why do you think it is Index 12 ?
I am using the KV46F150M Controller. The Pins you can see in the following picture.
U_dcb is connected to Pin 11 and ADCA_CH1, so i would configure Index 1 in the ADC Read Block...
Is that correct ?
What do you think about this solution ?
The step Block has a step time of 3 seconds.
If the step time is reached or the value from the dc bus voltage is higher or equal than 3.3V * 80% = 2.64 (which is read by the adc read block index 1 ??) the digital Output will be set to high. Pin PTC13 is connected to the relay, you can see here: