I'm looking at either using a Allen Bradley SmartGuard or a Siemens MSS. I've been playing about with programming logic for both of them and I'm seeing advantages and drawbacks to both of them (not being able to give meaningful names to IO for the Siemens is a big one!....unless I just haven't figured that one out yet).
What have users here used and what do they prefer?
What have users here used and what do they prefer?