"A dipswitch at the cable connection of the light curtain receiver enables a choice of whether a blanking function is to be used. Once this choice has been made, programming of the unit in the light field is made easy by using the Blanking Programmer BP1.","If the extent of the object in the protected field then changes, the light curtain can be reprogrammed—only 11 seconds after the push button on the front of the BP1 has been pressed.","The BP1 is easily connected, in series with the cable to the light curtain receiver unit, using the M12 connector and the free length of the unit’s cable."