Hello,

I have a TIA WinCC Prof. V18 Upd3 SCADA system .

In Scada i have some Modbus TCP/IP connections with some Energy Analyzers (Schneider Electric) .

There is a problem . When i lose communication with the Energy Analyzer the value that view in the I/O Filends (Energy , current , vols) , is the last recieved value . But if the Scada closed and re-open the value cahnge to "0". 

Is there any way to keep the value even if the scada close and re-opened ?

Thanks .

Hello Bill97,

In the tag configuration there are possibilities to indicate a substitute value: Defining a substitute value

but none of them contemplate maintaining the last value before losing the connection.