Fieldbus & networking
PROFINET
Siemens-developed industrial Ethernet standard used to connect robots, drives, and I/O to S7 PLCs with real-time and isochronous options.
PROFINET runs over standard Ethernet hardware and offers three performance classes, from standard TCP/IP communication up to isochronous real-time for motion-critical applications. Robot controllers typically support the RT class, fast enough for I/O exchange and status handshaking with a line PLC.
Configuration happens through GSD device files that describe the robot's module structure to the PLC engineering tool, most commonly Siemens TIA Portal. The PLC engineer maps the robot's digital and analog signals as a device on the PROFINET network rather than wiring discrete cables.
PROFINET networks are typically laid out in a ring or line topology with managed switches. This simplifies cabling in large cells but requires attention to network diagnostics when a device drops out.
Related integrations
Common questions
- What does PROFINET do?
- Siemens-developed industrial Ethernet standard used to connect robots, drives, and I/O to S7 PLCs with real-time and isochronous options.
- What does PROFINET work with?
- It works with Siemens S7 1500, Siemens TIA Portal, KUKA KR C4, ABB IRC5, Beckhoff TwinCAT.
- What should I watch for with PROFINET?
- GSD files must match the exact robot firmware version. Isochronous real-time needs a fully PROFINET-certified switch topology. Diagnostics reporting varies by robot brand implementation.