Toho-electronics TTM-00BT Instrukcja Użytkownika Strona 21

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7.9.6 Composition of a response message (transmitted from this product to a
high-level computer)
n For codes to , see "7.9.9 Code description."
n For specific examples of request messages, see "7.9.11 Examples of communications to be
read" and "7.9.12 Examples of communications to be written."
1) Response message in response to a read request message
S
T
X
A
C
K
E
T
X
B
C
C
―⑤― ―――⑥―――
Start code
Unit number
Channel
Acknowledge code
Identifier
Numerical data
End code
BCC data
2) Response message in response to a write/store request message
S
T
X
A
C
K
E
T
X
B
C
C
Start code
Unit number
Channel
Acknowledge code
End code
BCC data
3) Response message in the case of an error
S
T
X
N
A
K
E
T
X
B
C
C
Start code
Unit number
Channel
Error code
ERR type
End code
BCC data
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