Error description 320-0FC4

Error message

System overload – message buffer is full

Cause of error

Very many small jobs were sent in a short time to the PLC run-time system. As a result, the associated messages could no longer be delivered in the system.
These jobs result from calling PLC modules or calling the Python function library for OEM applications.
The capacity for buffering the messages in the system has been exhausted; the PLC program has been stopped.

Error correction

Change the PLC program or the OEM application
Distribute the calls from PLC modules or functions of the JH function library in Python OEM applications more evenly over time.