Alex,
I loaded in your flow, changed the CI-V address to match my IC-7610 and ran it. I don't know why you are getting permission denied errors. That often implies that another program is attempting to access the serial port or has control of the serial port already. However, your Serial Node is not configured properly. It should look like the attached screenshot. You can ignore the Serial Port and Settings sections, those will be different than yours. What is important is the Input section. That should match what I have. Once I made that change, your flow started working for me.
I am using an FTDI USB to CI-V serial cable rather than the built-in Silicon Labs interface. That interface connects to my logging program directly. However, the Silabs interface will work the same once you fix the Input section.
73,
Scott
AK5SD
Scott Dupuie
