Cmmo-st-c5-1-diop Error Codes -

The system displays a warning but operation continues. The warning disappears automatically once the cause is resolved.

Note the exact alternating characters shown on the front panel. Festo Support Portal Enter your device's part number ( cmmo-st-c5-1-diop error codes

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Look for mechanical resistance, such as a lack of lubrication on a ball screw or linear guide. The system displays a warning but operation continues

| Display Code | Category | Description | Common Cause(s) | Potential Remedy | | :--- | :--- | :--- | :--- | :--- | | | Error | CVE Connection Error | A connection error occurred while using "Control via Ethernet". | Check the Ethernet cable, connector, and ensure shielding is correct. A reset may be needed. | | 32h | Error | FCT Connection Lost | The connection between the FCT software and the controller was interrupted. | Check the physical connection and perform a reset if necessary. | | 33h | Warning | Output Stage Temperature Warning | The temperature of the power output stage has increased. | Check for mechanical binding, motor overload, or insufficient cooling. Reduce ambient temperature or improve airflow. | | 34h | Info/Error/Warning | Safe Torque Off (STO) | The STO safety function has been actively requested. This is often an informational status, not a system failure. | This is a normal response to an STO request; verify the status of your safety circuit. Refer to the STO-specific documentation for details. | | 37h | Warning | Standstill Monitoring | The actual axis position has left the "standstill window" after a positioning move was completed. | Check if the position-hold settings are too tight. Possibly a mechanical issue is causing the axis to drift from the target position. | | 38h | Error | Parameter File Access | A process is trying to access the parameter file while it is blocked by another procedure (e.g., a download). | Wait for the current file process to complete. Ensure at least 3 seconds between parameter file downloads. | | 39h | Warning | Trace Warning | An error occurred during a trace recording session. | Start a new trace recording. If set as a warning, it will clear automatically once a new trace is started. | | 3Ah | Error | Homing Timeout | The homing procedure failed because a limit switch was not found within the expected time frame. | Verify the electrical connections and the configuration of the limit/home switches. | | 3Bh | Error | Homing Method Invalid | The homing method selected in the settings is not valid for the current operation mode (e.g., in open-loop control). | Choose a permitted homing method for your specific setup. | | 3Ch | Error | Two Edges in One Cycle | Two separate input signals (e.g., for starting two records) were received in the same I/O read cycle. | Modify the PLC program to ensure a time delay (at least 2ms) between two edges. | Festo Support Portal Enter your device's part number

Provides immediate, high-level error codes directly on the unit.

The connection to the master controller (e.g., PLC) was lost during operation. Check Ethernet cables and timeout settings in the Festo Configuration Tool (FCT) 3. Diagnostic Tools