Object ExtTrend

An extension of the Var variable of the PmData object for connecting to the PmTrend object.
Format of saving the data extension as string:

The contents of complete data extension (all configurators) can be saved as a single string. See Format of saving the data extension as string .


This data extension registers itself automatically into the PmTrend object after application launch. Therefore it is forbidden to create the requested item at the page PmTrend > Data! The corresponding variable for trend may be created directly in the PmTrend object as a Var object, or it can be registered as a data extension (ExtTrend).

If all items in the PmTrend object are of the "Data extension" type, then the PmTrend > Data page may remain empty. If there are both types of the items present in the PmTrend object, then in the database table the Var type items will be entered first followed by the "Data extension" items.

Properties and methods:
ClassName Name of data extension type
Color Color of displayed variable
DisplayName Name of displayed variable
Max Maximum value of the variable.
Min Minimum value of the variable.
TrendId Trend identifier and variable (column) name in the trend database table
Unit Physical unit of the variable.
Var Making available the Var object
Configuration windows:
ExtTrend Data extension configuration
PROMOTIC 8.3.30 SCADA system documentation - MICROSYS, spol. s r.o.

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