Toho-electronics TTM-00BT Manual de usuario descargar pdf (Pagina 27)

8) Storing data other than a store request message

Store all parameters in the EEPROM in either of the three cases described below, even if no

store request message is received.

If auto-tuning is started and ends normally. (Provided that only PID constants are saved.)

9) Changing the settings (SV or SV2) by communications during auto-tuning

Even if the settings (SV or SV2) used in control for auto-tuning are changed by

communications, the settings (SV or SV2) will not be changed until the auto-tuning ends.

Note also that memory banks cannot be changed either, during auto-tuning.

7.9.11 Examples of communications to be read

Example: Request message: Requests the reading of a PV value set in channel 4 of unit number 10.

(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)

①

②

③

⑨

―⑤― ⑦

⑧

Response message (returned from this product)

①

②

③

⑨

―⑤― ―――⑥――― ⑦

⑧

Code Code, data ASCII code, note 2)

① Start code STX 02H

② Unit number A (10) 41H

③ Channel setting 4 34H

④ Request contents R (Read) 52H

⑤ Identifier, note 1) PV1 50H 56H 31H

⑥ Numerical data 00777 30H 30H 37H 37H 37H

⑦ End code ETX 03H

⑧ BCC data request 11H

response 72H

⑨ Acknowledge code ACK 06H

Note 1): See "6. Table of identifiers."

Note 2): For the ASCII codes, see "7.9.13. Table of ASCII codes."

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Toho-electronics TTM-00BT Manual de usuario Pagina 27