(Solved): An emergency stop system is to be designed for a certain automatic production machine. A single "st ...

An emergency stop system is to be designed for a certain automatic production machine. A single "start" button is used to turn on the power to the machine at the beginning of the day. In addition, there are two "stop" buttons located at two locations on the machine, either of which can be pressed to immediately turn off power to the machine. Let $X1=$ start button (normally open), $\mathrm{X}2$ = stop button 1 (normally closed), X3 = stop button 2 (normally closed), and $Y=$ power-to-machine. (a) Construct the truth table for this system. (b) Write the Boolean logic expression for the system. (c) Construct the ladder logic diagram for the system.