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elco FX20 Series User Manual

Modular i/o system
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FX20 series Modular I/O System
User Manual
Modbus TCP
Version 1.1, 2025-02-12
Tianjin Elco Automation Co.,Ltd
 

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  • Page 1     FX20 series Modular I/O System User Manual Modbus TCP Version 1.1, 2025-02-12 Tianjin Elco Automation Co.,Ltd  ...

  • Page 2: Table Of Contents

    FX20 Series Modular I/O System User Manual for MODBUS TCP   Content Product introduction ................3 Version change record ............... 3 About obtaining manuals ..............3 Warranty statement ................4 Precautions ..................4 5.1. Safety statement ................4 5.2. Definition of safety level ..............4 5.3.
  • Page 3 FX20 Series Modular I/O System User Manual for MODBUS TCP   8.2.9. 16-channel DO PNP module wiring diagram and I/O process data 8.2.10. 16-channel DO NPN module wiring diagram and I/O process data 8.2.11. 32-channel DI module wiring diagram and I/O process data 8.2.12.

  • Page 4: Product Introduction

      1. Product introduction The FX20 series modular I/O system is a new generation IP20 extensible I/O product launched by Elco. It’s composed of bus adapters, I/O modules and functional modules, with a module least width of only 15mm, which is thin and compact, greatly saving space inside the control cabinet.

  • Page 5: Warranty Statement

      4. Warranty statement Under normal use, if the product malfunctions or is damaged, Elco will be responsible for an 18 months warranty (from and subject to the delivery date; executed according to the agreement, if there is a contract). When it’s over 18 months, maintenance fees will be charged.

  • Page 6: When Installing

    FX20 Series Modular I/O System User Manual for MODBUS TCP   Risk of electrical Information tips shock Only authorized electrical personnel General tips can operate Only authorized mechanical Earthing personnel can operate When designing control systems Dangerous ! Please be sure to design a safety circuit to ensure that the control system ...

  • Page 7: During Operation And Maintenance

    FX20 Series Modular I/O System User Manual for MODBUS TCP    During installation, avoid metal shavings and wire ends falling into the ventilation hole of the controller, which may cause fire, malfunction, and mis- operation; Caution !  After installation, ensure that there are no foreign objects on the ventilation surface, otherwise it may cause poor heat dissipation, fire, malfunction, and mis-operation；...
  • Page 8 FX20 Series Modular I/O System User Manual for MODBUS TCP   electrical equipment and have sufficient electrical knowledge can carry out the maintenance;  Do not touch the terminals when powered on, otherwise it may cause electric shock or malfunction;...

  • Page 9: Fx20 Product Introduction

    FX20 Series Modular I/O System User Manual for MODBUS TCP   6. FX20 Product Introduction 6.1. Appearance and function of MODBUS TCP bus adapter ○   ○   ○   ○   ○ ○     ○   ○  ...

  • Page 10: Fx20 Modbus Tcp Adapter Technical Specifications

    FX20 Series Modular I/O System User Manual for MODBUS TCP   System grounding Rotary switches Set IP address 6.2. FX20 MODBUS TCP adapter technical specifications Ordering data Model FX20-GW-PN00 Description MODBUS TCP adapter System data Communication protocol MODBUS TCP Bus communication medium Cat.5 cable...

  • Page 11: Fx20 Adapter Profile Drawing

    FX20 adapter profile drawing   FX20 adapter   FX20 adapter end cover The FX20 series consists of adapters, I/O modules, and end cover, which is only used for protection and is shipped together with the adapter.   6.4. Introduction to the appearance of I/O modules 6.4.1.
  • Page 12 FX20 Series Modular I/O System User Manual for MODBUS TCP   Red and green blinking:   Backplane communication abnormal; Green: input “1” 00-07 Input signal indicator Off: input “0” Press the device to Terminal disassembly separate the terminal device block from the module...
  • Page 13 FX20 Series Modular I/O System User Manual for MODBUS TCP   6.4.1.3. 8-channel digital output modules ○   ○   ○ 7   ○   ○   ○ ○     Item Name Function Status Module running indicator Green: normal;...
  • Page 14 FX20 Series Modular I/O System User Manual for MODBUS TCP   6.4.1.4. 8-channel digital output module technical specification Ordering data Model FX20-DO-BF00 FX20-DO-BF50 8-channel output module 8-channel output module Description PNP type NPN type Electrical data Output channel Output type Output current Max.
  • Page 15 FX20 Series Modular I/O System User Manual for MODBUS TCP   6.4.1.6. 8-channel digital relay output modules   ○   ○ ○     ○   ○   ○ ○     Item Name Function Status Module running indicator Green: normal;...
  • Page 16 FX20 Series Modular I/O System User Manual for MODBUS TCP   6.4.1.7. 8-channel digital relay output modules technical specification  Ordering data Model FX20-DO-RF00 FX20-DO-RF50 8-channel output module 8-channel output module Description AC Solid state relay Mechanical relay Electrical data Output channel...

