Greetings 3ICHRA ...
and welcome to the forum ...
first of all, there are MANY different models of SLC-500 processors ... and there are MANY different models of PanelView 550 devices ...
all of these have different communications ports, etc.
please post the EXACT catalog number of the hardware you have ...
example: 1747-L542/B for the processor ...
example: 2711-B5A1 for the PanelView ...
once we get that information, we can try to help you get things connected ...
going further, do you have the necessary RSLogix500 and PanelBuilder software available to program both of your devices? ... and is anything else already connected to your system? ...