The SI-EL3 is a CPU Unit manufactured by Omron, which is used for controlling machines and processes. It is equipped with PowerLink communication card, which is mainly used for network communications based on PowerLink protocol for machine-level applications, such as vision systems and robotic arms. This communication card has two RJ-45 ports, a USB port and a CAN port. It supports data transfers of up to 10 Mbps, and can be connected to a variety of different sensors and actuators. The SI-EL3 is suitable for harsh industrial environments and provides robust, reliable, and secure communication for best machine performance.