soop7667 said:
I need help understanding the Remote Bride and Station and Link ID Addresses...
These are used when you're
bridging from a DH+ network across a DH network to a third DH+ network. Since you have three SLC's on one DH+, you're only going local. Use the default or ignore.
soop7667 said:
I've heard about the MSG Instruction and I've looked at it but I'm not sure how to set it all up. The PLC I'll be using has 32K of memory - and Not a single line of logic in it.
You'll need to add some logic if for nothing more than providing a place for the message instruction to hang out. Since polling takes place at some timed interval you'll also need one or more timers to trigger the message instructions. As Tom Jenkins notes, you'll be reading from the other processors; therefore it can be done with no logic changes in them.
If the intervals are far apart (a relative term) you may be able to use separate MSG instructions for each set of data. If however, there could be a lot of data collected while the other system is offline, I'd think you'd need to set up some sort of indirect/indexed scheme to place the data in files.
Then too, you'll want some way for the Excel system to collect the stored data and trigger the collecting PLC to dump what it's got and start over.
BTW:
a. How is the PLC going to know when to start collecting?
b. How much data (number of words) do you expect to be collected in the PLC?
c. Is the information in the target PLC's in one general area, or is it scattered all over?
It's slow right now. Folks will be along by and by to help flesh this thing out.