By studying the principles of John W. Webb, you are building your knowledge on a foundation that has powered the industrial world for decades.
Even with the rise of "Industry 4.0" and the Internet of Things (IoT), the principles John W. Webb established remain the bedrock of automation. Modern PLCs now have web servers and cloud connectivity, but they still rely on the scan cycle and reliable I/O processing described in his chapters. Seeking the PDF or Updated Versions? By studying the principles of John W
The PLC executes the user-created logic based on those inputs. By studying the principles of John W
The interface between the PLC and the "real world." By studying the principles of John W
The PLC updates the status of output devices (motors, valves).