TR-Electronic 65 Serie Montageanleitung Seite 124

Interface information's
3.1.2 Real-Time Communication
Communications in PROFINET contain different levels of performance:
●
The non-time-critical transmission of parameter data, configuration data and
switching information occurs in PROFINET in the standard channel based on TCP
or UDP and IP. This establishes the basis for the connection of the automation
level with other networks.
●
For the transmission of time-critical process data PROFINET differentiates
between three real-time classes, which differentiate themselves regarding their
efficiency:
–
–
–
Figure 2: PROFINET communication mechanism
 TR-Electronic GmbH 2007, All Rights Reserved
Page 80 of 131
Real-Time (RT Class1, RT)
- Use of standard components, e.g. switches
- Comparable Real-Time characteristics such as PROFIBUS
- Typical application field is the Factory Automation
Real-Time (RT Class2, RT)
- Synchronized and non-synchronized data transmission possible
- PROFINET capable switches must support the synchronization
Isochronous-Real-Time (RT Class 3, IRT)
- Clock-synchronized data transmission
- Hardware support by switch-ASIC
- Typical application fields are drive controls in Motion Control Applications
TR-ECE-BA-DGB-0063 v15
Printed in the Federal Republic of Germany
04/25/2022