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8.
COMMUNICATIONS USING DEDICATED PROTOCOLS
MELSEC-A
(b) Using the JW command (AnACPU common command)
esignation Method
I
St. No.
: Station number
Designation i n protocol 1 is shown below.
,
0 (30H) indicates
OFF,
/ IHILIHILI
and
1 (31H)
indicates
ON.
I
To designate the device range, the following conditions must be met:
I
.
1
5
number of device points
5
160
(Head device number)
+
[(number of device points)
-
11s maximum
device number
lesignation ~ x a m p l e l
o write data to 5 points from M903 to M907 in station
" 0 " .
(Message wait time is 0 msec)
Check sum is calculated within this range
.
AJ71C24
Designation to turn
OFF
M903
A
K
Designation to turn
ON
M904
Designation to turn
ON
M905
Designation to turn
OFF
M906
Designation to turn
ON
M907
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