PLC, PAC and Dedicated Controllers

The Programmable Logic Controller PLC and Programmable Automation Controller PAC are industrial devices, developed for the automation and control of various processes like manufacturing or infrastructure projects. The PLC system can operate with a wide range of communication protocols, including conversions, data analysis, I/O interfacing, signal processing, linking, rendering, and so on. The system is completely programmable by the user and are safe and secure. At Edge Control level, Schneider Electric PLC PAC and dedicated controllers are easy to program, commission, maintain and are IIOT ready.

How does a programmable logic controller (PLC controllers) work? A programmable logic controller (PLC controller) usually comprises of three integral components, i.e., the input/output (I/O) section, processor and power supply. In simple terms, the input/output (I/O) section is where external devices, like sensors, switches and touch screen panels send signals to the PLC processor. The processor is like the brain of the PLC that runs a pre-defined automation script to perform specific tasks. The logic in the automation script looks at the input signal as either digital or analogue data signals and if certain criteria is met the PLC processor sends instructions to the outputs. The outputs could involve turning a light on or off, changing the speed of a motor via a variable speed drive or activating a script to move a robotic arm.

All PLCs today are programmable, and range from basic to complex types to suit your process. PLCs can also be monitored by other computer applications like SCADA or cloud-based apps. Recent advances in PLCs allow for much greater connectivity and integration with a centralised management system. Our next-generation PLCs offer built-in cybersecurity, connectivity to multiple devices or the cloud, and have the processing power needed to handle big data analysis.