TOHO TTM-000W Series Скачать руководство пользователя страница 8 | Manualshive

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TOHO TTM-000W Series Скачать руководство пользователя страница 8

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3.3 Structure of Request Message (Data transmission from upper computer to this product)

■ See "3.5 Explanation about Codes" for codes from ① to ⑩.

■ See "4.1 Sample Communication for Reading" and "4.2 Sample Communication for Writing" for concrete
samples of the request message.

3.3.1 Structure of Read Request Message

3.3.2 Structure of Write Request Message

3.3.3 Structure of Save Request Message

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Содержание TTM-000W Series

Страница 1: ...1 Operation Manual Communication Edition TOHO Protocol MODBUS Model TTM 000W Series Name Digital Controller...

Страница 2: ...ng of Response Delay Time 2 9 Switching of Communication Mode 3 TOHO Communication Control Page 8 3 1 Communication Procedures 3 2 Kinds of Message 3 3 Structure of Request Message Data transmission f...

Страница 3: ...ng RTU Communication 6 7 Sample Computation of CRC 16 6 8 Structure of ASCII Request Message Data transmission from upper computer to this product 6 9 Structure of ASCII Response Message Data transmis...

Страница 4: ...aced by the previous data data that is saved in the EEPROM if the power is turned OFF and then turned ON To save the written data into the EEPROM of this product execute the save request message See 3...

Страница 5: ...More than 2 seconds Setting Mode Selection Screen Key Communication Setting Mode MODE Key Setting of Communication Protocol TOHO Communication Protocol Initial alue MODE Key Setting of Communication...

Страница 6: ...4800 BPS 9600 BPS 19200 BPS 2 7 Setting of Communication Address Set the value by pressing the keys on the Setting of Communication Address screen in a previous page The initial value is Setting Rang...

Страница 7: ...returns the response message as a reply to the request message that will be sent by the upper computer Therefore the transmission will never be initiated by this product 3 2 Kinds of Message Kinds of...

Страница 8: ...3 5 Explanation about Codes for codes from to See 4 1 Sample Communication for Reading and 4 2 Sample Communication for Writing for concrete samples of the request message 3 3 1 Structure of Read Req...

Страница 9: ...anation about Codes for codes from to See 4 1 Sample Communication for Reading and 4 2 Sample Communication for Writing for concrete samples of the request message 3 4 1 Response Message for Read Requ...

Страница 10: ...t If the blind setting is to be read from the product If the blind setting is to be written into the product Identifier It is a classification symbol identifier of the data to be read or written that...

Страница 11: ...ttached next to NAK to the response message that will be returned by this product Since error number 0 indicates the breakdown of measuring equipment memory error or A D conversion error it will be in...

Страница 12: ...n the reasonable time Once STX is received this product clears all codes that were received prior to the said STX 3 6 5 Number of Digits of Data and Position of Decimal Point See 3 5 Explanation about...

Страница 13: ...the measured value P This product Read Request Message to be sent by the upper computer Code Symbol Data ASCII Code Note 2 Start Code STX 02H Address 27 32H 37H Contents of Request R Read 52H Identifi...

Страница 14: ...received This product Read the data separately to check if the data is written correctly Write Request Message to be sent by the upper computer Code Symbol Data ASCII Code Note 2 Start Code STX 02H A...

Страница 15: ...ation Setting Mode MODE Key MODE Key Setting of Communication Protocol MODBUS RTU Initial alue Setting of Communication Protocol MODBUS ASCII Initial MODE Key MODE Key Setting of Communication Paramet...

Страница 16: ...a previous page The initial value is Setting Range 1 247 stations Setting of 0 is not allowed 5 8 Setting of Response Delay Time Set the time to take for the upper computer to complete the receiving...

Страница 17: ...ter Therefore the transmission will never be initiated by this product 6 2 Kinds of Message Kinds of message can be briefly classified into the following Data is in binary during RTU mode In case of A...

Страница 18: ...age Data transmission from upper computer to this product See 6 5 Explanation about RTU Codes for codes from a to i 6 3 1 Structure of Read Request Message 6 3 2 Structure of Write Request Message 6 3...

