HD67E51-2-A1 EtherCAT Master to Modbus RTU Master RS232 – industrial protocol converter

Industrial EtherCAT Master to Modbus RTU Master RS232 converter.

HD67E51-2-A1 is an industrial protocol converter designed to integrate EtherCAT Master networks with devices communicating using Modbus RTU Master over RS232. The device enables centralized management of Modbus RTU communication from an EtherCAT-based control system, ensuring high performance and deterministic data exchange in industrial automation environments.

The converter operates as an EtherCAT Master, managing communication with other EtherCAT devices in the network, while simultaneously acting as a Modbus RTU Master on the RS232 serial interface. This architecture allows multiple Modbus RTU devices to be integrated into EtherCAT-based systems without the need for additional intermediate controllers.

The HD67E51-2-A1 model is equipped with two RJ45 Ethernet ports featuring an internal EtherCAT switch, enabling input and output EtherCAT connection within a single network line. The Modbus RTU interface is implemented via a 3-pin 5 mm terminal block supporting RS232 communication.

Thanks to its robust industrial design and high environmental resistance, the converter operates reliably across a wide temperature range from -40°C to +85°C. The use of industrial-grade components ensures stable and long-term operation in demanding production and infrastructure applications.

Device configuration is performed using the dedicated SW67E51 software. The tool allows configuration of EtherCAT and Modbus RTU communication parameters, management of connected devices, and definition of data exchange cycles according to application requirements.

Product features

• EtherCAT Master for centralized EtherCAT network control
• Modbus RTU Master over RS232 interface
• Two RJ45 Ethernet ports with integrated EtherCAT switch
• Terminal block connectors for Modbus and power supply
• DIN rail mounting (35 mm)
• Wide operating temperature range from -40°C to +85°C
• AC and DC power supply for flexible system integration

Technical specification

• Model: HD67E51-2-A1
• Function: EtherCAT Master / Modbus RTU Master
• Modbus interface: RS232
• EtherCAT protocol: EtherCAT Master
• Modbus RTU data rate: up to 115200 bps
• EtherCAT data rate: auto-sensing 10/100 Base-T
• Modbus connector: 3-pin 5 mm terminal block
• EtherCAT connector: RJ45
• Power supply: 8..24 V AC or 12..35 V DC
• Power supply connector: 2-pin 5 mm terminal block
• Operating temperature: -40°C to +85°C
• Dimensions: 120 x 23 x 107 mm
• Weight: approx. 200 g
• Mounting: DIN rail

HD67E51-2-A1 is an efficient solution for centralized integration of EtherCAT-based systems with Modbus RTU RS232 devices in industrial automation applications. Its EtherCAT Master functionality, compact DIN rail housing, and flexible configuration make it well suited for machine control systems, production lines, and complex industrial installations.

If you have questions regarding device selection, configuration, or testing, contact the Consteel Electronics team .