The XS3F-LM8PVC4S2M is a part of Omron's machine automation PLC series. It is a compact style controller that is used for controlling automated processes. It has three ports for programming, monitoring, and communication, and supports a variety of different communication methods, including Ethernet and serial. The XS3F-LM8PVC4S2M can control up to eight separate points and has a large built-in memory capacity.