PROFINET is a real-time industrial communication protocol that runs over standard Ethernet hardware. It provides cyclic data exchange between a PLC (IO-Controller) and field devices (IO-Devices) with deterministic latency.
Device Name logic
In PROFINET, devices are identified first by a unique device name, not by IP. The controller finds the device by name via DCP and assigns the IP. If the name is wrong or duplicated, the device cannot connect.
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io-station-2
sick-scanner-aNaming ruleDevice names cannot contain uppercase, underscores (_) or dots (.). Only lowercase letters, digits and hyphens (-) are valid.
- Layer
- Standard Ethernet (Layer 2)
- Addressing
- Device Name → DCP → IP
- Typical cycle
- 1–4 ms (RT)
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