A microprocessor-based industrial control system. It communicates with other process control components through data links. It is used in process control for simple switching tasks, PID control, complex data manipulation, arithmetic operations, timing and process and machine control.
Special-purpose computer which controls most of a roller coaster's functions.
A device using programmed, custom instructions to provide automated monitoring and control functions by evaluating a set of inputs. Used to automate complex functions in machining, packaging, materials handling or other applications.
a control device, normally used in industrial control applications, that employs the hardware architecture of a computer and a programming language
a device that is pre-programmed to accept relay ladder logic instructions and perform these instructions to control the equipment operation.
A microprocessor-based controller that has multiple inputs and outputs, and that contains an alterable program. A PLC has a user programmable memory for storage of instructions to implement specific functions such as input/output control, timing, counting and control.
Computer-based industrial monitoring and control package with applications mostly in the areas of safety, sequential or logical operations, where control actions are based on equipment and alarm status.
an electronic chip with a memory which can store and give instructions to monitor and control machines automatically.
A system that controls large numbers of discrete elements using very fast I/O scan times. Today, even the smallest PLCs may be equipped with serial communication and analog control capabilities, and perform arithmetic functions.
Programmable Logic Controller (PLC) is an industrial device that provides an interface for input sensors and output actuators. PLCs can be programmed using relay ladder logic to control the outputs based on input conditions and / or algorithms contained in the memory of the PLC.
A microcomputer-based control device. A solid-state control system which receives inputs from user-supplied control devices such as switches and sensors, implements them in a precise pattern determined by instructions stored in the PLC memory, and provides outputs for control or user-supplied devices such as relays and motor starters.
A Programmable Logic Controller, PLC, or Programmable Controller is an electronic device used for automation of industrial processes, such as control of machinery on factory assembly lines. Unlike general-purpose computers, the PLC is designed for extended temperature ranges, dirty or dusty conditions, immunity to electrical noise, and resistance to vibration and impact. Programs to control machine operation are typically stored in battery-backed or read-only memory.