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If the error persists after tuning, measure the motor cable resistance from the drive’s X2 connector to the motor. A common unnoticed failure is a broken shield drain wire causing EMI-induced step corruption at high microstepping (e.g., 1/256).
Errors are shown as:
Common status word bits for errors (IO-Link mode): | Bit | Meaning | |------|-----------------------------| | 0 | Ready | | 1 | Enable | | 2 | Fault (general) | | 3 | Positioning active | | 4 | Target reached | | 5+ | Device-specific errors (voltage, temperature, following error, etc.) | cmmo-st-c5-1-diop error codes
The CMMO-ST error system is categorized into classes. Understanding the class helps determine the severity. If the error persists after tuning, measure the
| Error Code (Hex) | Description | Troubleshooting Steps |
| :--- | :--- | :--- |
| 0xA000 | Parameter Set Invalid | 1. Configuration parameters are out of range or corrupted.
2. Perform a "Load Default Parameters" via the web interface or Festo Configuration Tool (FCT). |
| 0xA010 | Node ID Conflict | Two devices on the network have the same address.
1. Check rotary switches on the front of the CMMO-ST.
2. Ensure unique addresses. |
| 0xB0xx | Fieldbus Error (EtherNet/IP / PROFINET) | 1. Check Ethernet cable connections and link lights.
2. Verify IP address settings (DHCP vs Static).
3. Check PLC master configuration; does it match the GSDML file? | Errors are shown as:
A: This is the software thermal model (10 flashes). The drive calculates temperature based on current * time. Even if the case is cool, the internal chips may be hot. Reduce the Motor Standstill Current to 50% of rated current.