FbAnIn Bad even in Simulation unless i write "0" at the Bad output

Hello Ashadako,

Bad = 1 (will set 1 only when Process value is not valid)

Few IOs of block like Bad, Mode.. of channel drivers works properly with actual CPU not with Simulator (PLCSIM)

The actual CPU gets the PV signals and Diagnose signal from connected IOs 

If your are testing with actual CPU and still getting Bad signal =1 one even after setting Simon=1 the please update your PCS7 V9.0.3 to PCS7 V9.0.3.5 (Update collection 5)

Below is the link for PCS7 V9.0.3 Upd5 
SIMATIC PCS 7 V9.0 SP3 Software Updates - UC05

Note: My systems are updated with PCS7 V9.0.3 upd5 and it is working fine.
Please refer the attached screenshot.