Can PROFINET used instead of TCP/IP?

Webinar_Question
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Joined: 29 Feb 2024, 07:58

Can PROFINET used instead of TCP/IP?

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Can PROFINET used instead of TCP/IP?
Alex.W
PROFINET Expert
Posts: 71
Joined: 15 Jan 2024, 09:37

Re: Can PROFINET used instead of TCP/IP?

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Webinar_Question wrote: 22 Mar 2024, 12:44 Can PROFINET used instead of TCP/IP?
PROFINET is a protocol suite based on standard Ethernet. Frames have been defined that look different depending on the service. Ultimately, all of this is already included in the devkit.
  • 1. the naming of the devices (initial assignment of addresses) and the discovery of the devices by the controller during start-up is DCP (Discovery and Configuration Protocol). This is based on layer 2
  • 2. the neighbourhood service is defined in IEEE 802.1AB, called LLDP and is also a layer 2 frame.
  • 3. acyclic services: IP+UDP
  • 4. cyclic frames: Layer 2
Since PROFINET does not exclude other frames, but is really based on standard Ethernet, TCP/IP can also be spoken in parallel on the same line. PROFINET ensures the QoS by tagging the frames using the VLAN tag (VLAN Prio PCP 6).
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