Monitoring Function: CPU-Test

All the used arithmetic functions, interpolation routines and filters are checked continuously of both processors. If the calculated results are different, they calculate the same test again. If it is different a second time, the fault code "SG intern Ueberwachung Ebene 2 - Systemfehler" (P1602) is generated.

A second way to check the processor is to store critical variables with there complement. If they are inconsistent, the fault code is set as well.