Think I figured where I went wrong and probably started with using houselinc. Going to try Insteon terminal. I have a 2413U usb powerlinc and guessing to get it connected in Insteon terminal I will need to change /dev/insteon to /dev/ttyusb0 and make sure that the device has the correct write permissions.
26 def connectToMySerial():
27 “”“connects to my modem on pre-defined serial port”"“