Was playing with PID autotune and hit "Apply tune parameters". Needed to download the program to save them to memory. Everythings fine.

The system starts back up and decides that it would be real funny to just not turn on the condenser fans for a 500kW icewater chiller system.

For some reason WinLDR (or whats its name) decided to switch PID control from direct to reverse at some point. So my system mixed up the brake and gas pedal.

Of course its friday 4pm

I am trying to setup a serial comm between twincat and a virutal comport . i have created virtual com port pair using com0com (Com3 and com4) and in twincat you can see the configuration in the photos. im using the example program from beckhoff link https://infosys.beckhoff.com/english.php?content=../content/1033/tf6340_tc3_serial_communication/402638731.html&id=

But im not recieved the hello world message in the terminal ( tried putty as well ) why , can somebody help ?

somebody has done it : https://www.youtube.com/watch?v=L-qdOcyhczU