IEC 60780 Trend problem

IEC 60780 Trend problem

We use Zenon 7.00 and IEC 60780.
As we lost the communication between Zenon and RTU. Zenon detect that only after 20-25 seconds.
In this case when we draw historical trend, we have have that Zenon draw same lines even when the connection was lost, how we can solve that Zenon draw only when we have a connection or how i can make Driver Zenon detect the offline Faster
Best wishes,

This is a migrated post! Originally posted on 09.10.2013 by user xeren. Please be aware that information can be outdated.