Can we see how much CPU load is there on M241/M251/M262?

Yes, there is a way to return the CPU processor load using a Library called CmpSchedule.

In the Libraries->Add Library dialog, you will find it under Company->System under System->SysLibs:


The function in the library that returns processor load is SchedGetProcessorLoad:


An example of the program is as follows in Structured Text:

Declaration:
VAR
pResult1   : RTS_IEC_RESULT;  //required pointer to the internal data location type (variable name is arbitrary)
processorLoad : UDINT;      //CPU load percentage
END_VAR

Code:
processorLoad := SchedGetProcessorLoad(pResult:=ADR(pResult1));

Note:

• The value returned in "processorLoad" in his example is is a percentage (in UDINT format).
• It is recommended that processorLoad should remain lower than 70% (the lower the better). If this is not the case, then increase cycle times.

Publicerad för: Schneider Electric Sverige