| Error Code (Hex) | Description | Troubleshooting Steps | | :--- | :--- | :--- | | | General Hardware Fault | 1. Power cycle the controller. 2. Check for loose wiring on the power connector. 3. If persists, the internal power stage is likely damaged (replace unit). | | 0x8101 | Undervoltage | 1. Measure the 24V DC supply; ensure it is > 21.6V. 2. Check cable length and wire gauge (voltage drop). 3. Check for short circuits in the peripheral wiring. | | 0x8102 | Overvoltage | 1. Measure supply voltage; ensure it is < 30V. 2. If using a regenerative braking resistor, verify it is connected correctly to absorb back-EMF during deceleration. |
Last updated: Valid for firmware versions 3.0.x through 3.4.x. For legacy v2.x codes, contact Festo support with your drive serial number. cmmo-st-c5-1-diop error codes
The CMMO-ST uses a standardized error-handling system common across Festo motor controllers. Errors are generally categorized by their "Group" (the first two digits) and "Number" (the last three digits). You can view these codes in the Festo Configuration Tool (FCT) or via the device's web server. Common Error Code Categories Description Typical Issues Hardware / System | Error Code (Hex) | Description | Troubleshooting