So, to be honest I'm brand new to the PLC world. I'm basically a software support guy for Windows who got wrangled into doing some extra stuff for the company. Long story short, I'm confused about modbus, how it works, and how to utilize data. I have a USB to RS 485, and I need to just be able to see the data coming in on a Windows PC in an easy to understand layout. I would really appreciate any help at all. I'm so in over my head and stressed out. I believe it's set up for two wire (with one shield cable), and it has terminal screws. I downloaded modscan, but it doesn't mean anything to me. I understand (vaguely) that it is hex that I'm seeing, but I need to know real numbers that make sense. For instance, I know RPM is (for example) register 32. I need to be able to see a list of selected registers and go "oh okay, so register 32 says 1800, so I know the engine's RPM is at 1800." If that makes sense. I'm sorry, I'm trying my best, and my job may be on the line. It's a lot to take in, and we basically got shoved into this mess last second when our telemetry supplier went belly up.