And address in the range to which you referred could be a value being "poked" by an HMI, but it could easily just be a "holding" register, i.e., a memory location that the PLC uses for temporary storage of values while it processes the rest of the logic.
Be aware that some instructions may...
It sounds like what you really want/need is determine the protocol to query the remote transceiver. If you're planning on using a PLC to do it, expect to have some difficulty unless the remote transceivers talk a protocol like modbus, which a number of PLCs support to varying degrees, and...
I'm with several others in this thread. If you can, press to use Concept vs. ProWORX. At best ProWORX would be considered buggy. It will blow up on you at the worst time--when you need it. Concept is much more stable, and if you use the IEC programming--easier. I've had to learn "984LL", AB...