Opta Finder freezes when trying to connect in PLC

Official Hardware Opta
1

Hi, as many users I've been experiencing the well-known bug with the Opta Finder and Arduino PLC : when trying to connect to the board, the softwate freezes, and even when PLC is killed, the WinCommLibs process is still alive.
So far, I've tested the board with the Arduino IDE, it works well, I can upload code just as I did with my Arduino Mega and Nano.
With PLC, I'm able to download a sketch for first setup and reinitialization : I can do so in both of the following ways, by selecting the right COM port, or by selecting Automatic (Bootloader).
So, I'm able to get the famous virtual serial port...the one created by runtime.

Since then, I'm stuck : if I select the virtual port, then I try to connect, my computer freezes. I've tested it on another computer (both run Win11), same thing.
If I chose the previous port (the physical one), then the message "ERROR" is displayed at the bottom right, with yellow letters and a red background.

Anyone could help ?

Thanks !

2

Make sure your connection settings match your port settings. Mine are 9600bps N,8,1 address 247. I found that these can get changed unexpectedly and f-things up. If nothing else, you can just start over from scratch. Use the Arduino IDE 2.0 to perform the memory format (https://docs.arduino.cc/tutorials/opta/memory-partitioning/) , when done flashing watch serial port to see when memory partitioning is done then immediately put the opta into bootloader mode (hit the reset button twice), then in PLC IDE, re-initialize OPTA and reactivate license.

3

I started over the whole procedure, downgrading PLC, and it worked. However, in an industrial context, this bug is something people can't afford to deal with. In my opinion it should seriously be tackled by the programmers :wink: