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Toho Electronics TTX-800 Operation Manual

2ch module-type controller
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TOHO ELECTRONICS INC.
Operation Manual (Communication Edition)
(TOHO Protocol, MODBUS）
Model: TTX-800
Name: 2ch Module-type Controller
4D-6607-A
- 1 -

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Summary of Contents for Toho Electronics TTX-800

  • Page 1 TOHO ELECTRONICS INC. Operation Manual (Communication Edition) (TOHO Protocol, MODBUS） Model: TTX-800 Name: 2ch Module-type Controller 4D-6607-A - 1 -...

  • Page 2: Table Of Contents

    Thank you very much for purchasing TTX-800. Kindly read this operation manual for proper usage. Table of Contents Before Using the Product ······································································· - 3 - About the Operation Manual ······························································· - 3 - Things the Communication Function Can Do ···················································· - 3 - Position (Priority) of Communication ··························································...

  • Page 3: Before Using The Product

    Before Using the Product 1.1 About the Operation Manual This manual explains the communication function of the TTX-800 (hereinafter referred to as the “Product”). 1.2 Things the Communication Function Can Do The unit is equipped with RS-485 for data communication with the host computer, which allows users to write and read to items of this product that are described in “6 .

  • Page 4: Outline

    Setting the MODBUS Communication 2.1 Outline Initial settings need to be made to the product for it to perform a communication function. Setting shall be done by keys at the front side. Follow the procedure shown below to navigate between setting screens. See the User’s Manual of the product for details. When the setting is done, press the MODE key for more than two seconds to return to operation mode.

  • Page 5: Detailed Settings Of The Communication Setting Mode

    2.2 Detailed Settings of the Communication Setting Mode 2.2.1 Setting of the Communication Protocol Please set the communication protocol. Initial Value Settings Modbus(RTU) Modbus(ASCII) 2.2.2 Data Length PV Please set the data length. SV Initial Value Settings 7 bits 8 bits 2.
  • Page 6 2.2.5 Setting of the Communication Speed PV Please set the communication speed. SV Initial Value Settings 1200bps 2400bps 4800bps 9600bps 19200bps 38400bps 2.2.6 Communication Address Please set the communication address. Initial Value Settings Setting Range 1～247 The communication address of CH2 is “Communication Address + 1”...

  • Page 7: Modbus Communication Control

    MODBUS Communication Control 3.1 Communication Procedures This product 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. Timing of Transmission See "3.3.4.1 ."...

  • Page 8: Explanation Of Modbus Rtu Communication

    Explanation of MODBUS RTU Communication 3.3.1 Structure of MODBUS RTU Request Message (Data Transmission from the Upper Computer to This Product) ■ See “3.3.3 Explanation of MODBUS RTU Codes” for codes a) to g). 3.3.1.1 Structure of Read Request Message a) Slave Address b) Function Code Upper...
  • Page 9 3.3.2 Structure of the MODBUS RTU Response Message (Data Transmission from This Product to Upper Computer) ■ See “3.3.3 Explanation of MODBUS RTU Codes“ for codes a) to h). 3.3.2.1 Response Message for Read Request Message a) Slave Address b) Function Code f) Number of Bytes Number of Registers x 2 Upper...
  • Page 10 3.3.3 Explanation of MODBUS RTU Codes ■ The following codes from a) Slave Address, b) Function Code up to h) Error Code will be expressed in 8-bit binary: a) Slave Address This is the address of the device that will be communicated by the upper computer (this product). The address in the response message from this product indicates the source of the response message.
  • Page 11 h) Error Number If there is an error in the message that was sent by the upper computer, the error number will be included in the “response message” of this product for the reply. Contents and classification of errors are the following: Error Number Description of errors in the “Request Message”...
  • Page 12 3.3.4 Things to Be Noted During MODBUS RTU Communication 3.3.4.1 Timing of Transmission Upon using RS-485, set enough response delay time to ensure communication (sending/receiving) with the upper computer. See the figure “3.1 Communication Procedures.” 3.3.4.2 Request Interval If “request message” is to be sent continuously by the upper computer, wait for at least 2 msecs. from the arrival of the “response message”...

  • Page 13: Explanation Of Modbus Ascii Communication

    Explanation of MODBUS ASCII Communication 3.4.1 Structure of MODBUS ASCII Request Message (Data Transmission from the Upper Computer to This Product) ■ See “3.4.3Explanation of MODBUS ASCII Codes” for codes a) to j). 3.4.1.1 Structure of Read Request Message a) Start Code ‘:’...
  • Page 14 3.4.2 Structure of MODBUS ASCII Response Message (Data Transmission from This Product to the Upper Computer) ■ See “3.4.3Explanation of MODBUS ASCII Codes” for codes a) to j). 3.4.2.1 Response Message for Read Request Message a) Start Code ‘:’ b) Slave Address ‘0’,’1’...
  • Page 15 3.4.3 Explanation of MODBUS ASCII Codes ■ The following codes from a) Start Code, b) Slave Address up to j) Error Number will be expressed in ASCII code: ■ See “7. List of ASCII Codes“ for details about ASCII codes. ■...
  • Page 16 i) Data Section Specifies the data to be written into the register. Data is four bytes (fixed). If the data contains a decimal point, set the numeric value that ignores the decimal point. Data that is enclosed in parentheses is the value that will be used in the actual message to be sent. See “3.4.1 Structure of MODBUS ASCII Request Message (Data Transmission from the Upper Computer to This Product)”...
  • Page 17 3.4.4 Things to Be Noted During MODBUS ASCII Communication 3.4.4.1 Timing of Transmission Upon using RS-485, set enough response delay time to ensure communication (sending/receiving) with the host computer. See the figure “3.1 Communication Procedures.” 3.4.4.2 Request Interval If the “request message” is to be sent continuously by the upper computer, wait for at least 2 msecs. from the arrival of the “response message”...

