# EtherNet/IP Protocols · `EtherNet/IP` · verification: source checked EtherNet/IP is an industrial network protocol that runs the Common Industrial Protocol (CIP) over standard, unmodified Ethernet and TCP/IP. TCP carries messaging such as configuration and diagnostics, and UDP carries real-time cyclic I/O data. It is managed by ODVA. ## Specification | Property | Value | |---|---| | Transports | tcp, udp | | Architecture | producer consumer | | Encoding | binary | | Standard body | ODVA | ### Default ports | Port | Transport | Secure | Purpose | |---|---|---|---| | 44818 | tcp | false | EtherNet/IP messaging | | 44818 | udp | false | EtherNet/IP messaging | | 2222 | udp | false | EtherNet/IP I/O | | 2221 | tcp | true | EtherNet/IP over TLS | | 2221 | udp | true | EtherNet/IP over DTLS | ## Connected - Related: [CIP Safety](https://machineschema.com/protocol/cip-safety.md), [ODVA CIP](https://machineschema.com/protocol/cip.md), [ODVA CIP Motion](https://machineschema.com/protocol/cip-motion.md), [ODVA CIP Security](https://machineschema.com/protocol/cip-security.md), [ODVA DeviceNet](https://machineschema.com/protocol/devicenet.md) - Supported by: [AutomationDirect C-more CM5-T12W](https://machineschema.com/hardware/automationdirect-cm5-t12w.md), [AutomationDirect EA3-S3ML](https://machineschema.com/hardware/automationdirect-ea3-s3ml.md), [AutomationDirect EA3-T4CL](https://machineschema.com/hardware/automationdirect-ea3-t4cl.md), [AutomationDirect Productivity2000](https://machineschema.com/controller/automationdirect-productivity2000.md), [Brother H550Xd1](https://machineschema.com/hardware/brother-h550xd1.md), [Brother M300Xd2-64T](https://machineschema.com/hardware/brother-m300xd2-64t.md), [Brother R650Xd2 40tools](https://machineschema.com/hardware/brother-r650xd2-40tools.md), [Brother S700Xd1](https://machineschema.com/hardware/brother-s700xd1.md), [Comau MyCo-10-1.00](https://machineschema.com/hardware/comau-myco-10-1-00.md), [Comau MyCo-3-0.59](https://machineschema.com/hardware/comau-myco-3-0-59.md), [Comau MyCo-5-0.80](https://machineschema.com/hardware/comau-myco-5-0-80.md), [Dobot CR 30H-Food](https://machineschema.com/hardware/dobot-cr-30h-food.md), [Dobot CR20A](https://machineschema.com/hardware/dobot-cr20a.md), [Elite Robots CS530H](https://machineschema.com/hardware/elite-robots-cs530h.md), [Elite Robots CS612](https://machineschema.com/hardware/elite-robots-cs612.md), [Elite Robots CS620](https://machineschema.com/hardware/elite-robots-cs620.md), [Elite Robots CS630](https://machineschema.com/hardware/elite-robots-cs630.md), [Epson RC800-A](https://machineschema.com/controller/epson-rc800-a.md), [Epson RS3-351](https://machineschema.com/hardware/epson-rs3-351.md), [FANUC R-30iB Plus](https://machineschema.com/controller/fanuc-r-30ib-plus.md), [FANUC R-50iA](https://machineschema.com/controller/fanuc-r-50ia.md), [JAKA 12 kg collaborative robot](https://machineschema.com/hardware/jaka-collaborative-robot-12kg.md), [JAKA C5](https://machineschema.com/hardware/jaka-c5.md), [JAKA CAB 16](https://machineschema.com/hardware/jaka-cab-16.md), [JAKA CAB 7](https://machineschema.com/hardware/jaka-cab-7.md), [JAKA Intelligent Visual Perception Robot](https://machineschema.com/hardware/jaka-intelligent-visual-perception-robot.md), [JAKA MiniCobo](https://machineschema.com/hardware/jaka-minicobo.md), [JAKA Zu 12](https://machineschema.com/hardware/jaka-zu-12.md), [JAKA Zu 18](https://machineschema.com/hardware/jaka-zu-18.md), [JAKA Zu 3](https://machineschema.com/hardware/jaka-zu-3.md), [JAKA Zu 30](https://machineschema.com/hardware/jaka-zu-30.md), [JAKA Zu 7](https://machineschema.com/hardware/jaka-zu-7.md), [JAKA Zu series](https://machineschema.com/hardware/jaka-zu-series.md), [JAKA Zu35](https://machineschema.com/hardware/jaka-zu35.md), [Universal Robots UR10e](https://machineschema.com/hardware/universal-robots-ur10e.md), [Universal Robots UR12e](https://machineschema.com/hardware/universal-robots-ur12e.md), [Universal Robots UR12e-1300](https://machineschema.com/hardware/universal-robots-ur12e-1300.md), [Universal Robots UR15](https://machineschema.com/hardware/universal-robots-ur15.md), [Universal Robots UR16e](https://machineschema.com/hardware/universal-robots-ur16e.md), [Universal Robots UR18](https://machineschema.com/hardware/universal-robots-ur18.md), [Universal Robots UR20](https://machineschema.com/hardware/universal-robots-ur20.md), [Universal Robots UR20-1750](https://machineschema.com/hardware/universal-robots-ur20-1750.md), [Universal Robots UR30](https://machineschema.com/hardware/universal-robots-ur30.md), [Universal Robots UR30-1300](https://machineschema.com/hardware/universal-robots-ur30-1300.md), [Universal Robots UR3e](https://machineschema.com/hardware/universal-robots-ur3e.md), [Universal Robots UR5e](https://machineschema.com/hardware/universal-robots-ur5e.md), [Universal Robots UR7e](https://machineschema.com/hardware/universal-robots-ur7e.md), [Universal Robots UR7e-920](https://machineschema.com/hardware/universal-robots-ur7e-920.md), [Universal Robots UR8 Long](https://machineschema.com/hardware/universal-robots-ur8-long.md), [Universal Robots e-Series Control Box](https://machineschema.com/controller/universal-robots-e-series-control-box.md) ## Safety - CIP Security adds TLS and DTLS (port 2221). Devices without it accept unauthenticated commands from anyone on the network. ## Study notes - The IP stands for Industrial Protocol, not Internet Protocol. - CIP is the shared application layer, so the same object model also runs on DeviceNet and other CIP networks. - Port 44818 carries messaging and port 2222 carries cyclic I/O. ## Sources 1. [IANA Service Name and Transport Protocol Port Number Registry](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=ethernet-ip) (accessed 2026-10-25) 2. [ODVA: EtherNet/IP](https://www.odva.org/technology-standards/key-technologies/ethernet-ip/) (accessed 2026-10-25) --- Source page: https://machineschema.com/protocol/ethernet-ip JSON: https://machineschema.com/protocol/ethernet-ip.json License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite Machine Schema and the original sources.