Toho-electronics TTM000 Manual do Utilizador Página 1

1 TOHO ELECTRONICS INC. Operation Manual, Communications (TOHO protocol and MODBUS) Model : TTM-000 Ser

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

11 3.5 Description of codes The codes from ① STX, ② address to ⑩ ERR type as indicated below are expressed in ASCII codes. For the ASCI

12 ⑥ ETX This code is needed for the receiver to detect the end of a message. It is affixed to the end of a character string to be sent (except f

13 3.6 Communications precautions 3.6.1 Communications timing Set a sufficient response delay to make sure that this product is switched over fr

14 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

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

16 4.2 Examples of communications to be written Example: Request message: This requests this product set at address 03 to set "the E1F settin

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

18 5.2 Setting a data length 5.3 Setting a stop bit length 5.4 Setting a parity 5.5 Setting a BCC check The BCC check is disabled. Initial v

19 5.8 Setting a response delay Set a time from the time when the high-level computer finished sending a "request message" until the time

2 Thank you very much for purchasing a TTM-000 Series (with communications). Please read this operation manual carefully and use this product correctl

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

21 6.3 Composition of an RTU request message (transmitted from a high-level computer to this product) For codes a) through i), see "6.5 Desc

22 6.4 Composition of an RTU response message (transmitted from this product to a high-level computer) For codes a) through h), see "6.5 D

23 6.5 Description of RTU codes The codes from a) slave address to b) function code to h) error code shown below are expressed in 8-bit binary nu

24 g) 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

25 6.6 Precautions on RTU communications 6.6.1 Communications timing Set a sufficient response delay to make sure that this product is switched

26 6.6.8 Storing data other than a store request message This product will store all parameters in the EEPROM in either of the two cases described

27 6.8 Composition of an ASCII request message (transmitted from a high-level computer to this product) For the codes a) through g), see "

28 6.8.3 Composition of a store request message a) Start code “:” b) Slave address “0” , “3” c) Function code “1” , “0” d) Register address Hig

29 6.9 Composition of ASCII response messages (transmitted from this product to a high-level computer) For the codes a) through g), see "6

3 6. MODBUS communications control ... 20 6.1 Communications procedu

30 6.10 Description of ASCII codes The codes from a) start code to b) slave address to j) error type described below are expressed in ASCII codes

31 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 deci

32 6.11 Precautions on ASCII communications 6.11.1 Communications timing Set a sufficient response delay to make sure that this product is switc

33 6.11.8 Storing data other than a store request message This product will store all parameters in the EEPROM in either of the two cases described

34 6.12 Example of LRC calculations Following is an example of calculating LRC with VisualBasic6.0. Variables are declared as shown below. Vis

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

36 8. Connections Host Computer (Master Station)Unit1(Slave Station）Unit2(Slave Station）Unit3(Slave Station）A(+)B(-)A(+)B(-)A(+)B(-)A(+)B(-)termina

37 9. Table of identifiers (codes) For the setting range, options, initial values, and similar parameters, see the operation manual for this syst

38 Identifier Relative address Absolute address Character Name R/W Description □MD 0028h 40041 Control mode setting R/W R/W the control mode set

39 Identifier Relative address Absolute address Character Name R/W Description E1B 0068h 40105 Abnormal for EV1 R/W R/W the special event output 1

4 1. Before using the product 1.1 On this operation manual This is an operation manual regarding communications with a TTM-000 Series (hereinafter

40 Identifier Relative address Absolute address Character Name R/W Description TRP 00A2h 40163 Transfer output normal/reverse switch setting R/W R

41 10. Table of ASCII codes Upper Lower 00h 10h 20h 30h 40h 50h 60h 70h 00h NUL DEL SPACE 0 @ P ` p 01h SOH DC1 ! 1 A Q a q 02h STX

42 TOHO ELECTRONICS INC. Head office: 1-13-21, Tanashioda, Chuo-ku, Sagamihara-shi, Kanagawa 252-

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

6 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 &qu

7 2.8 Setting a response delay Set a time from the time when the high-level computer finished sending a "request message" until the time

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

9 3.3 Composition of a request message (transmitted from a high-level computer to this product) For codes ① to ⑩, see "3.5 Description