User guide

23
7.9.8 Setting and reading data collectively
1) Composition of a read request message
a) All channels
S
T
X
□
A R
□ □ □
E
T
X
B
C
C
① ② ③ ④ ―⑤― ⑦ ⑧
Start code Unit number Channel
Contents of the
request: read
Identifier End code BCC data
2) Composition of a write request message
a) All channels
S
T
X
□
A W
□ □ □ □ □ □ □ □
E
T
X
B
C
C
① ② ③ ④ ―⑤― ―――⑥――― ⑦ ⑧
Start code Unit number Channel
Co
ntents of the
request: write
Identifier Numerical data End code BCC data
3) Composition of a store request message
a) All channels
S
T
X
□
A W S T R
E
T
X
B
C
C
① ② ③ ④ ―⑤― ⑦ ⑧
Start code Unit number Channel
Contents of the
request: write
Identifier End code BCC data