Most errors (marked Exxx ) require an acknowledgment signal via the digital I/O interface or the software before the drive can be re-enabled.
: This might refer to a specific process parameter, a type of error related to a certain chemical or process condition, or it could stand for a specific diagnostic output. cmmo-st-c5-1-diop error codes
The 7-segment display on the front of the unit cycles through four characters to indicate current status, errors, or warnings: Most errors (marked Exxx ) require an acknowledgment
If you are working with Festo automation systems, specifically motor controllers, the is a workhorse. This servo drive is known for its reliability, but like all precision machinery, it communicates when things go wrong. This servo drive is known for its reliability,
Note: Since “cmmo-st-c5-1-diop” does not match a standard commercial HVAC, chiller, or VFD model from major brands (Carrier, Trane, Daikin, Mitsubishi, York), this post treats it as a (possibly a chiller module, PLC, or OEM board). I have written the post to be useful for technicians encountering an unknown or legacy error code system.
| Error Code (Hex) | Description | Troubleshooting Steps | | :--- | :--- | :--- | | | 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? |