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8. COMMUNICATIONS USING DEDICATED PROTOCOLS
MELSEC-A
8.8.5
Batch write of the extension file register (ACPU common command)
~esianation Method
I
Designation in protocol
1
is shown below.
Extension file register
batch write command
\
St. No. :Station numbel
Character area C
Designation of the device
range to be wriien
1
1 device point uses 4 characters.
Therefore, a t-word data is expressed
in
4
digits (hexadecimal).
I
To designate the device range, the following conditions must be met:
I
0
1
5
number of device points
5
64
0
(Head device number)
+
(number of device points)
5
maximum device
number
lesignation Example1
To write data t o 3 points :
R7010
t o
R7012
in the extension file register block number
05
ir
station number "3". (Message wait time is 0 msec)
Indicates that:
The content to be written to R7010 of block Number 05 is 0123H
(291 in decimal)
The content to be written to R7011 of block Number 05 is AB07H
(-21753 in decimal)
The content to be written to R7012 of block Number 05 is 3322H
(13090 in decimal)
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