TOHO ELECTRONICS TTM-00BT - Manual (Page 28)

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7.9.12 Examples of communications to be written
Example: Request message: Requests that the temperature alarm output setting of EIF in channel 1
(High-level computer)
of unit number 3 be changed to deviation top/bottom alarm + holding.
In response to that,
Response message: This returns a notice that the request message has been received.
(This product)
*Check that it has been correctly written by reading the data separately.
Write request message (transmitted from a high-level computer)
S
T
X
3 1 W E 1 F 0 0 0 1 1
E
T
X B
C
C
① ② ③ ④ ―⑤― ―――⑥――― ⑦ ⑧
Response message (returned from this product)
S
T
X
3 1
A
C
K E
T
X B
C
C
① ② ③ ⑨ ⑦ ⑧
Code Code, data ASCII code, note 2)
① Start code STX 02H
② Unit number 3 33H
③ Channel number 1 31H
④ Request contents W (Write) 57H
⑤ Identifier, note 1) E1F 41H 34H 46H
⑥ Numerical data 00011 30H 30H 30H 31H 31H
⑦ End code ETX 03H
⑧ BCC data request 56H
response 05H
⑨ Acknowledge code ACK 06H
Note 1): See "6. Table of identifiers (codes)."
Note 2): For the ASCII codes, see "7.9.13. Table of ASCII codes."