Toho-electronics TTM200 Manual de usuario descargar pdf (Pagina 9)

3.4 Composition of a response message (transmitted from this product to a

high-level computer)

 For codes ① to ⑩, see "3.5 Description of codes."

 For specific examples of request messages, see "4.1 Examples of communications to be read"

and "4.2 Examples of communications to be written."

3.4.1 Response message in response to a read request message

Ｓ

Ｔ

Ｘ

□ □

Ａ

Ｃ

Ｋ

Ｂ

Ｃ

□ □ □

Ｅ

Ｔ

Ｘ

①

Start code

②

Address

⑧

Acknowledge code

｜④

Identifier

｜

⑥

End code

⑦

BCC data

□ □ □ □ □

｜｜⑤

Numerical data

｜｜

3.4.2 Response message in response to a write/store request message

Ｓ

Ｔ

Ｘ

□ □

Ａ

Ｃ

Ｋ

Ｂ

Ｃ

Ｅ

Ｔ

Ｘ

①

Start code

②

Address

⑥

End code

⑦

BCC data

⑧

Acknowledge code

3.4.3 Response message in the case of an error

Ｓ

Ｔ

Ｘ

□ □

Ｎ

Ａ

Ｋ

Ｂ

Ｃ

Ｅ

Ｔ

Ｘ

①

Start code

②

Address

⑥

End code

⑦

BCC data

⑨

Negative

□

⑩

Error code

acknowledge code

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 50 51

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