LED Blinking Issue in TIA Portal
Hello everyone,
I am working on a TIA Portal program to make a LED blink twice repeatedly when the START button is pressed. I have implemented 3 networks, described below:
- Network-1
- Contains a simple holding circuit (NO in parallel with the START input).
- The address M0.2 (Timer supply) powers the next network.
- Network-2
- Uses M0.2 as a power source for two timers connected in parallel:
- TP (Timer Pulse): Set to 2 seconds to keep M0.5 (LED) active for this duration.
- TON: Controlled by a NC of M0.5 (LED), used to reset the timers.
- The TON output (M0.4) resets both TP and TON, creating the blinking effect.
- Uses M0.2 as a power source for two timers connected in parallel:
- Network-3
- A counter increments with each blink.
- The counter is preset to 2 to stop blinking after 2 repetitions.
My issue: The program works as expected for the first START press, making the LED blink twice. However, when I press START a second time, the blinking does not occur again. Did I miss something? I want the LED to blink twice and stop every time I press the START button.
Thank you in advance for your help!
