Applies To:
  • CitectSCADA 7.10


HF710R137867 for Citect SCADA Version 7.10.

Bug 37867 - Trend file creation performance improvement

This Hotfix introduces a new Citect.ini parameter [Trend]FileCreationWriteSize.
This parameter has the effect of controlling the number of bytes written when initialising a trend file.
Its default value is 16384, with valid values being in the range 1 to 2147483647. 

Files Affected:
  • CiTrendArchiveFileOffset.dll
  • CiTrendArchiveFileOffset8Byte.dll
  • TrendServer.dll
After installing CiTrendArchiveFileOffset.dll and CiTrendArchiveFileOffset8Byte.dll in Common Files, please run the following commands from a command prompt in the Common Files location:

regsvr32 CiTrendArchiveFileOffset.dll
regsvr32 CiTrendArchiveFileOffset8Byte.dll