Talking to Logic Motion Controller (LMC 300) via USB
The "motus module" that the engineer was talking about, is probably a "modbus module". Modbus is a protocol normally used on top the RS485 serial bus.

The LMC 300 controller communicates with the control panel using RS485. I think you will have more luck using this interface instead of the USB interface as both Modbus and RS485 are industry standards and well documented. The data on the USB interface might be very hard do decode.

Regarding the LMC 300, I have a theory that it also goes by the name LMC 320 - or maybe that's a 2nd generation of the same product - in any case, I think the information you can read online about how to communicate with the LMC 320 also applies to the LMC 300.

LMC 320 User Manual (page 48+49 details how to connect a RS485 device):
https://www.manualslib.com/download/952626/Lodam-Lmc-320.html

I found this video a good resource to understand how RS485 works: https://www.youtube.com/watch?v=9NJVs3_g_PY&amp;t=633s

You can read more about the Modbus data protocol here: http://www.simplymodbus.ca/FAQ.htm