Programmable logic controllers (PLCs) are used to control industrial machinery such as AC servos, general-purpose inverters and sensors. They are widely used in factory automation systems for manufacturing and processing lines, machine tools and industrial robots. To provide control capabilities tailored to each individual system, modular PLCs (CPU unit and various peripheral units) are used for large-scale and midsize systems, while block PLCs (CPU unit only) are used for small-scale systems. Renesas offers a wide-range of products that can be used in PLC solutions, including microcontrollers and microprocessors, memory ICs, and analog and power devices.