The RS Components range of industrial computing solutions consists of a high quality selection of PLCs, HIMs and logic modules. We offer the components you need to revolutionise and enhance your process control and automation systems, with solutions tailored for use in a range of industries to provide control of electromechanical processes and building systems. Featuring expert brands like Siemens...
Programmable logic controllers (PLCs) are thought of as the digital brain of automated control systems. It is a solid state device that is able to receive input signals, process, analyse and transmit output data to control a large number of devices to apply logic to tasks to ensure they perform at optimum levels.
A Human Machine Interface (HMI) allows real-time process information to be presented to a human user, to be able to control and modify the process.
Supervisory control and data acquisition (SCADA), is the term used to describe a full industrial control system that uses a computer system to monitor and control a process. This is where PLCs and HMIs work together. A system will usually comprise:
All automated systems can rely on and benefit from process control devices. Some key industries they are used in are:
They're usually available as a fixed configuration or in modular format. The specific model required is highly dependent on the application, the software package, the environment it will be used in and networking capabilities. There are some key points to consider such as the number of input and output points. A simple rule to follow is the larger the systems, the larger the memory, programming, and communication capabilities.