Our PLC Controllers or Programmable Logic Controllers (PLC) are industrial computer control system that continuously monitors the state of input devices and makes decisions based upon a custom program to control the state of output devices. The programmable logic controller performs functions that formerly required relays, solid-state electronics, or mini computers. Almost any production line, machine function, or process can be greatly enhanced using this type of control system. However, the biggest benefit in using a programmable logic controller is the ability to change and replicate the operation or process while collecting and communicating vital information. Another advantage of a PLC system is that it is modular. That is, you can mix and match the types of Input and Output devices to best suit your application.