Toho-electronics TTX-700 Manual do Utilizador

TOHO ELECTRONICS INC. Operation Manual, Communications (TOHO protocol and MODBUS) Model: TTX-700 Designation: Module Controller

3.4 Composition of a response message (transmitted from this product to a high-level computer) n For codes ① through ⑩, see "3.5. Descr

3.5 Description of codes n The codes from ① STX, ② address to ⑩ ERR as indicated below are expressed in ASCII codes. n For the ASCII cod

⑧ ACK It is an acknowledge code. If a message received by this product is error-free, this code will be incorporated in the "response me

3.6 Communications precautions 3.6.1 Communications timing Set a sufficient response delay to make sure that this product is switched over fro

3.6.8 Storing data other than a store request message Store all parameters in the EEPROM in either of the two cases described below, even if no

4. Examples of TOHO communications 4.1 Examples of communications to be read Example: Request message: This requests this product set at addr

4.2 Examples of communications to be written Example: Request message: This requests this product set at address 03 to set "the E1F setti

5. Settings regarding MODBUS communications 5.1 Overview Before communications is performed, initial settings must be made on this product. En

5.2 Setting a data length 5.3 Setting a stop bit length 5.4 Setting a parity While in the "Set a communications parameter" screen

5.6 Setting an address While in the "Set a communications address" screen on the preceding page, operate the ▲ and ▼ keys to make t

Contents 1. Before using the product...

6. MODBUS communications control 6.1 Communications procedure This product returns a "response message" in response to a "req

6.3 Composition of an RTU request message (transmitted from a high-level computer to this product) n For codes a) through i), see "6.5. D

6.3.3 Composition of a store request message a) Slave address 03H b) Function code 10H High level 02H c) Register address Low level 0EH Fi

Single a) Slave address 03H b) Function code 06H High level 00H c) Register address Low level C0H First register address High level 00H g) D

e) CRC-16 This error check code is for detecting message errors. This transmits a CRC-16 (tour redundancy code). The multinomial for genera

6.6 Precautions on RTU communications 6.6.1 Communications timing Set a sufficient response delay to make sure that this product is switched

6.6.8 Changing the settings (SV or SV2) by communications during auto-tuning Even if the settings (SV or SV2) used in control for auto-tuning a

6.8 Composition of an ASCII request message (transmitted from a high-level computer to this product) n For the codes a) through g), see "

6.8.3 Composition of a store request message a) Start code “:” b) Slave address “0” , “3” c) Function code “1” , “0” High level “0” ,

6.9.2 Response message for a write/store request message a) Start code “:” b) Slave address “0” , “3” c) Function code “1” , “0” High l

6 MODBUS communications control... 20 6.1 Com

6.10 Description of ASCII codes n The codes from a) start code to b) slave address to j) error type described below are expressed in ASCII cod

i) Data portion This specifies data to be written in the register. The data is fixed at 4 bytes. This product will write data without the dec

6.11 Precautions on ASCII communications 6.11.1 Communications timing Set a sufficient response delay to make sure that this product is swit

6.11.8 Changing the settings (SV or SV2) by communications during auto-tuning Even if the settings (SV or SV2) used in control for auto-tuning

7. Specifications 7.1 Communications standard category: Compliant with EIA standard RS-485 7.2 Communications specifications 7.2.1 Commu

8. Connections 8.1 Connections for the RS-485 Ｔ／Ｒ（Ａ）Ｔ／Ｒ（Ｂ）Ｔ／Ｒ（Ａ）Ｔ／Ｒ（Ｂ）Ｔ／Ｒ（Ａ）Ｔ／Ｒ（Ｂ）Ｔ／Ｒ（Ａ）Ｔ／Ｒ（Ｂ） Communications is such that the connections

9. Table of ASCII codes ASCII code ００Ｈ ０１Ｈ ０２Ｈ ０３Ｈ ０４Ｈ ０５Ｈ ０６Ｈ ０７Ｈ ＮＵＬ ＳＯＨ ＳＴＸ ＥＴＸ ＥＯＴ ＥＮＱ ＡＣＫ ＢＥＬ ASCII code

10. Table of identifiers (codes) MODBUS ADR Operation mode Low- level W High- level W Iden- tifier Character Name R/W Description 40000 40001

MODBUS ADR Event setting mode Low- level W High- level W Iden- tifier Character Name R/W Description 40072 40073 E1F Set an event output func

MODBUS ADR Screen-less commands Low- level W High- level W Iden- tifier Character Name R/W Description 40122 40123 TST Timer start stop R/W

1. Before using the product 1.1 On this operation manual This is an operation manual regarding communications with a TTX-700 (hereinafter ref

TOHO ELECTRONICS INC. Head office: 1-13-21, Tanashioda, Sagamihara Kanagawa 229-1125 Japan. Phone: +81-42-

2. Settings regarding TOHO communications 2.1 Overview Before communications is performed, initial settings must be made on this product. En

2.2 Setting a data length 2.3 Setting a stop bit length 2.4 Setting a parity 2.5 Setting whether to conduct a BCC check While in the &

2.7 Setting an address While in the "Set a communications address" screen on the preceding page, operate the ▲ and ▼ keys to make t

3. TOHO communications control 3.1 Communications procedure This product returns a "response message" in response to a "reque

3.3 Composition of a request message (transmitted from a high-level computer to this product) n For codes ① to ⑩, see "3.5. Description