As per my understanding, you would like to set the communication port number in your serial blocks dynamically. For this, I recommend you use the “set_param” function. To set communication port in the “Serial Configuration” block, please use the following command(use your port number instead of COM5)
set_param(gcb, "Port", "COM5");
I suggest you refer to the following documentation to know more about “set_param()” function:
The parameter name to be used in the “set_param()” function is “Port”. I suggest you refer to the following documentation for more reference:
I hope this helps you in setting the port number as an external parameter.
