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8. COMMUNICATIONS USING DEDICATED PROTOCOLS
MELSEC-A
Example 2:
To read the present values at 2 points of T I 2 3
and
T I 2 4 in station
"5".
Indicates the present value of
78CQH for T I 2 3 (31689 in decimal) and
1234H for T t 24 (4660 in decimal).
/
A
C
K
(6"
Check
sum
is calculated
within this range
Computer
0 5 F F
Dw.L%4ir,*.
E
N
o
AJ71
C24
Check sum is calculated
7 ~ ~ 9 1 1 2 3 4
within this range
I I . , ~ ~ . , ' J . , , P " / I I . , . . , u " , Y *
~
~
F
F
o
R
o
T
N
o
C
~
~
~
O
~
~
E
E T
x
O)"
B 3
t2.U"
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