the
first read word specify the address and the
rightmost 8 bits specify the bit location. Set
the rightmost 8 bits to 00 when bit access is
not required.
+3 First read address (6 digits BCD)
+4 Number of elements (4 digits BCD) Set the number of elements to read.
Number of elements
First word of
send data
Number of send data words
+0
+1
+2
+3
+4
(Undefined)
First read address
Variable type
Node No.
Offset Contents (data format) Data
+0 Number of receive data words 0003 to 00FA Hex (3 to 250 decimal)
+1 Response code (4 digits hex) The CompoWay/F command response code
is stored in hexadecimal code.
+2
on Receive data (4 digits hex) The read data is stored.
Receive data
storage words
+0
+1
+2
Number of receive data words
Response code
Receive data
1 2 3 4
5 6 7 8
Receive data words
Receive frame
"12" "34" "56" "78"
Rightmost word
Leftmost word