Applies To:
  • CitectSCADA 5.21 Service Pack D, 5.21 Service Pack E, 5.21

Reading Long data types via the Citect OPC Server or using the ctAPI functions CtListData or CtPointToStr with dwMode FMT_NO_FORMAT will round to 7 significant figures.

For Examle

Enter "123456789" in Citect and it will be read as "123456800".


CIT has confirmed this to be a problem in Citect for Windows versions 5.21 Service Pack D to 5.30. This problem has been fixed in version 5.30 Service Pack A.