CC-Link IE Field Network – Analog I/O Configuration Guide

Configuring CC-Link IE Field Network for Analog I/O allows you to manage continuous signals such as voltage, current, temperature, or pressure in your Mitsubishi PLC network. Analog I/O modules collect data from sensors or control actuators, making them essential for applications requiring precise adjustments. This guide provides a step-by-step approach to configuring CC-Link IE Field Network for analog inputs and outputs, covering system setup, module configuration, and operation verification.

1. Overview of CC-Link IE Field Network

The CC-Link IE Field Network is designed to integrate analog data into the Mitsubishi PLC system, enabling smooth communication with devices that produce variable signals.

Key Components:

• Analog I/O Modules: Collect or transmit variable data like current, voltage, or temperature from sensors and to actuators.
• CC-Link IE Network Module: Connects the PLC to the CC-Link IE network, facilitating communication between the PLC and analog I/O modules.
• PLC: The central unit that processes analog data and sends control commands based on program logic.
• Sensors and Actuators: Devices that require analog inputs or outputs to communicate with the control system (e.g., pressure sensors or variable-speed drives).

2. Setting Up the Network Topology for Analog I/O

When configuring CC-Link IE Field Network for analog I/O, select a topology that meets your system’s requirements. Options include line, star, and ring configurations.

Recommended Topologies:

• Line Topology: Suitable for straightforward systems, with devices connected sequentially.
• Star Topology: Connects all devices to a central hub, minimizing latency and making maintenance more manageable.
• Ring Topology: Provides redundancy, ensuring communication continuity even if one segment fails.

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3. Connecting and Configuring the Network Module

To enable data exchange, install and configure the CC-Link IE Network Module on the PLC.

Steps for Configuration:

1. Install and Connect the Network Module: Attach the CC-Link IE network module to the PLC and connect it using Ethernet cables.
2. Set IP Addresses: Each device on the network, including analog I/O modules, needs a unique IP address.
3. Adjust Communication Parameters: Configure baud rate, data refresh rate, and other communication settings in the programming software.

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4. Adding and Configuring Analog I/O Modules

Analog I/O modules must be configured within the CC-Link IE Field Network to accurately collect and transmit data.

Adding Analog I/O Modules:

1. Open Network Configuration Tool: In GX Works3 or the appropriate network setup software, access the CC-Link IE Field Network settings.
2. Add Analog I/O Devices: Select each analog module’s model number, and add it to the network setup. Assign a unique station number to each.
3. Set Up Input/Output Ranges: Define input/output signal ranges (e.g., 0-10V or 4-20mA) depending on the specific requirements of your devices.
4. Assign Device Addresses: Configure addresses for each analog channel to enable precise data mapping to the PLC.

Calibration and Range Settings:

• Range Configuration: Set the input/output range to match sensor specifications. This step ensures accurate readings and control.
• Scaling: Define scaling parameters if your analog data requires conversion to engineering units (e.g., temperature or pressure).

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5. Mapping Analog Inputs and Outputs in the PLC

Mapping ensures that the PLC can read analog inputs and control outputs through specific device addresses.

Steps of Mapping:

1. Access the I/O Mapping Section: In GX Works3, go to I/O mapping and link each analog module’s addresses to the PLC’s internal addresses.
2. Assign Descriptive Labels: Use labels like “Temperature Sensor” or “Valve Control” for easy reference during programming.
3. Configure Data Conversion: Apply any necessary scaling or conversion formulas to interpret analog data correctly in engineering units.

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6. Testing Analog I/O Communication

After configuration, test the analog I/O setup to confirm that signals flow correctly between devices and the PLC.

Testing Procedure:

1. Activate Network Communication: Enable the network in the software to begin data transmission between the PLC and analog I/O modules.
2. Verify Input Readings: Monitor input values in real-time to ensure they reflect sensor readings accurately.
3. Test Output Control: Send test commands to control analog outputs (e.g., adjusting a control valve) and confirm the device responds as expected.
4. Check Status LEDs: Verify that LED indicators on the modules show normal communication status, and check for any errors.

Simulated Conditions:

• Run simulation tests to observe how your setup reacts to varying input values. This step is especially valuable for analog I/O as it checks the system’s response to fluctuating signals, such as temperature changes or varying motor speeds.

7. Troubleshooting Common Issues

Analog I/O can experience issues like noise interference, incorrect signal ranges, or communication errors.

Troubleshooting Tips:

• Verify Address Configuration: Check that addresses in the PLC program match those in the network configuration.
• Check for Noise Interference: Analog signals can be affected by electromagnetic interference. Use shielded cables and ensure proper grounding.
• Incorrect Signal Range: Confirm that the signal range set in the software matches the connected device’s specifications.
• Module Status Indicators: Use module LEDs to identify issues such as disconnected cables or invalid signals.

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Conclusion