EKO Instruments Modbus 485 Instruction Manual

EKO Instruments Modbus 485 Instruction Manual

Rtu converter

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INSTRUCTION MANUAL
Modbus 485 RTU Converter
M-Box
Version Number: 1

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Summary of Contents for EKO Instruments Modbus 485

  • Page 1 INSTRUCTION MANUAL Modbus 485 RTU Converter M-Box Version Number: 1...
  • Page 2 9 - 3 . C o m m u n i c a t i o n S p e c i f i c a t i o n s Pg. 1 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 3: Important User Information

    Any modification or repair was done by any person or organization other than EKO service personnel. The damage or defect is caused by not respecting the instructions of use as given on the product brochure or the instruction manual. Pg. 2 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 4 2. RoHS Directive 2002/95/EC EKO Instruments has completed a comprehensive evaluation of its product range to ensure compliance with RoHS Directive 2002/95/EC regarding maximum concentration values for substances. As a result all products are manufactured using raw materials that do not contain any of the restricted substances referred...
  • Page 5: Declaration Of Conformity

    Amendment to the above directive: 93/68/EEC Date: Mar. 6, 2015 Position of Authorized Signatory: Deputy General Manager of Quality Assurance Dept. Name of Authorized Signatory: Shuji Yoshida Signature of Authorized Signatory: Pg. 4 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 6: Safety Information

    3 - 1 . W A R N I N G / C A U T I O N 1. Setup Do not install MODBUS 485 RTU CONVERTER in a place where the MODBUS 485 RTU CONVERTER may get wet or soaked in water.
  • Page 7 4. Introduction The MODBUS 485 RTU converter called "M-Box" is a digital signal conditioner to convert the Voltage output of a solar radiation sensor, PT-100 or 10kΩ NTC temperature sensor into a MODBUS 485 RTU output. The converter can be used with all passive EKO radiometers or any other mV sensor to be connected to data loggers or inverters with a MODBUS 485 RTU input channel.
  • Page 8 Download from EKO website Instruction Manual Optional Items Qty. Remarks USB/485 cable 1 unit With 9V battery 1 pc. 9V battery cable 1 pc. Download from EKO website Software Pg. 7 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 9: Getting Started

    PT-100 / NTC Signal Input Terminal 4 Power Supply Input Terminal ( - ) Power Supply Input Terminal ( + ) Modbus Output Terminal (A) Grounding Terminal Modbus Output Terminal (B) Pg. 8 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 10: Installation

    5 - 2 . S e t u p 1. Installation After installation of the solar sensor the Converter can be installed. Open the enclosure of the MODBUS 485 RTU Converter by releasing the 4 top screws. Guide the sensor cable through the cable gland and secure the cable gland to secure and seal the cable.
  • Page 11: Sensor Configurations

    The converter can be connected to any device with MODBUS 485 RTU communication protocol. Mount the cover onto the enclosure and secure it with the 4 screws firmly. The MODBUS 485 RTU converter is now ready to be used. For proper operation one should apply a supply voltage in the range as specified.
  • Page 12 If a warning message regarding to the installation authorization, click “Yes” to proceed. Setup window appears; click “Next” to go to the next step. (Figure 6-1) Figure 6-1. Software Installation Window Pg. 11 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 13 Assign the destination location and click “Next” (Figure 6-2). Figure 6-2. Choose Destination Location Installation process finishes, the installation is complete. In the menu options Tools/languages different languages can be selected (English, Spanish, Portuguese, Japanese). Pg. 12 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 14 6-3. Wiring to RS-485 USB Controller Note: Power can be provided through a 9V battery (See optional items) 43715615 0 21 Pg. 13 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 15 Start Communication (Continuously reads the static and dynamic results from the node) Note: When different settings are made to the Node (e.g. Baudrate 38400), for communication the Baudrate setting always needs to correspond (38400). Pg. 14 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 16 The following Node parameters that can be changed without password. Settings need to be changed one by one followed by “Send Config”. Note the settings are reflected to MODBUS 485 RTU CONVERTER only when “Send Config” button is clicked.
  • Page 17 ) then click “Send Config” button. Now the converter configuration (ID, Baudrate, Parity) can be edited. By placing the mouse pointer on each item, configurable values are shown. The settings are reflected to MODBUS 485 RTU CONVERTER when “Send Config” button is clicked.
  • Page 18: Connect To Peripheral Device

    The converter can be connected to any peripheral device communicating through MODBUS 485 RTU. Up to 100 units can be put in parallel and can be addressed individually. Pg. 17 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 19 7 - 2 . O p e r a t i n g The MODBUS 485 RTU communication data format is determined by the Modbus protocol. The commands are defined by the universal MODBUS RTU protocols. Table 7-1 Converter Configuration Contents...
  • Page 20 Same as above Same as above Same as above Same as above Node Number Baud Rate Parity Bit Pg. 19 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 21: Troubleshooting

    No change to made to converter Settings will only be active after writing the new settings. settings Log data function doesn’t display Check the connection any measured data Pg. 20 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 22: Specification

    9 - 2 . U S B C o n t r o l l e r a n d c o n f i g u r a t o r s o f t w a re Table 8-2. USB Controller RS-485 USB Controller / EKO Sense software Windows 7, 8 Weight 0,05 kg Cable 1m / Terminal block Pg. 21 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 23 9 - 2 . D i m e n s i o n s Unit in mm Figure 9-1. Dimensions Figure 9-2. Box Dimensions Pg. 22 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 24 8bit 8bit n * 8bit 16bit A silent interval interval (≧3.5 char) (≧3.5 char) Modbus Data (RTU) Table 7-4. Function Code Code: decimal Function Read Holding Registers Pg. 23 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 25 Linearity Correction Factor 2 - k2 DOUBLE Linearity Correction Factor 3 - k3 DOUBLE Linearity Correction Factor 4 - k4 81: Integer without 16 bits symbol. 82: Single precision floating point number Pg. 24 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 26 TC1(T) = a + b x T + c x T^2 + d x T^3 Where: ETC (E,T): Measuring voltage after correction Measuring voltage TC1(T): Correction Factor Measuring Temperature a, b, c, d: Correction Factor Pg. 25 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 27 Connect the A, B, and G terminal of connection cable to A, B, and G terminals on the Converter. Connect the other end to terminal numbers 1, 2, and G on RS-485/USB Converter. Then connect the USB cable of the RS-485/USB Converter to PC. Pg. 26 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 28: Converter Box

    Please contact EKO for more information about pre-configured converter boxes. Figure A-2. 2 units of Signal Converter in Converter Box2: Power Supply Line and Signal Line Wiring Pg. 27 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...
  • Page 29 Japan: www.eko.co.jp Europe: www.eko-eu.com USA: www.eko-usa.com Pg. 28 EKO INSTRUMENTS CO., LTD MODBUS 485 RTU CONVERTER Instruction Manual V1...

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