  • Page 17: 16-Channel Digital Input Output Module

    FX20 Series Modular I/O System User Manual for MODBUS TCP   6.4.2. 16-channel digital input output module 6.4.2.1. 16-channel digital input module ○   ○   ○     ○         ○          ...
  • Page 18 FX20 Series Modular I/O System User Manual for MODBUS TCP   Ordering data Model FX20-DI-BH60 Description 16-channal input module PNP/NPN Electrical data Input channel Input type PNP/NPN Input signal '0' DC 0-5 V Input signal '1' DC 18-30 V Input current typ.
  • Page 19 FX20 Series Modular I/O System User Manual for MODBUS TCP   Green: normal Red: Module channel error Green blinking:   Connected but not Module error indicator configured; Red and green blinking:   Backplane communication abnormal; 00-07 Green: output “1” Output signal indicator 10-17 Off: output “0”...

  • Page 20: 32-Channel Digital Input Output Module

    FX20 Series Modular I/O System User Manual for MODBUS TCP   5%-95%，no condensation Relative humidity Work altitude 0-2000 m Weight Dimension（H×W×D） 110 mm×15 mm×79 mm 6.4.2.5. 16 digital input output module profile drawing   6.4.3. 32-channel digital input output module 6.4.3.1.
  • Page 21 FX20 Series Modular I/O System User Manual for MODBUS TCP   abnormal; 00-07，10-17 Green: output “1” Input signal indicator 20-27，30-37 Off: output “0” Press the device to Terminal disassembly separate the terminal device block from the module IO input terminal 00-07，10-17，...
  • Page 22 FX20 Series Modular I/O System User Manual for MODBUS TCP   6.4.3.3. 32-channel digital output module ○   ○   ○ 7     ○         ○         ○ ○     Item Name...
  • Page 23 FX20 Series Modular I/O System User Manual for MODBUS TCP   6.4.3.4. 32-channel digital output module technical data Ordering data Model FX20-DO-BL00 FX20-DO-BL50 Description 32 digital output module 32 digital output module PNP type NPN type Electrical data Output channel...

  • Page 24: 4-Channel Analog Input/Output Module

    FX20 Series Modular I/O System User Manual for MODBUS TCP   6.4.4. 4-channel analog input/output module 6.4.4.1. 4-channel analog input module ○ 9   ○   ○ 10   ○   ○ ○     ○ ○     ○...
  • Page 25 FX20 Series Modular I/O System User Manual for MODBUS TCP   position Backplane bus Backplane communication expansion interface 6.4.4.2. 4-channel analog input module technical data Ordering data Model FX20-AI-BD60 Description 4-channel voltage and current mixed input module Electrical data Input channel 0-10 V，+/-10 V，1-5 V，0/4-20 mA，+/-20 mA...
  • Page 26 FX20 Series Modular I/O System User Manual for MODBUS TCP   indicator Red: I/O power supply abnormal; Off: no backplane power Green: normal Red: Module channel error Green blinking:   Connected but not Module error indicator configured; Red and green blinking:  ...
  • Page 27 FX20 Series Modular I/O System User Manual for MODBUS TCP   General data Protection grade IP20 Assembly method Standard 35mm DIN rail installation, indoor use only Working temperature: -5℃ to +60℃ Temperature range Storage temperature: -25 ℃ to +70 ℃...
  • Page 28 FX20 Series Modular I/O System User Manual for MODBUS TCP   indicator Red: I/O power supply abnormal; Off: no backplane power Green: normal Red: Module channel error Green blinking:   Connected but not Module error indicator configured; Red and green blinking:  ...
  • Page 29 FX20 Series Modular I/O System User Manual for MODBUS TCP   Converting time 3 ms Measuring accuracy ±0.3% Current consumption (5V) 60 mA Process data length 16 bytes General data Protection grade IP20 Assembly method Standard 35mm DIN rail installation, indoor use only Working temperature: -5℃...
  • Page 30 FX20 Series Modular I/O System User Manual for MODBUS TCP   Red: output over range Press the device to Terminal disassembly separate the terminal device block from the module Analog output 1 Analog output Analog output 2 Analog output Analog output 3...
  • Page 31 FX20 Series Modular I/O System User Manual for MODBUS TCP   6.4.5.5. 8-channel analog input/output module profile drawing 6.4.6. 4-channel temperature measurement modules ○ 9   ○   ○ 10   ○   ○ ○     ○ ○  ...
  • Page 32 FX20 Series Modular I/O System User Manual for MODBUS TCP   measurement signal Red: input over range indicator Press the device to Terminal disassembly separate the terminal device block from the module Temperature Analog output measurement channel 0 Temperature Analog output...

