Samples

Accessing the samples in your IFT

The samples for the currently processed message or constants are provided in the script for computation. A variable is automatically created for each sample or constant. The variable contains the value of the sample as a string, whatever the status. To use it as a number, just add the sign + before it.

var EGT_1="655"; //created by WILCO
var EGT_2="658"; //created by WILCO

//can be used like this:

var EGTdiff = Math.abs(+EGT_1-EGT_2);

If the name of the variable cannot be a javascript variable (contains spaces, is only a sequence of numbers, contains special characters), this variable is not created.n any case, the sample can be accessed with the FW object. And this time it is the sample as an object with those fields

You can for example do this:

if (FW["EGT_1"].state=="VALID" && FW["EGT_2"].state=="VALID" ) {
  FW.setStyle('color', 'SpringGreen');
  var EGTdiff = Math.abs(+FW["EGT_1"].value-FW["EGT_2"].value);
}
  FW.setStyle('color', 'RED');
}

A "$" sign before the sample name

You can access the latest saved sample by adding the '$' sing in front of it. For example, if you'd like to get the latest value of the parameter APU_STATUS, just use $APU_STATUS.

The whole sample of APU_STATUS containing values, dates and other fields could be accessed by: FW['$APU_STATUS']. You could do that with all the samples.