1. A welding device for a production system, comprising: at least one welding tool; and a control device operatively connected to the welding tool, wherein the control device is configured to: control the welding tool to connect at least two components with a welded connection with reference to a first parameter, wherein the first parameter defines the welded connection; and access the first parameter with reference to a hierarchy in which a second parameter is subordinate to the first parameter and a third parameter is subordinate to the second parameter, wherein the second parameter defines a welding task which is assigned unambiguously to a position on a product to be produced with the production system and the third parameter defines a combination of the at least two components, wherein the second parameter includes information describing welded connections with a same combination of at least one of sheet metal thicknesses and materials, and wherein the information is based at least in part on conditions at a position of the welding task.