Toho-electronics TTM000 Manual de usuario descargar pdf (Pagina 15)

4. Examples of TOHO communications

4.1 Examples of communications to be read

Example: Request message: This requests this product set at address 27 to read the PV.

(High-level computer)

In response to that,

Response message: This returns PV data (00777).

(This product)

Read request message (transmitted from the high-level computer)

Code

Code, data

ASCII

code, note 2)

①

Start code

STX

02H

②

Address

32H 37H

③

Request contents

R (Read)

52H

④

Identifier, note 1)

PV1

50H 56H 31H

⑤

Numerical data

00777

30H 30H 37H 37H 37H

⑥

End code

ETX

03H

⑦

BCC data request

61H

response

02H

⑧

Acknowledg

e code

ACK

06H

Note 1): See "9. Table of identifiers (codes)."

Note 2): For the ASCII codes, see "10. Table of ASCII codes."

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 41 42

TOHO ELECTRONICS INC 1
Contents 2
2.1 Overview 5
3.2 Message types 8
Acknowledge code 10
Negative 10
3.5 Description of codes 11
5.1 Overview 17
6.2 Message types 20
7. Specifications 35
8. Connections 36
10. Table of ASCII codes 41

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Toho-electronics TTM000 Manual de usuario Pagina 15

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