Applies To:
  • CitectSCADA 3.00

Event trends (made by selecting trend type as TRN_EVENT) should not be displayed using a normal (single or double) trend page. If you do it will seem to operate correctly, but the span time will be incorrect. 

Event trends should be displayed using pages created from the Event trend page template or a derivative of it.

This problem has been fixed in CitectSCADA v6.0
A "cannot have mixed trends" hardware alarm is no longer displayed after adding
the 'Event' trend onto the page which has a Periodic trend pen added into the
same page.