Object ExtTrend

An extension of the PmVar variable of the PmaData object for connecting to the PmaTrendGroup 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.


- Id: see "Data extension identifier" configurator
- PmaObject: see "Target object (PmaTrendGroup)" configurator
- Order: see "Order" configurator
- Name: see "Trend identifier" configurator
- Min: see "Minimum" configurator
- Max: see "Maximum" configurator
- Unit: see "Unit" configurator
- Color: see "Color" configurator
- DisplayName: see "name for displaying" configurator
- Sensitivity: see "Dead band" configurator
- Params: see "Additional parameters" configurator
- ValueType: see "Value type" configurator
- Bit: see "Specifies the bit number to test" configurator
This data extension registers itself automatically into the PmaTrendGroup object after starting the application. Therefore it is forbidden to create the requested item on the "PmaTrendGroup > Data" page! The corresponding variable for trend may be created directly in the PmaTrendGroup object as a PmVar object, or it can be registered as a data extension (ExtTrend).

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

Properties and methods:
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 PmVar object
Configuration windows:
ExtTrend Data extension configuration

Pm8.03.02: Generalization for possibility to trend just a selected bit in a value (see "Value type" configurator).
Pm8.03.00: Created
PROMOTIC 9.0.9 SCADA system documentation - MICROSYS, spol. s r.o.

Send page remarkContact responsible person
© MICROSYS, spol. s r. o.Tavičská 845/21 703 00 Ostrava-Vítkovice