11/23/2020 5:33 AM | |
Joined: 10/7/2005 Last visit: 10/19/2024 Posts: 3024 Rating: (1054)
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Hi s4gia short answers to both questions are Yes and Yes presuming your I/O Devices store/remember their assigned Device name. The Device name is all that matters and used on startup to identify each Device. DCP (Discovery and Configuration Protocol) is used for this and https://profinetuniversity.com/naming-addressing/profinet-dcp has more details on DCP. Saying that, if you use a configured Topology and LLDP (Layer Link Discovery Protocol) is supported by all (e.g. usage of managed switches), you can even replace an I/O Device with a brand new out of the box identical one without even having to worry about assigning a Device name (see https://profinetuniversity.com/naming-addressing/profinet-device-names as well as FAQ Entry ID:36752540 for more) |
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11/24/2020 4:16 AM | |
Joined: 10/7/2005 Last visit: 10/19/2024 Posts: 3024 Rating: (1054)
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I might stand corrected on this, but think it is safe to assume that the PROFINET I/O Controller will know and remember the MAC as well as IP addresses of all connected I/O devices (since MAC addresses are used for real time I/O data and IP addresses for non real time data). While I don't know for sure, I doubt that the PROFINET I/O Controller will remember the MAC addresses of all PROFINET devices that ever had been connected. Bear in mind that the one and only important thing to know for the PROFINET I/O Controller are the Device Names which are for good reasons also configured in the HWconfig and stored in the non volatile memory. Everything else follows suit on either PROFINET I/O Controller startup or I/O device connection. No idea, never had to worry about this, but please keep us posted should find out more. Can either way not see a need to being able to reset this info. |
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