Hello I’m a student and I’m currently working for a small association and they asked me to create a modbus sniffer for the function code 0x03, 0x06 and 0x10. I’ve never used c# before in my life and they gave me a little code already written. I tried to read and understand it all and it seems correct for me. But when I start the debugging it doesn’t go very well. I will put here part of the code and another part in the first comment.