In a crushing machine, there are two presence sensors and two crushing motors as shown in figure 4. The machine is controlled by binary logic so that:  When there is nothing to grind, both motors are stopped.  When the Tank is full, the two motors run simultaneously.  When only sensor S2 detects presence, only one of the motors will work, specifically the one that was stopped. on the last occasion that this same situation occurred.

i) Obtain the truth table of the binary logic that controls the machine according to the previous postulates. ii) Obtain the most simplified Boolean function that represents the truth table of the previous part. iii) Obtain the graphical representation of a ladder diagram for the Boolean expression from the previous part.

S1 S2 MO Figura 4. Mquina trituradora problema 4. S1 S2 MO Figura 4. Mquina trituradora problema 4