EtherNet/IP™ is a widely adopted Ethernet communication network that provides users with the tools to deploy standard Ethernet technology (IEEE 802.3 combined with the TCP/IP Suite) in industrial automation applications. The EtherNet/IP and CIP technologies are managed by ODVA, Inc., a global trade and standards development organization.
EtherNet/IP offers various network topology options including star or linear with standard Ethernet infrastructure devices, or device level ring (DLR) with specially enabled EtherNet/IP devices. Compliance with IEEE Ethernet standards provides users with a choice of network interface speeds – e.g., 10, 100 Mbps and 1 Gbps – and a flexible network architecture compatible with commercially available Ethernet installation options including copper, fiber, fiber ring, and wireless.
EtherNet/IP™ implements CIP at the Session layer and above and adapts CIP to the specific EtherNet/IP™ technology at the Transport layer and below. EtherNet/IP uses standard IEEE 802.3 technology at the Physical and Data Link layers. EtherNet/IP can accommodate an unlimited number of point-to-point nodes. At the Network and Transport layers, EtherNet/IP utilizes standard TCP/IP (Transmission Control Protocol/Internet Protocol) to send messages between one or more devices. For real-time data transfer, EtherNet/IP also employs UDP over IP to transport I/O messages that contain time-critical control data.
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