Omron SYSMAC CJ1W-SCU21-V1, Operation Manual

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C-mode (Host Link) Command Master Appendix C
DM AREA READ (RD Command)
(Sequence No. 707 (Hex 02C3))
Reads the contents of the specified number of DM Area words beginning with the designated word from the
specified Host Link Unit and stores starting from the specified storage word.
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 Always 0004 hex (4 decimal)
+1 (Undefined) Host Link unit
No.
(2 digits BCD) 00 to 31
+2 First read word (4 digits BCD) 0000 to 9999
+3
Number of read words
(4 digits BCD) Depends on the remote CPU Unit.
+0
+1
+2
+3
(Undefined)
Number of read words
First read word
First word of
send data
Number of send data words
Host Link unit No.
Offset Contents (data format) Data
+0
Number of receive data words 0003 to 00FA hex (3 to 250 decimal)
+1 (Undefined) End code
(2 digits hex) The end code is stored in hexadecimal.
+2 Read data (4 digits hex) The contents of the first read word is
stored
+3 The contents of the first read word +1
is stored
+0
+1
+2
Read data
Receive data
storage words
Number of receive data words
(Undefined) End code