I would love to follow the most common pinout (I design connector and receptable, but you never know).

I find conflicting sources:

-RJ45 connector exact same pinout number by number: Folloing RJ45 plug pinout literally 1 is 1, 2 is 2, .... 8 is 8

-A big cable producing brand Turck seems to have another "standard", I did see this at one of our clients: enter image description here

Or, is there no (de facto) standard?

UPDATE: we are using the Turck standard on all our cables now. This seems the de facto standard.


1 Answer 1


Mouser M12 Vs RJ45

On page 2 of this info sheet from Phoenix Contact, it says "There is still no agreed standard on wiring an eight-pin variant for Industrial Ethernet."

Hope that helps

  • 1
    \$\begingroup\$ thanks. FYI I got an answer back from Turck. They labeled their own pinout as "CORRECT" and the pin-by-pin with RJ45 connectors as "INCORRECT" (but I guess, that's their view :) ) \$\endgroup\$
    – lode
    May 15, 2017 at 21:42
  • \$\begingroup\$ Here's also an HTML version of the linked article: iebmedia.com/… \$\endgroup\$ Jun 4, 2020 at 14:21

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