US Patent 10530097 Plug connection and set of plug connections

A plug connection having: a plug connector with, arranged thereon, a first coding element with a coding pattern and an insertion location with, arranged thereon, a second coding element with a coding pattern that matches the coding pattern, wherein the plug connector can be inserted, in an insertion direction (S), into the insertion location as far as a coupling position, when the first coding element and the second coding element adopt a predefined relative position. The first coding element can be rotated on the plug connector about an axis of rotation (A) that runs parallel to the insertion direction (S), and/or the second coding element is held on the insertion location so as to be able to rotate about the axis of rotation (A).