TOHO ELECTRONICS TTM-00BT - Manual (Page 23)

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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 Iden
tifier
End code BCC data