When deciding on a temperature control scheme for a process, options include a PLC or stand-alone temperature controllers. Learn about the pros and cons of each technology in process applications.
Years ago, as PLCs became smarter and more powerful, there was a push to get PLCs to perform basic PID control. Shortly after, some manufacturers developed units that functioned as a PLC but also had the ability to perform eight PID control loops. In the early 1980s, this was pretty exciting stuff.