clear InteriorFloor1Request InteriorFloor2Request InteriorFloor3Request InteriorFloor4Request;
clear ExteriorFloor1Request ExteriorFloor2Request ExteriorFloor3Request ExteriorFloor4Request;
clear Photocell;
clear T37_InitialValue T38_InitialValue T39_InitialValue T40_InitialValue T41_InitialValue;
plccleartypes;
clear Ts;
plcdemo_ladder_elevator_gui('close');