  • Page 33: Auxiliary Power Module

    FX20 Series Modular I/O System User Manual for MODBUS TCP   Work altitude 0-2000 m Weight 63 g Dimension（H×W×D） 110 mm×15 mm×179 mm 6.4.6.1. 4-channel temperature measurement module profile drawing   6.4.1. Auxiliary power module ○   ○   ○...
  • Page 34 FX20 Series Modular I/O System User Manual for MODBUS TCP   terminal Pulling up: assembling Used to fix the module to position; Module fixing device the standard mounting rail Pressing down: locking position Backplane bus Backplane expansion interface communication Grounding terminal 6.4.5.1.

  • Page 35: Mechanical Installation And Disassembly

    FX20 Series Modular I/O System User Manual for MODBUS TCP   7. Mechanical installation and disassembly 7.1. FX20 adapter installation The installation is carried out according to the following steps: ① Pull out the fixing device  ③ Press down the fixing device ②...

  • Page 36: Modules Disassembly

    FX20 Series Modular I/O System User Manual for MODBUS TCP   The end cover is only to protect the backplane bus interface of the end module, and it is packaged and shipped together with the adapter. 7.3. Modules disassembly Use a flat screwdriver or similar tool to pry up the locking device on the rail, and then pull the module away from the DIN rail.

  • Page 37: Electrical Installation And Wiring

    "Connectivity System Catalog". 8.1.2. Power and signal cables The FX20 series adopts tool-free spring wiring terminals, and the wiring needs to be equipped with tube type cold pressing cable lugs. Please refer to the following figure for the stripping length and cable lug specifications: TIANJIN ELCO AUTOMATION CO.,LTD.

  • Page 38: Modules Wiring Diagram

    8.2. Modules wiring diagram 8.2.1. FX20 system power supply diagram The FX20 series backplane 5VDC power supply is provided by the adapter, and IO power supply for function module needs to provide separately. Additionally, an auxiliary power supply module can provide a larger backplane power supply current.
  • Page 39 FX20 Series Modular I/O System User Manual for MODBUS TCP   Warning！  Be sure to disconnect all power connections before wiring!  To ensure safety, must reliably connect the module grounding terminal to the ground! The wiring work must be operated by authorized electrical ...

  • Page 40: Bus Adapters Wiring Diagram

    FX20 Series Modular I/O System User Manual for MODBUS TCP   8.2.2. Bus adapters wiring diagram     8.2.3. 8-channel DI module wiring diagram and I/O process data   Model:FX20-DI-BF60 Input Terminal No. Byte 0 Address I n.7 I n.6 I n.5...

  • Page 41: 8-Channel Do Pnp Module Wiring Diagram And I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   8.2.4. 8-channel DO PNP module wiring diagram and I/O process data   Model:FX20-DO-BF00 Output Terminal No. Byte 0 Address Q n.7 Q n.6 Q n.5 Q n.4 Q n.3 Q n.2...

  • Page 42: 8-Channel Ssr (Ac) Output Module Wiring Diagram I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   8.2.6. 8-channel SSR (AC) output module wiring diagram I/O process data   Model:FX20-DO-RF00 Output Terminal No. Byte 0 Address Q n.7 Q n.6 Q n.5 Q n.4 Q n.3 Q n.2...

  • Page 43: 16-Channel Di Module Wiring Diagram And I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   Terminal No. Address n:Starting byte of configuration 8.2.8. 16-channel DI module wiring diagram and I/O process data   Model:FX20-DI-BH60 Input Terminal No. Byte 0 Address I n.7 I n.6 I n.5...

  • Page 44: 16-Channel Do Npn Module Wiring Diagram And I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   Model:FX20-DO-BH00 Output Terminal No. Byte 0 Address Q n.7 Q n.6 Q n.5 Q n.4 Q n.3 Q n.2 Q n.1 Q n.0 Byte 0 Bit 7 Bit 6...

