TOHO ELECTRONICS TTM-10L - Manual (Page 14)

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4.2 Examples of communications to be written
Example: Request message: This requests this product set at address 03 to set "the A1F setting to
(High-level computer)
135" (write 135).
(Set the event 1 function to the following: Error alarm type to be PV
error alarm 1, alarm type to be deviation lower limit alarm 3 and
additional function to be alarm hold + standby sequence (5).)
In response to that,
Response message: This returns a notice that the request message has been received.
(This product)
*Check that it has been written by reading the data separately.
Write request message (transmitted from a high-level computer)
０
Ａ Ｆ ０
Ｓ
Ｔ
Ｘ
３
Ａ
Ｃ
Ｋ
Ｂ
Ｃ
Ｃ
Ｅ
Ｔ
Ｘ
① ② ⑥ ⑦ ⑧
Ｓ
Ｔ
Ｘ
３ Ｗ
Ｂ
Ｃ
Ｃ
１
Ｅ
Ｔ
Ｘ
① ② ③ ④ ⑥ ⑦
０ ０ ０ １ １
⑤
Code Code, data ASCII code, note 2)
① Start code STX 02H
② Address 03 32H 33H
③ Request contents W (Write) 57H
④ Identifier, note 1) A2F 41H 33H 46H
⑤ Numerical data 00135 30H 30H 31H 33H 35H
⑥ End code ETX 03H
⑦ BCC data request 56H
response 04H
⑧ Acknowledge code ACK 06H
Note 1): See "7. Table of identifiers (codes)."
Note 2): For the ASCII codes, see "8. Table of ASCII codes."
Response message (returned from this product)