Description
This example shows how to convert values of Datapoints between different units e.g.(from Watt to KW). The conversion can be handled with LUA function. The output value can be written to any selected item(Virtual items or VAR\Real items). The function reads the incoming values and converts them into any related measurement.
Creating a new LUA function
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Afterwards, you can select the "nxaDefinitions.lua" to open the main LUA file. Paste in the following code at the end of the file:
Code Block | ||||
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function converter()
local var=nxa.GetValue(nxa.SourceItemID())
local cal= var/1000 --conversion factor e.g. (1000 W will convertet to 1 Kw)
nxa.SetDestinationValue(cal)
end |
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