EtherNet/IP and PROFINET are industrial Ethernet protocols with different ecosystem and implementation details. Select against installed controllers, supported devices and system requirements.
Comparison chart
| Selection factor | EtherNet/IP | PROFINET |
|---|---|---|
| Organization | ODVA maintains the CIP-based technology | PROFIBUS & PROFINET International maintains the PROFINET technology |
| Controller ecosystem | Check PLC, scanner and device support for the exact product | Check controller, IO device and engineering-tool support |
| Integration | Verify EDS or product configuration resources and network limits | Verify GSDML files, device profiles and network limits |
| Diagnostics | Compare controller, device and network diagnostic features | Compare controller, device and network diagnostic features |
| Interoperability | Confirm every node and feature in the design | Confirm every node and feature in the design |
ODVA describes EtherNet/IP as standard Ethernet and TCP/IP combined with CIP. PI describes PROFINET as an open industrial Ethernet standard. The protocol name alone does not guarantee that a device supports every function your project needs.
Selection checklist
- Inventory the installed PLCs, drives, HMIs, remote I/O and maintenance tools.
- Check the exact protocol support in each device datasheet.
- Confirm required real-time, safety, motion and diagnostic features.
- Compare engineering tools, device files and commissioning resources.
- Document network segmentation, addressing and security requirements.
For controller roles, see PLC vs HMI vs SCADA and how to choose a PLC. Browse HMI and protocol guides.
Related guides
- Robot Repeatability vs Accuracy: What Is the Difference?
- Robot Payload vs Reach: A Selection Chart
- Browse Controllers.
Sources
Common questions
Are EtherNet/IP and PROFINET the same protocol?
No. They are separate industrial communication technologies with their own specifications and device ecosystems.
Can a controller use both protocols?
Some controllers or gateways support multiple protocols, but verify the exact model and configuration.
Which protocol is better?
There is no universal winner. Match the protocol to the installed PLC, devices, integrator experience and network design.