Basics of communication with Industrial Ethernet
1.2 Industrial Ethernet
Industrial Ethernet
18 System Manual, 09/2019, C79000-G8976-C242-10
1.2.2 PROFINET
1.2.2.1 Basics of PROFINET
What is PROFINET?
PROFINET is the open Industrial Ethernet standard (IEC 61918, for PROFINET also IEC
61158/61784) for industrial automation.
PROFINET uses the existing IT standards and allows end-to-end communication from the
field level to the management level as well as plant-wide engineering.
Aims of PROFINET
The aims of PROFINET are as follows:
● Open Ethernet standard for automation based on Industrial Ethernet.
Industrial Ethernet and standard Ethernet components can be used together, however
Industrial Ethernet devices are more rugged and therefore better suited to an industrial
environment (temperature, noise immunity etc.).
● Use of TCP/IP and IT standards
● Automation of applications with real-time requirements
● Seamless integration of fieldbus systems
PROFINET communication
PROFINET communication is divided into non real time (NRT), real time (RT) and
isochronous real time (IRT) communication, see section "Transmission procedures and real-
time response (Page 23)".
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