Once a position is set either with a Teach/Learn or via the adjusting switches the system is ready for operation. Simply apply a 24vdc signal to the "Start" terminal to initiate the scanning cycle (this can be done via the CNC, PLC or with a relay). The wand will rotate to the selected position and verify that the tool or object is present. If everything is alright the unit will output an "OK" signal to allow the machine cycle to continue. If the tool is broken the wand will travel past the stored position and the controller will output a "KO" signal to let the machine know there is a problem and shut down automatically. The wand must also travel to a minimum position. This is important because if the wand is blocked with chips or an obstacle the unit will output a fault alerting the operator that there is a problem.