  • Page 45: 32-Channel Di Module Wiring Diagram And I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   8.2.11. 32-channel DI module wiring diagram and I/O process data   Model:FX20-DI-BL60 Input Terminal No. Byte 0 Address I n.7 I n.6 I n.5 I n.4 I n.3 I n.2 I n.1...

  • Page 46: 32-Channel Do Pnp Module Wiring Diagram And I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   8.2.12. 32-channel DO PNP module wiring diagram and I/O process data   Model:FX20-DO-BL00 Output Terminal No. Byte 0 Address Q n.7 Q n.6 Q n.5 Q n.4 Q n.3 Q n.2...

  • Page 47: 32-Channel Do Npn Module Wiring Diagram And I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   8.2.13. 32-channel DO NPN module wiring diagram and I/O process data   Model:FX20-DO-BL50 Output Terminal No. Byte 0 Address Q n.7 Q n.6 Q n.5 Q n.4 Q n.3 Q n.2...

  • Page 48: 4-Channel Ai Module Wiring Diagram And I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   8.2.14. 4-channel AI module wiring diagram and I/O process data Voltage input Current input     Model:FX20-AI-BD60 Terminal No. Address IW n+2 IW n Channel Channel 1 Channel 0 Terminal No.

  • Page 49: 8-Channel Ai Module Wiring Diagram And I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   Model:FX20-AO-BD60 Terminal No. Address QW n+2 QW n Channel Channel 1 Channel 0 Terminal No. Address QW n+6 QW n+4 Channel Channel 3 Channel 2 n: Starting byte of configuration 8.2.16.

  • Page 50: 8-Channel Ao Module Wiring Diagram And I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   8.2.17. 8-channel AO module wiring diagram and I/O process data Voltage output Current output   Model:FX20-AO-BF60 Terminal No. Address QW n+2 QW n Channel Channel 1 Channel 0 Terminal No.

  • Page 51: 4-Channel Rtd Module Wiring Diagram And I/O Process Data

    FX20 Series Modular I/O System User Manual for MODBUS TCP   8.2.18. 4-channel RTD module wiring diagram and I/O process data Two-wire RTD Three-wire RTD   Model:FX20-AI-BD80 Terminal No. Address IW n+2 IW n Channel Channel 1 Channel 0 Terminal No.

  • Page 52: Auxiliary Power Module Wiring Diagram

    FX20 Series Modular I/O System User Manual for MODBUS TCP   Model:FX20-AI-BD90 Terminal No. Address IW n+2 IW n Channel Channel 1 Channel 0 Terminal No. Address IW n+6 IW n+4 Channel Channel 3 Channel 2 n: Starting byte of configuration  ...

  • Page 53: Configuration And Test

    FX20 Series Modular I/O System User Manual for MODBUS TCP   9. Configuration and test 9.1. IP address setting for Modbus TCP adapter The Modbus TCP adapter can easily set the IP address through rotary switches or web server. 9.1.1. Set the IP address through the rotary switches The Modbus TCP adapter can set the IP address through three rotary switches, with a range of 192.168.0.1~192.168.0.254, meaning that the rotary switches...

  • Page 54: Reset Ip Address

    FX20 Series Modular I/O System User Manual for MODBUS TCP   4) Enter the current IP address of FX20 in the address bar of the PC browser. If the current address of FX20 is 192.168.0.10, press enter to access the homepage of the FX20 Web server page;...

  • Page 55: Modbus Tcp Operation Instructions

    FX20 Series Modular I/O System User Manual for MODBUS TCP   9.2. MODBUS TCP Operation Instructions 9.2.1. Function code The function codes supported by the FX20 MODBUS TCP adapter are as follows: Code Function Unit Number Offset Read coil status...

  • Page 56: Error Code Query

    FX20 Series Modular I/O System User Manual for MODBUS TCP   codes address type 0x2000 0x0100 Word reading Read holding register 0x2000 0x0100 Word reading Read input register 9.2.2.4. AO modules data reading and writing Function Max. offset Operation Base address...

  • Page 57: Configuration Test Example

    FX20 Series Modular I/O System User Manual for MODBUS TCP   0x9500 0x06 4 bytes 2 registers 0x9500 0x08 4 bytes 2 registers 0x9500 (N-1)*2 4 bytes 2 registers 0x9500 0x3E 4 bytes 2 registers 9.2.4.2. Module Model and ID Comparison Table...

