About Programmable Controllers
Programmable Controllers
A programmable controller is an industrial digital computer that is specifically designed to continuously monitor the state of input devices, and make decisions on how to control operational devices such as motors, valves, actuators, and relays. These decisions are based on pre-programmed instructions that have been entered into the controller's memory. Programmable controllers are used in many industrial automation applications, where reliable and repeatable operation is essential. Programmable controllers can provide a cost-effective alternative to hardwired relay control systems for controlling machinery and process operations.