Mitsubishi Electric Melsec Q Series User Manual page 209

7
PROGRAMMING
7.4.2 WRITE services (Class1_SERVICE, Class2_SERVICE)
This section explains the request and response formats of the WRITE services
(Class1_SERVICE, Class2_SERVICE).
(1) Request format
Offset Address
+ 0 (+ 0 )
H
+ 1 (+ 1 )
H
+ 2 (+ 2 )
H
+ 3 (+ 3 )
H
+ 4 (+ 4 )
H
+ 5 (+ 5 ) to +124 (+7C )
H H
+125 (+7D ) to
H
+127 (+7F )
H
Table7.18 Request Format
Set a request code.
(1) In WRITE service (Class1_SERVICE)
Set value: 1401
H
(2) In WRITE service (Class2_SERVICE)
Set value: 1411
H
(1) In WRITE service (Class1_SERVICE)
b15 b8
0
1) Set the FDL address of the target DP-Slave.
Set value : 00 to 7D (0 to 125)
H H
(2) In WRITE service (Class2_SERVICE)
b15 b8
2)
1) Set the FDL address of the target DP-Slave.
Set value : 00 to 7D (0 to 125)
H H
2) Set CommRef No. contained in the response format of the INITIATE service.
Set value : 00 to 7E (0 to 126)
H H
Set the length of the data to write. (Unit: byte)
Set value: 1 to 240
Set the slot No. to write.
Set value: 0 to 254
Set the index to write.
Set value: 0 to 255
Set the data to write.
b15
Data 2
+5 (+5 )
H
+6 (+6 ) Data 4
H
to
124 (+7C ) Data 240
H
Empty area (Write 0000 .)
H
Set value: Fixed to 0000
H
7.4 Program Example for Acyclic Communication with DP-Slaves
7.4.2 WRITE services (Class1_SERVICE, Class2_SERVICE)
Description/Set Value
b7 b0
1)
b7 b0
1)
b8 b7
Data 1
Data 3
Data 239
b0
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