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ABB CM579-ETHCAT

The ABB CM579-ETHCAT (1SAP170902R0101) is an EtherCAT master communication module designed for ABB AC500 programmable logic controller (PLC) systems.

It provides a high-speed industrial communication interface between the AC500 controller and EtherCAT-compatible field devices. The module enables centralized control of distributed I/O stations, servo drives, motion control equipment and other industrial automation devices.

The CM579-ETHCAT is particularly suitable for applications requiring deterministic communication, synchronized equipment operation and efficient real-time data exchange.

It is configured through ABB Automation Builder and communicates with the AC500 processor through a dual-port memory interface.

Core Functions

• EtherCAT Master Communication: Manages communication between the AC500 PLC and connected EtherCAT slave devices.

• Real-Time Data Exchange: Transfers process data between controllers, remote I/O stations and field equipment.

• Distributed I/O Management: Supports integration with compatible EtherCAT remote I/O interfaces.

• Motion Control Integration: Provides communication support for centralized machine and motion control applications.

• Network Configuration: Allows EtherCAT network configuration through ABB Automation Builder.

• Diagnostic Monitoring: Uses status indicators and communication diagnostics to help identify network faults.

• Non-Volatile Configuration Storage: Saves communication configuration in Flash EPROM memory.

Technical Parameters

Product Features

1. EtherCAT Master Capability

Functions as the EtherCAT master in an ABB AC500 PLC system, coordinating communication with connected EtherCAT slave devices.

2. High-Speed Communication

Supports 10 and 100 Mbit/s transmission rates, providing efficient data exchange for industrial automation and motion control applications.

3. Dual RJ45 Interfaces

Provides two RJ45 communication interfaces. ETHCAT1 is used for EtherCAT master communication, while ETHCAT2 is reserved for future extensions.

4. Distributed I/O Integration

Supports communication with compatible CI511-ETHCAT and CI512-ETHCAT interface modules, allowing distributed I/O equipment to be integrated into the control system.

5. Motion Control Applications

Can be used with ABB AC500 PLC motion control libraries to support centralized machine control and coordinated motion applications.

6. Flexible Network Configuration

Supports configurable bus behavior, distributed clock settings, target bus states and slave fault-handling options.

7. Diagnostic Indicators

Five front-panel LEDs provide operating and communication status information, helping engineers identify faults during commissioning and maintenance.

Hardware Composition

The ABB CM579-ETHCAT mainly consists of the following functional components:

• EtherCAT Communication Controller: Handles EtherCAT master communication and network data processing.

• Dual-Port Memory Interface: Provides data exchange between the communication controller and AC500 processor.

• Ethernet Interface: Provides two RJ45 connectors for EtherCAT network connections.

• Status Indicator Unit: Includes five LEDs for power, readiness, operating status and communication diagnostics.

• Address Switches: Two rotary switches are provided on the front panel; they are not used for normal EtherCAT address configuration.

• Flash Memory: Stores communication configuration data in non-volatile memory.

• Module Connection Interface: Connects the communication module to the AC500 CPU terminal base.

Typical Applications

• Industrial automation systems

• ABB AC500 PLC control systems

• EtherCAT distributed I/O networks

• Servo drive and motion control systems

• Automated production machinery

• Packaging and material handling equipment

• Robotics and machine automation

• Manufacturing process control

• High-speed industrial communication networks

Maintenance Considerations

• Check the 24 V DC supply and CPU terminal base connections.

• Inspect both RJ45 communication ports and Ethernet cables.

• Use ETHCAT1 for the EtherCAT master network connection.

• Configure the EtherCAT network using ABB Automation Builder.

• Verify slave device configuration and communication status.

• Check the five status LEDs when troubleshooting communication faults.

• Confirm compatibility with the AC500 processor and connected EtherCAT slave modules.

• Back up the communication configuration before replacing the module.

Important: ABB documentation specifies that the second RJ45 port, ETHCAT2, is reserved for future extensions. It should not be assumed to provide a second independent EtherCAT network connection.

Overall Evaluation

The ABB CM579-ETHCAT 1SAP170902R0101 is a dedicated EtherCAT master communication module for ABB AC500 PLC systems. It provides high-speed industrial communication, distributed I/O integration and support for centralized motion control applications.