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Unit - property of the ExtSubVar object

Description:
Physical unit of the variable This property is accessible only for the variables of the object: PmaData and PmaTrendGroup.
Syntax:
String Unit
Calling:
d = oData.Item(id).Extension("sv").Unit
Note:
Property access for read only. The value of this property is defined in the "Unit" configurator of this object. Although the property is read-only it is possible to enter initial value into it by script (if it si empty). After that it is not possible to modify the value (until the application is restarted).
Example1:
Examples of obtaining this property in the script.
JavaScriptVBScriptSelect and copy to clipboard

value = pMe.Pm("/data/#vars/Temperature/#ext/sv").Unit;

//or
value = pMe.Pm("/data/#vars/Temperature").Extension("sv").Unit;

//or
value = pMe.Pm("/data").Item("Temperature").Extension("sv").Unit;
Example2:
The example of obtaining this property by Macro expression from another data extension via pDE variable.

History:
Pm9.00.10: The property can now be writen only once
Pm8.03.11: Created
PROMOTIC 9.0.10 SCADA system documentation - MICROSYS, spol. s r.o.

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