Pushbutton S_1 is used to manually latch (M_R ON) and unlatch (M_R OFF) the conveyor. - The fiber optic sensor FP_S detects the TOTAL parts that go through the line. - The inductive sensor IP_S detects the METAL parts that go through the line. - The limit switch L_S momentarily stops the conveyor (M_R OFF). - The red pilot light L_1 must be ON when the METAL part count is greater or equal than the NONMETAL part count and the TOTAL count is greater than 0. - The green pilot light L_2 must be ON when the METAL part count is less than the NONMETAL part count and the TOTAL count is greater than 0. - The blue pilot light L_3 must flash ON and OFF when the TOTAL count is larger than 0 in intervals given by the following relationship in milliseconds: FLASHING = 1050 - (1000*METAL)/TOTAL