I want to use a LED marquee sign with an Opto-22 Snap-Pac-R1 controller that I have and I want to communicate using Ethernet if possible. The marquee sign is made by EZAutomation:
I know I have to use a tcp communication handle but the documentation for the marquee sign does not specify what port number to use, it seems they do not need a port number?
Do I have to specify a port number when I use a communication handle or can I just specify the IP address? Has anyone run into this before and know of the “secret” port number that needs to be used? Any help would be greatly appreciated. Thanks!