OnlyActivePolls for OPC

[gyu]

Version 3.14Patch 19
Windows AMD64
Window Server 2012 R2
Redundancy server

We are using WinccOA as above spec.and PLC is melsec-QCommunication with PLC via OPC.I know that there is "OnlyActivePolls" for S7 Driver module.So, Is there any patch of "OnlyActivePolls" for OPC ??Because the Data value Of Trend on the Screen Of WinccOA is shacked or changed.the curve is same as before but the data value is changed.
but, it is ok when stopping the secondary server. (primary server is running only)
I heard that 2, 3years ago,case of Modbus ,It was same situation.You made the patch for it then.So, I request the patch to clear this problem.Thanks

[gschijndel]

OPC DA is event driven, so neither server is (actively) polling the server.
If the load is too much for the OPC server using the config entry 'nonpermanentKey' might help.