Blocks in the Simscape™ Driveline™ libraries transmit physical signals. You cannot plot or perform mathematical operations on physical signals using regular Simulink® blocks without passing the physical signal through a Sensor block and a PS-Simulink Converter block. Sensor blocks measure the variables in a physical signal and output a proportional control signal. Converter blocks convert the control signal to a signal that can be input to regular Simulink® blocks.