  • Page 58: Perform Module Function Testing On Fx20 Using Modbus Debugging Assistant

    FX20 Series Modular I/O System User Manual for MODBUS TCP   address is 192.168.0.100. 9.3.1. Perform module function testing on FX20 using MODBUS debugging assistant Open Net Assist, select "TCP Client" for network protocol, fill in the default IP address of FX20 coupler as "192.168.0.10" for network host address, fill in "502"...
  • Page 59 FX20 Series Modular I/O System User Manual for MODBUS TCP   Module 1:00 01 00, Module 2: 10 02 00 01, Module 3: A0 01 08 00,Module 4: B0 01 00 08.According to the "9.2.4 Module Type Comparison Table", module 1 model is FX20-DI-BF60, module 2 model is FX20-DO-BF50, module 3 model is FX20-AI-BD60, and module 4 model is FX20-AO-BD60.
  • Page 60 FX20 Series Modular I/O System User Manual for MODBUS TCP   make all channels of the module output high level, and the indicator lights for all output channels of the module are green and constantly on. b) Read command example Connect the digital output module one-to-one to the input module channel, and all channel indicator lights of the module will be constantly on.
  • Page 61 FX20 Series Modular I/O System User Manual for MODBUS TCP   From the above figure, it can be seen that the system has experienced overload by querying the "9.2.2 Error Code Description". By replacing "02" with a two-level value of "0000 0010", the error occurred in slot 2.

  • Page 62: Configure Module Parameters Through Web Server

    FX20 Series Modular I/O System User Manual for MODBUS TCP   9.3.2. Configure module parameters through web server The FX20 web server can easily set parameters for the FX20 analog modules and function modules. The following will take the analog modules as an example to explain the operation.
  • Page 63 FX20 Series Modular I/O System User Manual for MODBUS TCP   9.3.2.4. In the FX20-AI-BD60 4-channel analog input module config, the order of data byte high and low bits can be configured. It is necessary to decide whether to choose little endian (low byte is placed at the low...
  • Page 64 FX20 Series Modular I/O System User Manual for MODBUS TCP   9.3.2.6. In the FX20-AI-BD60 4-channel analog input module config, the filtering time can also be set, which is divided into five levels: extremely weak, weak, medium, strong, and extremely strong.
  • Page 65 FX20 Series Modular I/O System User Manual for MODBUS TCP   Set to 0: After network disconnection, the channel output value switches to 0; Set to substitute value: Set the output value as a substitute value after network disconnection; Hold the last value: Maintain the final output value after network disconnection;...

  • Page 66: Representation Of Analog Module Values

    Note: 1. Do not attempt to upgrade on your own unless necessary; 2. The upgrade file must be provided by the official ELCO company; 3. Do not power off during the upgrade process; 4. After the upgrade is completed, the FX20 power supply needs to be restarted.
  • Page 67 FX20 Series Modular I/O System User Manual for MODBUS TCP   20736 5100 15 mA 0.00362% 723.4 nA 0 mA FFFF -723.4 nA -75% -20736 AF00 -15 mA -100% -27648 9400 -20 mA -27649 93FF Overshoot range -118.519% -32768 8000 ≤...
  • Page 68 FX20 Series Modular I/O System User Manual for MODBUS TCP   27649 6C01 Overshoot range 100% 27648 6C00 20 mA 20 mA 20736 5100 15 mA 16 mA Rated range 0.00362% 723.4 nA 4mA+578.7nA 0 mA 4 mA -0.00362% FFFF Overshoot range -17.59%...
  • Page 69 FX20 Series Modular I/O System User Manual for MODBUS TCP   9.4.5. Analog value representation within the measurement range of PT x00 standard thermal resistance System value Current input range -200~+850 ℃ Decimalism Hexadecimal Overflow, locking max. 32767 7FFF ≥ 850.1 ℃...

  • Page 70: Fault Diagnosis

    FX20 Series Modular I/O System User Manual for MODBUS TCP   10. Fault diagnosis Name Status Meaning Recommended treatment Adapter indicator Green Normal None Power abnormal 1. Check if the polarity of the power wiring is correct; 2. Check if the power supply voltage is normal;...
  • Page 71 FX20 Series Modular I/O System User Manual for MODBUS TCP   Signal“1” 00-07/10-17 Green None Signal“0” None Analog I/O indicator Green Normal power 1. Check if the 24V wiring of the IO module is supply abnormal correct; 2. Check if the 24V power supply voltage of the IO module is normal;...

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