Industrial Communication Guide

ETHERNET IN INDUSTRIAL USE

ProfiNET IO Star (switch) and line (field devices with integrated 2-port switch) can be combined to tree topologies.

Uses the MAC address combined with an assigned IP address and a symbolic name. Redundancy mechanisms which can be used in conjunction with a ring structure.

Available in a Real Time (RT) version and a deterministic Isochronous Real Time (IRT) version. RT version uses standard Ethernet with the prioritization options. Communication is between two compo- nents. IRT enables a deterministic procedure allow communication between the PLC and components which is synchronized precisely to the nearest 1µs. This method allows the combination of hard real-time or deterministic communication and standard IP communication. special switches required.

Siemens, PNO

2 und 3

63