Siemens Tia programming tool sometimes have a problem with timers not starting after the return of power. This happens bacuase the conditions don’t change after the reset. I had this happen a couple of times the last couple weeks working on a older project. Here under I will show you a simple way to Fixing stuck timers TIA 14 to 16.
The poweron after a powercut.
Fixing stuck timers TIA 14 to 16 timers not starting to count can be fixed quite easily. The conditions just have to be restarted at the powerup. This can be done using the systembit FirstScan which go High on the first scan of the program.