Applies To:
  • CitectSCADA 7.x
  • VijeoCitect v7.x
  • PowerLogic SCADA v7.x 
Summary:
 TrnGetTable returns an error 302 and eventually TableMath() returns wrong values when there are gaps in the Trend.
This will also happen even if you use it with Mode to ignore the Gated or Invalid data.

Solution:

When TableMath() is used with mode 0 (Operate on all data):
- At least ONE entry in the table must be valid to return a valid minimum or
maximum.
- EVERY entry in the table must be valid to return a valid total, average or
standard deviation.

When TableMath() is used with mode 1 (Ignore invalid or gated data):
- At least ONE entry in the table must be valid to return a valid minimum,
maximum, total, average or standard deviation.
Keywords:
 TableMath, TrnGetTable

Attachments