PLCs & Programmable Relays
PLCs, or Programmable Logic Controllers are digital computers that are used to control industrial processes and machines. They are commonly used in manufacturing, automation, and other industrial applications. A PLC consists of a processor, memory, and input/output (I/O) modules. The processor executes a program that is stored in memory and communicates with the I/O modules to control devices such as motors, sensors, and valves. Programmable relays, also known as smart relays, are similar to PLCs but have a smaller memory and processing power. They are typically used in smaller-scale applications such as building automation and home automation. Programmable relays can perform simple logic functions and control devices such as lights, fans, and alarms.