Solution:

Actually, the CPU itself offer the WDT (Watch Dog Timer) function. The interval is around 1 second. Further, we also add a extra WDT chip to improve this function. The interval is around 1.6 second. Apart from AI modules use EXTERNAL WDT chip, all the modules only use the INTERNAL WDT function. A watchdog timer supervisory function will automatically reset ADAM-4000 series modules, reducing the need for maintenance. That's means if CPU doesn't reset the WDT within a specific interval, the WDT will reset the CPU automatically.