Calling LoadDataValue method from ST program

DISCLAIMER

The example below is intended to demonstrate one or more features or methods and is presented as a configuration example only. Schneider Electric assumes no liability for the use or application of this example or any portion thereof.

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Below an example of Structured Text program that triggers the "LoadDataValue" method from a point:

PROGRAM LoadDataValueExample
(* First declare the method associated to the point you will load data to *)
METHOD
loadValue AT %M(.A2.Historic.LoadDataValue) : BYTE, DINT, DATE_AND_TIME, LREAL;
END_METHOD
(* variable declaration, in this example, local *)
VAR
Reason : BYTE;
Quality : DINT;
TimeStamp : DATE_AND_TIME;
Value : LREAL;
END_VAR
(* setting the values (in a real program, the values will come from other sources, like SQL or user inputs *)
Reason := 0;
Quality := 192;
TimeStamp := NOW(); (*remember that time must be in UTC *)
Value := 5.9;
(* trigger the method *)
loadValue(Reason, Quality, TimeStamp, Value);
;
END_PROGRAM

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