Omron SYSMAC CJ1W-SCU21-V1, Operation Manual

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C-mode (Host Link) Command Master Appendix C
DM AREA WRITE (WD Command)
(Sequence No. 714 (Hex 02CA))
Writes the specified write data to the specified Host Link Unit starting from the designated DM Area word. Writ-
ing is done in word units.
Send Data Word Allocation (3rd Operand of PMCR(260))
Receive Data Word Allocation (4th Operand of PMCR(260))
Offset Contents (data format) Data
+0 Number of send data words 0005 to 0021 hex (5 to 33 decimal)
+1 (Undefined) Host Link unit
No.
(2 digits BCD) 00 to 31
+2 First write word (4 bits hex) 0000 to 9999
+3 Number of write bytes
(4 digits hex) Specify the number of write bytes for
the communications line.
Note: The text data is converted into
ASCII on the communications line, so
specify twice the number of bytes of
text data bytes in S+4 onwards.
+4 Write data Sends the write data to the first write
word.
+5 Sends the write data to the first write
word +1.
+0
+1
+2
+3
+4
Number of send data words
(Undefined) Host Link unit No.
Write data
Number of write bytes
First write word
First word of
send data
Offset Contents (data format) Data
+0 Number of receive data words Always 0002 hex (2 decimal)
+1 (Undefined) End code
(2 digits hex) The end code is stored in hexadecimal.
+0
+1
Receive data
storage words Number of receive data words
(Undefined) End code