ST600 | Err.66 – What does this error message mean, and what can be done?
If the error message Err.66 appears on the display of the frequency inverter, it indicates a timeout error in communication with the EtherCAT card.
Causes:
- No data transmission is occurring between the communication card and the host system (e.g. PLC).
Solutions:
- Check whether the wiring to the communication card is loose or disconnected.
If none of these causes apply, please contact technical support.
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