Страница 19: ...transmission from this product to upper computer See 6 5 Explanation about RTU Codes for codes from a to h 6 4 1 Response Message for Read Request Message 6 4 2 Response Message for Write Save Reques...

Страница 20: ...to 0002H e CRC 16 It is an error checking code for the detection of the possible error in the message It sends CRC 16 Cyclic Redundancy Code Generating polynomial of CRC 16 that is used in this produc...

Страница 21: ...whether or not there is an error in the request message For multiple errors the largest error number will be included Contents and classification of error are the following Error Number Description o...

Страница 22: ...Therefore the upper computer should resend the necessary request message if the response message is not returned within the reasonable time 6 6 5 Number of Digits of Data and Position of Decimal Point...

Страница 23: ...count As Integer Dim c_next c_carry As LongDim crc_arry 64 As Integer Next data to be computed will be placed in crc_arry while the quantity of data will be placed in arry_count After that the computa...

Страница 24: ...age Data transmission from upper computer to this product See 6 1 Explanation about ASCII Codes for codes from a to g 6 8 1 Structure of Read Request Message 6 8 2 Structure of Write Request Message 6...

Страница 25: ...transmission from this product to upper computer See 6 1 Explanation about ASCII Codes for codes from a to g 6 9 1 Response Message for Read Request Message 6 9 2 Response Message for Write Save Requ...

Страница 26: ...ince the number of registers of this product is fixed to 2 set it to 0002H e Register Address It specifies the position of data to be read or written with two bytes See 10 List of Identifiers Codes fo...

Страница 27: ...he error number will be included in the response message of this product for the reply Since error number 04 indicates the breakdown of measuring equipment memory error A D conversion error or AT erro...

Страница 28: ...ssary request message if the response message is not returned within the reasonable time 6 11 5 Number of Digits of Data and Position of Decimal Point See 6 10 Explanation about Codes h Numerical Data...

Страница 29: ...be placed in the signed 16 bit integer variable Dim LRC As Integer Dim i arry_count As Integer Dim lrc_arry 128 As Integer Next data to be computed will be placed in lrc_arry while the quantity of dat...

Страница 30: ...p Bit Length Select and set from 1 bit and 2 bits Data Length Select and set from 7 bits and 8 bits Parity Select and set from none odd and even BCC Checking Select and set from Yes with and No withou...

Страница 31: ...wn in the figure Use the cable with the same characteristic impedance for the connection between secondary stations as well Attach the terminator to both the primary station and the farthest secondary...

Страница 32: ...Priority Screen Function Setting 4 PR5 000Ch 40013 Priority Screen Func tion Setting 5 R W R W of Priority Screen Function Setting 5 PR6 000Eh 40015 Priority Screen Func tion Setting 6 R W R W of Pri...

Страница 33: ...ng of the Proportional T2 004Ch 40077 Setting of the Propor R W R W of the Setting of the Proportional MH2 004Eh 40079 Maximum Limit of M Limiter R W R W of the Maximum Limit of M Limiter ML2 0050h 40...

Страница 34: ...the Setting of Communication Parameters BPS 008Ch 40141 Setting of Communica tion Speed R W R W of the Setting of Communication Speed ADR 008Eh 40143 Communication Address R W R W of Communication Add...

Страница 35: ...ier Relative Address Absolute Address Charac ter Name L B Description 000 SET0 L B Blind 00000 Do not blind 00001 001 SET1 L B Blind 00000 Do not blind 00001 002 SET2 L B Blind 00000 Do not blind 0000...

Страница 36: ...DC3 3 C S c s 04h EOT DC4 4 D T d t 05h ENQ NAK 5 E U e u 06h ACK SYN 6 F V f v 07h BEL ETB 7 G W g w 08h BS CAN 8 H X h x 09h HT EM 9 I Y i y 0Ah LF SUB J Z j z 0Bh VT ESC K k 0Ch FF FS L l 0Dh CR GS...

Страница 37: ...a 3 1 8 Nishihara Shibuya Ku Tokyo 151 0066 Japan TEL 03 5452 4010 Representative Line FAX 03 5452 4017 Osaka Office 7F East Hall Yachiyo Bldg 2 1 21 Tenjinbashi Kita Ku Osaka Shi Osaka 530 0041 Japan...

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