CC-Link IE Field Network Basic Connection Guide – Features and Operation

The CC-Link IE Field Network is an industrial Ethernet-based network that provides high-speed, reliable communication for automation systems. Known for its flexibility and robust performance, the network enables seamless integration of various devices like PLCs, HMIs, remote I/O, and servo systems. This guide highlights key features and operational principles of the CC-Link IE Field Network, offering a foundational understanding for implementing effective industrial communication.

---

---

Key Features of CC-Link IE Field Network

1. High-Speed Communication
   The CC-Link IE Field Network supports rapid data transfer, with speeds reaching up to 1 Gbps. This enables quick updates across devices, essential for systems requiring real-time communication, such as high-speed assembly lines or robotics.

1. Gigabit Ethernet-Based Protocol
   Utilizing a gigabit Ethernet backbone, the network provides enhanced bandwidth for simultaneous data transmission. This design supports a high volume of data, allowing multiple devices to communicate without compromising speed or reliability.
2. Flexible Topologies
   CC-Link IE Field Network supports several topologies, including star, ring, and line, to fit various industrial layouts. The ring topology, in particular, ensures redundancy: if one device loses connection, the data reroutes, maintaining overall system stability.
3. Large Device Capacity
   The network accommodates up to 254 stations, making it ideal for complex systems with numerous devices. This flexibility allows for scalability as additional devices can be easily incorporated into the network.
4. Seamless Integration of Analog and Digital I/O
   Supporting both analog and digital I/O modules, the CC-Link IE Field Network enables versatile control of processes, from digital switch signals to continuous analog signals like temperature or pressure.
5. Efficient Error Handling and Diagnostics
   Built-in diagnostic tools in the network allow operators to monitor device statuses, detect errors, and troubleshoot issues in real time. This feature reduces downtime by enabling proactive maintenance and swift resolution of problems.

---

Operating Principles of CC-Link IE Field Network

Understanding the operational flow of the CC-Link IE Field Network helps in effectively configuring and maintaining the system.

1. Cyclic and Transient Communication

• Cyclic Communication: This mode sends regular updates between the master station and connected devices, ensuring synchronization. It’s ideal for continuous monitoring, as devices share their status in each communication cycle.
• Transient Communication: Used for data that does not require constant updating, this mode transmits only when necessary, optimizing bandwidth. It’s suitable for one-time commands or data exchanges like parameter settings.

2. Network Configuration and Addressing

• Master and Slave Configuration: In the CC-Link IE Field Network, the master device (usually a PLC) controls data exchange, while slave devices (such as I/O modules) respond. The master initiates cyclic communication with each slave device.
• IP Address Assignment: Each device requires a unique IP address within the network’s range. Consistent addressing ensures that devices can communicate without conflicts.

3. Real-Time Monitoring and Diagnostics

Through tools like GX Works3 and Network Diagnostics, operators can monitor device activity, view error logs, and receive alerts for communication failures. Real-time monitoring helps maintain system reliability by allowing immediate response to any abnormalities.

4. Data Prioritization

CC-Link IE Field Network can prioritize data to ensure that time-sensitive commands, such as emergency stop signals, are processed without delay. This feature is crucial for safety applications where response time is critical.

---

Best Practices for Efficient Network Operation

1. Network Layout Planning
   Choose a topology that best suits your system’s needs and layout. For systems requiring high availability, the ring topology is recommended due to its redundancy.
2. Device Naming and Addressing Consistency
   Use clear naming conventions and a systematic IP addressing scheme to simplify troubleshooting and maintenance.
3. Regular Diagnostics
   Schedule periodic diagnostic checks to preemptively address potential communication issues and ensure smooth network operation.
4. Firmware Updates and Compatibility
   Regularly update device firmware to maintain compatibility and leverage new features or security enhancements introduced by Mitsubishi.

---

Troubleshooting Tips

• Connection Drops: Check cabling and confirm device IP addresses to ensure they do not conflict.
• Slow Response Times: Verify that high-priority data is correctly set for prioritization. Excessive transient communication can also slow the network.
• Device Unavailability: Use the diagnostics tool in GX Works3 to pinpoint the last known status of disconnected devices, and inspect physical connections.

---

Conclusion