NET_SEL variable

NET_SEL variable

Hi,
I want to be able to block the accessing the same variable from two operator stations in the network. I tried using the NET_SEL status of the variable and also with interlock(giving the net_sel status of the variable as the condition for the interlock). But the interlock is not working since the net_sel status bit is not high even when it is accessed in an operating station. Can you please suggest a way to proceed?
TIA

This is a migrated post! Originally posted on 12.04.2012 by user ansab.tp. Please be aware that information can be outdated.