I know there are some work arounds that can be done but it would be nice to have a demand scan option that would force an update when toggled(for those of us that may only read data once or twice an hour). another nice feature would be some tags that look at comm %. like a total polls tried, total polls successful, total bad polls, and % thru put for each device, perhaps on an hourly or daily basis.
Just a thought. These features are built in to some of the other opc servers that I use and are very useful.