BECKHOFF EL600x/EL602x Serial Port Module Debugging Manual
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Au:FANS
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DA:2026-06-18
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51 Br:
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In industrial automation sites, serial communication remains an important way to connect devices such as sensors, barcode scanners, GPS clocks, and frequency converters. The Beckhoff EL600x (RS232) and EL602x (RS422/RS485) series EtherCAT serial port terminal modules are an ideal choice for serial device integration in EtherCAT systems due to their flexible baud rate configuration, 864 byte receive buffer, and optional transmission rate optimization function. However, when faced with practical issues such as setting RS485 bus terminal resistance, switching between half duplex/full duplex modes, TwinCAT process data mapping, and firmware version compatibility, engineers often need a systematic practical guide. This article is based on official technical documentation and presents a comprehensive professional manual covering model identification, installation and wiring, CoE parameterization, process data configuration, firmware updates, and fault diagnosis.
The upper level application (such as serial debugging assistant) will set the baud rate/data frame by itself, which will override the parameters in the CoE. Therefore, ensure that the driver version supports the required baud rate (1.18 and above support Explicit baud).
If opening the COM port fails, check the CoE error message in the ADS recorder, which may be an unsupported baud rate combination.
Maintenance and environmental disposal
Cleaning: Use only a soft cloth dipped in glass cleaner or alcohol to wipe the front panel, and do not use compressed air, steam, or abrasives.
Scrap: Dispose of according to electronic waste regulations, recycle circuit boards and electronic components separately, and send plastic parts for plastic recycling.
