Automation Using PLCs, SCADA and Telemetry Process Control and Data Acquisition
Learn about automation using PLCs, SCADA and telemetry fundamentals, process control fundamentals, data acquisition concepts and more.
A PLC or programmable controller is a computer based solid state device that controls industrial equipment and processes. Initially designed to perform the logic functions executed by relays, drum switches and mechanical timer/counters, it has been extended to analog control as well.
A typical PLC system consists of a processor and an input/output system all mounted in a rack like system. The PLC system is a cost effective solution for applications with a high ratio of digital to analog points in a system. There are numerous third party vendors supplying software packages that allow the PLC to be interfaced to a PC based operator interface package. The typical method of programming PLCs is using ladderlogic.