Mitsubishi Electric Q-series Programmable Controller

This fault code signifies a special parameter error detected within a CPU module, such as a Q06UDH. It indicates that an issue exists with the configuration or data integrity of a special parameter, potentially disrupting normal CPU operation. The error is identifiable in the 'Current Error' section of the System Monitor and requires specific troubleshooting steps to resolve.

This error code signifies a stop error originating from QCPU No. 1 in a multiple CPU system. When this occurs, other QCPUs/motion CPUs (No. 2 to 4) also experience a 'MULTI CPU DOWN' error, leading to the complete halt of the entire multiple CPU system. This fault indicates that the primary CPU has encountered a critical issue, preventing further execution across all involved CPUs.