The invention relates to an operating unit (1) for a production plant (2). The operating unit (1) comprises an authorization receiving module (71) so as to receive authorization identifications (61, 62, 63, 64) which are sent out by operating modules (51, 52, 53, 54) of the operating unit (1), an authorization storage module (72) so as to store in an authorization data storage (8) authorization data including allocations of user identifications (31, 32, 33, 34, 41, 42) to the received authorization identifications (61, 62, 63, 64), and an authorization checking module (73) so as to receive at least one authorization identification (61, 62, 63, 64) from the operating modules (51, 52, 53, 54) and to determine at least one user identification (31, 32, 33, 34, 41, 42), and to unlock an operating module (51, 52, 53, 54) if in the authorization data storage (8) an allocation of the at least one user identification (31, 32, 33, 34, 41, 42) to the at least one authorization identification (61, 62, 63, 64) is stored.