could occur, if your task [...] because of a watchdog error
>Software watchdog of IEC-task [...] watchdog of all IEC-tasks [...] </description> RTSEXCPT_WATCHDOG UDINT
-Manager. DRVPROP_WATCHDOG DWORD [...] TO the IoDrvWatchdog [...] function IoDrvWatchdog
for APCTL task [...] for CMCTL task [...] for MGT task