AC800M PM866 primary & secondary both controller failure while downloading new logic
Redundant controller AC800M PM866 went into fault status while the modbus program was downloaded.
Answer this question Follow
Check the firmware version
By navigate Right click on controller >>remote system >> show firmware version.
What was the logic change?
Looks like there was a fault generated during the download and the Modbus card is not responding or faulty, this in-turn has halted the controller and the OPC service. Physically check the status of the card, if in fault remove and re-insert and check if the fault clears. Contact or raise a support request with log files.
Other questions needing answers
AC 800M >
AC 800M >
Processor modules >
Application Knowledge Store (AKS) will no longer be available after the 31 July 2021.
We are enhancing our Customer and Partner experience and will be migrating data from AKS to the new portal.
During the transition please direct your questions to:
If you are an ABB customer with a CARE Agreement you can access our Customer Portal, where you can find solutions and ask questions, and communicate directly with ABB.
If you are not an existing CARE customer with ABB please contact your local ABB sales office.
For our authorised Partners you can directly access additional support information in the Partner Portal