1 Diagnostic viewer
The diagnostic viewer can provide some diagnostic information in case of CPU HALT.
2 System words
The following system words provide some information about the CPU HALT root cause.
%SW125
%SW126
%SW127
3 PLC Screen
The CPU HALT can be due to a Watdog overflow. In that case, the PLC screen provides information about the task which caused the CPU HALT.

Publicado para: Schneider Electric Portugal