Object Var (Variable)

See: Var - Deatiled object description
The Var object represents one data variable of the PROMOTIC object. Such variable holds more information in itself (value, name, index, etc.), and so it is represented by the object. Then the object has got this information as its properties.
Properties and methods:
Owner Reference to the Var object owner in the application tree
Bit Value of one bit of the data item
Extension Data extension access
ChangedOnLastWrite Flag showing if value was changed by last writing
Index Index of the data item in the object
Name Name of the data item
Note Note of the data item
Quality Quality of the data item value
TimeChange Time of last writing into the data item that changed value
TimeWrite Time of last writing to the data item
Unit Physical unit of the variable (only for PmData and PmTrend)
Value Value of the data item
ValueBeforeChange Last value before changing value to current
Configuration pages:
Variable Setting the property of one variable
Data binding configuration Definition of the data binding of the variable to another value
Multi items adding Multiple definition of new variables
List of subobjects:
Data extensions The data extensins are PROMOTIC system components, extending the basic functionality of Var data items (variables). Each data extension type is used for specific purpose (e.g. limit excess alarming, OPC server or PmComm object connection, trends, etc.).
PROMOTIC 8.3.19 SCADA system documentation - MICROSYS, spol. s r.o.

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