Please choose the available variables in the data, and define their field number and multiplicator.
You may also gather several measured data channels in one only PVsyst variable (for example: add several arrays, or calculate energy from available voltage and current). To do this:
-First choose the target PVsyst variable in the list.
-Then choose "Gathering fields" tab, choose this variable and define the number of channels and the operator.
-This will duplicate the corresponding variables in this list, so that you can define a data channel for each one.