Toho-electronics TRM-006A Bedienungsanleitung

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TOHO ELECTRONICS INC.
Operation Manual, Communications
(TOHO protocol and MODBUS)
Model: TRM-006A Series
Designation: Digital Indicator
Seitenansicht 0
1 2 3 4 5 6 ... 39 40

Inhaltsverzeichnis

Seite 1 - TOHO ELECTRONICS INC

1 TOHO ELECTRONICS INC. Operation Manual, Communications (TOHO protocol and MODBUS) Model: TRM-006A Series Designation: Digital Indicator

Seite 2

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

Seite 3

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

Seite 4

12 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 mes

Seite 5 - 2.1 Overview

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

Seite 6

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

Seite 7

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

Seite 8 - 3.2 Message types

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

Seite 9

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

Seite 10 - Negative

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

Seite 11 - 3.5 Description of codes

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

Seite 12

2 Thank you very much for purchasing a TRM-006A Series (with communications). Please read this operation manual carefully and use this product correct

Seite 13

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

Seite 14

21 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 Des

Seite 15

22 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 F

Seite 16

23 6.4.3 Response message in the case of an error a) Slave address 1BH b) Function code 83H h) Error code 02H High level E1H e) CRC-16 Low le

Seite 17 - 5.1 Overview

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 deci

Seite 18

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

Seite 19

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

Seite 20 - 6.2 Message types

27 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

Seite 21

28 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” ,

Seite 22

29 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 le

Seite 23

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

Seite 24

30 d) Number of registers This specifies the number of registers to be written in. Since this product has a fixed number of registers (which is 2

Seite 25

31 j) Error code If a message from a high-level computer is error-ridden, it will be incorporated in the "response message" from this

Seite 26

32 6.11.4 Errors in address specification This product will not respond to any "request message" that specifies an address other than tha

Seite 27

33 Then enter calculable data into the 1rc_arry(), and enter the number of data items into the arry_count. After that, run the following program to ca

Seite 28

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

Seite 29

35 8. Connections T/R(A)T/R(B)T/R(A)T/R(B)T/R(A)T/R(B)T/R(A)T/R(B) Install an end of line resistor at both of the farthest devices in the pare

Seite 30 - SV = -10.00°C FFFFFC18H

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

Seite 31

37 MODBUS address Identifier Low-level W High-level W Character Name R/W Description □DP 30 31 ^ QF Set a decimal position R/W R/W the decimal

Seite 32

38 MODBUS address Identifier Low-level W High-level W Character Name R/W Description TRH 164 165 ^oQF Set an upper limit for transmission output

Seite 33

39 10. Table of ASCII codes ASCII code 00H 01H 02H 03H 04H 05H 06H 07H Code used NUL SOH STX ETX EOT ENQ ACK BEL ASCII code 08H

Seite 34 - 7. Specifications

4 1. Before using the product 1.1 On this operation manual This is an operation manual regarding communications with a TRM-006A Series (hereinafte

Seite 35 - 8. Connections

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

Seite 36

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

Seite 37

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

Seite 38

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

Seite 39 - 10. Table of ASCII codes

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

Seite 40

9 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 of

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