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[Technical Tips] Build a CIMON SCADA Monitoring and Control System with QEC-M-02 via Modbus TCP

2026-08-28

Modern industrial automation systems need a clear way to monitor field devices, issue commands, and diagnose communication status from one operator interface. This Technical Tip explains how to connect a QEC-M-02 to CIMON SCADA through Modbus TCP and use it as the control bridge for local I/O, EtherCAT remote I/O, Modbus RTU devices, and one stepper motor axis.

QEC_SCADA

In this Start Guide, we will demonstrate how to establish a connection between CIMON SCADA and the QEC-M-02 via Modbus TCP, and how to monitor and control I/O devices and motors through the SCADA interface.


Advantages of the Start Guides

  • Complete monitoring and control architecture

    See how CIMON SCADA, Modbus TCP, QEC-M-02, EtherCAT SubDevices, and field equipment work together.

  • Four practical control examples

    Test local I/O, remote EtherCAT I/O, an external Modbus RTU I/O board, and a stepper motor axis.

  • Reusable Modbus address mapping

    Use a clear Coil, Discrete Input, and Holding Register map when creating CIMON Tags and communication blocks.

  • CIMON project workflow

    Follow the setup from I/O Device creation through Tag configuration, graphics editing, and CimonX runtime verification.

  • Troubleshooting

    Common issues and solutions to help users quickly resolve development problems.


Start Using QEC-M-02 with CIMON SCADA

Before using the example programs, please make sure 86Duino IDE and CIMON SCADA have been installed correctly.If the environment is not ready yet, please refer to the user manual for the installation instructions.

Click the links below to explore the available guides:


System Architecture

The Windows PC running CimonD and CimonX communicates with QEC-M-02 over standard Ethernet. QEC-M-02 receives Modbus TCP requests, maps the requested values to the correct device function, and returns status data to the SCADA project.

QEC-M-02-Architecture
  • QEC-M-02: Modbus TCP Slave and EtherCAT MDevice.
  • QEC-R11CFFG: EtherCAT compound I/O module with digital I/O and a serial COM port.
  • QEC-R11MP3S: Three-axis stepper motor controller; one axis is used in this example.

Four Application Examples

The following four application examples demonstrate how CIMON SCADA communicates with the QEC-M-02 via Modbus TCP to control local I/O, remote EtherCAT I/O, external Modbus RTU I/O, and a single-axis stepper motor.

Example1. QEC-M-02_IO_Control

CIMON writes Coil commands to QEC-M-02 local DO0–DO3 and reads DI0–DI3 through Discrete Inputs. This is the simplest example for confirming the Ethernet connection and basic Modbus TCP address mapping.

QEC-M-02-example1

Example2_QEC-R11CFFG_IO_Control

QEC-M-02 receives commands from CIMON through Modbus TCP and transfers them to QEC-R11CFFG through EtherCAT. The remote output state is returned to CIMON for monitoring.

QEC-M-02-example2

Example3_Modbusl_IO_Control

The command path extends from CIMON to QEC-M-02, then through EtherCAT to the QEC-R11CFFG COM port, and finally to an external Modbus RTU I/O board.

QEC-M-02-example3

Example4_QEC_R11MP3S_Motor_Control

CIMON provides Enable, Disable, Jog+, Jog−, and Stop commands while displaying the motor position, operating state, command result, and EtherCAT status.

QEC-M-02-example4

Featured Products QEC-M-02:

  • Built-in 86Duino IDE for C/C++ programming with library support
  • Dedicated core for real-time EtherCAT MDevice communication
  • HDMI display (1280 x 720 x 256) with graphical library support
  • 16-channel isolated digital input and 16-channel isolated digital output
  • Operating temperature: -20°C to +70°C (optional -40°C to +85°C)
  • Supports EtherCAT, Giga LAN, USB, COM, HDMI, Rotary switch, and RUN/STOP switch

Featured Products QEC-RXXCFFG:

  • EtherCAT Conformance test tool verified
  • Isolated 16-channel Digital Input and 16-channel Digital Output
  • Digital Output Load Voltage Rating Up to 60VDC
  • Support 1-channel of 16-bit DAC and 1-channel of 16-bit ADC Interface
  • Support one standard RS232/485 Serial port
  • Support EtherCAT Distributed Clock (DC) Mode and SM Mode
  • Internal Monitoring Hardware Information

Featured Products QEC-RXXMP3S:

  • Support Drive Profile with CiA402 and G-codet
  • 3 stepper motors (2-phase bipolar stepper motor)
  • Drive current up to 4.5A, peak 5.0A (Adjustable by Switch)
  • Encoder interfaces (A, B, Z), differential
  • Automatic current reduction when the motor is not moving
  • Internal Monitoring Hardware Information
  • EtherCAT Conformance test tool verified
  • Operating Temperature -20 to +70 °C

For more information or to request a sample, please email us at info@icop.com.tw, contact your nearest ICOP Branches, or get in touch with our Worldwide Official Distributor.

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