Industrial Engineer · phase 5 of 16
PROFINET
Industrial Ethernet system maintained by PROFIBUS and PROFINET International for automation communication and real-time I/O.
The Explain card
- Plain English
- PROFINET is the industrial Ethernet standard from the PROFIBUS world, and the default network in Siemens plants. It carries cyclic I/O, drive control and diagnostics on standard Ethernet hardware.
- Example
- An S7 controller talks to remote I/O stations and to a SINAMICS drive over one PROFINET network. The drive receives its control word and speed setpoint every few milliseconds and answers with status and actual speed.
- Why it matters
- Devices are addressed by name rather than only by IP, and a swapped device inherits the name from its topology, which makes replacements easy and misconfiguration subtle. Its real time classes decide whether a network is good enough for motion.
- Hook
- Siemens country runs on this.
Where it sits in the deck
Phase 5: PLC Industrial Communications
The protocols that let controllers, drives and operator panels talk, plus the addressing and description files that make them agree on what was said.
