PLCjärjestelmä

PLCjärjestelmä refers to a Programmable Logic Controller system. A PLC is a ruggedized digital computer used for automation of typically industrial electromechanical processes. It is designed to withstand harsh industrial environments and offers features like logic processing, timing, counting, and communication capabilities. A PLCjärjestelmä comprises the PLC itself, input/output modules, a power supply, and programming software.

Input modules receive signals from sensors and devices, such as pushbuttons, limit switches, temperature probes, and pressure transmitters. These signals are converted into a digital format that the PLC can process. The PLC then executes a user-written program, often called ladder logic, which dictates how to respond to these inputs. Based on the program's logic, the PLC sends output signals to actuators, like motors, solenoids, relays, and indicator lights, to control the process.

Programming software is used to create, edit, and download the control logic into the PLC. Common programming languages include ladder logic, function block diagram, structured text, instruction list, and sequential function chart. PLCjärjestelmäs are fundamental to modern industrial automation, enabling efficient and reliable control of manufacturing processes, building systems, and other automated operations. They offer flexibility and scalability, allowing for easy modification and expansion of control systems.