Determine the necessary PLC switch actuation status (i.e. low versus high process stimulus) to turn the yellow lamp on.
Sketch a Ladder Diagram program for this PLC to energize the lamp if the following input conditions are met.
Suppose we have a PLC connected to three pushbutton switches. Sketch a Ladder Diagram program for program example.
Suppose we have an Allen-Bradley MicroLogix 1000 PLC and two pressure switches we need to connect to it.
Question & Answer – A PLC has been programming to control the starting and stopping of a three-phase electric motor.
A PLC has been programming to control the starting and stopping of a three-phase electric motor.
Identify the problem(s) in this PLC program, and modify it so that it will work as it should.
We have a problem in one of the PLC Permissive Inputs that there is a programming mistake, do the troubleshooting.
PLC program to control a water pump driven by an electric motor. It will be manually started and stopped by pushbutton switches, and shut down automatically by any one of several “permissive” switches.
A engineer needs to write a PLC program to control a water pump driven by an electric motor. This water