Enter the simulated start/stop pushbutton program of Figure 9-16 in the PLC. Demonstrate how an open in the stop pushbutton circuit will fail to de-energize the output. Replace the normally open stop...

Enter the simulated start/stop pushbutton program of Figure 9-16 in the PLC. Demonstrate how an open in the stop pushbutton circuit will fail to de-energize the output. Replace the normally open stop pushbutton with a normally closed type, and modify the program so that the circuit operates properly. Demonstrate how an open in the stop pushbutton circuit of this program will automatically de-energize the output.