The value of SwK will be 1 for Speed Regulation mode of the Speed Controller and the value will be 2 for Torque Regulation mode of the Speed Controller. You can change the modes by double clicking on the Speed Controller block and choosing any of the option from the dropdown on 'Regulation type'.
The variable SwK is getting the value according to the option chosen from the 'Regulation type' dropdown. You can find the Mask Parameters of the Speed Controller block and see that under 'Parameters & Dialog' Pane, SwK is getting the value from Regulation type.
To locate SwK navigate to the following path:
Right click on Speed Controller block->Mask->Edit Mask->Parameters & Dialog