  • Page 18: Specifications

    Specifications 4.1 Type of Communication Standard : EIA Standard based on RS-485 4.2 Communication Specifications 4.2.1 Communication Method : Network･････Multidrop System (Maximum of 1 to 31 stations) : Direction of Information･･･････Half-Duplex : Synchronization System･･･････Start-Stop Synchronization : Transmission Code･･･････ASCII 7-bit code except for BCC data (For 8-bit code, top bit = 0) 4.2.2 Interface System...

  • Page 19: Wiring

    Wiring ○ The figure below shows a case where secondary stations 1－3 (3 stations) will be connected to the primary station. ◇ For cables ①－③, use the cable with the same characteristic impedance. ・Connect secondary stations 1－3 as slave as shown in the figure. Use the cable with the same characteristic impedance for the connection between secondary stations as well.

  • Page 20: List Of Identifiers (Codes)

    List of Identifiers (Codes) ■ See the User’s Manual of this product for setting range, selection items, initial value, and other related information. 6.1.1 Initial Setting Mode Modbus Name Command Remark Absolute (DEC) Relative (HEX) 40257 0100 Setting of the Input Type 40259 0102 Setting of the Decimal Point...
  • Page 21 6.1.2 Control Setting Mode modbus Name Command Remark Absolute (DEC) Relative (HEX) 40513 0200 Control Setting (SV) Control Mode 40515 0202 Setting of the Control Type 40517 0204 40519 0206 Setting of the Minimum Limit of SV Limiter 40521 0208 Setting of the Minimum Limit of SV Limiter 40523 020A...
  • Page 22 40591 024E Setting of the Loop Abnormality PV Variation of the Subcontrol 40593 0250 Setting of the Loop Abnormal Time of the Subcontrol 40595 0252 Setting of the Loop Abnormality Display 40597 0254 Setting of the Valve Motor Stroke Time 40599 0256 Setting of the Valve Motor Dead Band...
  • Page 23 6.1.4 OUT2 Setting Mode modbus Name Command Remark Absolute (DEC) Relative (HEX) 41025 0400 Setting of the Access Point 41027 0402 Event 1 Function Setting 41029 0404 Event 1 Additional Function 41031 0406 Event 1 Judgment Timing 41033 0408 Setting of the Maximum Limit of Event 1 41035 040A Setting of the Minimum Limit of Event 1...
  • Page 24 6.1.5 OUT3 Setting Mode modbus Name Command Remark Absolute (DEC) Relative (HEX) 41281 0500 Setting of the Access Point 41283 0502 Event 1 Function Setting 41285 0504 Event 1 Additional Function 41287 0506 Event 1 Judgment Timing 41289 0508 Setting of the Maximum Limit of Event 1 41291 050A Setting of the Minimum Limit of Event 1...
  • Page 25 6.1.8 Communication Setting Mode modbus Name Command Remark Absolute (DEC) Relative (HEX) 42049 0800 Setting of Communication Protocol 42051 0802 Data Length 42053 0804 Parity Check 42055 0806 Stop Bit Length 42057 0808 Setting of Communication Speed 42059 080A Communication Address 42061 080C Response Delay Time...
  • Page 26 6.1.10 Communication Monitor Register ・The communication monitor register is capable of continuous reading. ・Specify the number of registers you wish to read continuously to the “Number of Registers” of the read request message. Upon such, make sure that the specified value is within the register address shown on the table below. modbus Name Command...

  • Page 27: List Of Ascii Codes

    7. List of ASCII Codes Upper Lower Space “ & ‘ < ¥ > ※How to Use the ASCII Code Table: (ASCII Code) = (Upper) + (Lower) Example 1: If “A”: (41h) = (40h) + (01h) Example 2: If “m”: (6Dh) = (60h) + (0Dh) - 27 -...
  • Page 28 TOHO ELECTRONICS INC. Main Office 2-4-3 Nishi-Hashimoto, Midori-Ku, Sagamihara-Shi, Kanagawa-Ken 252-0131 Japan TEL: (042) 700-2100 (Representative Line) FAX: (042) 700-2112 Tokyo Office Room 401 Palace Yoyogi Uehara, 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-Kita1-21 Tenjinbashi, Kita-Ku, Osaka-Shi, Osaka 530-0041 Japan...

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