Profinet (EN)

Profinet

Profinet is an industrial communication protocol developed by Siemens based on Ethernet. It offers various transmission types, from standard Ethernet communication to a complex automation architecture with IO controllers and IO devices. Profinet IRT (Isochronous Real Time) enables cyclic, isochronous data transmission with very low jitter for highly dynamic applications in industrial automation.

Architecture

flowchart TD   IOController[IO-Controller] <--> ProfinetSwitch[Profinet-Switch]   IOController <--> EngineeringTool[Engineering-Tool]   IODevice1[IO-Device 1] <--> ProfinetSwitch   IODevice2[IO-Device 2] <--> ProfinetSwitch   IODevice3[IO-Device 3] <--> ProfinetSwitch   ProfinetSwitch <--> Management[Netzwerkmanagement]   ProfinetSwitch <--> StandardEthernet[Standard-Ethernet-Geräte]      subgraph ProfinetIRT     direction LR     IOController -->|IRT-Daten| IODevice1     IOController -->|IRT-Daten| IODevice2     IOController -->|IRT-Daten| IODevice3   end 

Im Kontext

• Typically used together with Industrial Ethernet, OPC UA and TSN (Time-Sensitive Networking)
• Related to: Modbus TCP, EtherNet/IP, EtherCAT
• Example use: Manufacturing automation, process industry, robotics control