The invention relates to a production device (1) and to a method of operating said device, comprising a bending press (2) for producing workpieces shaped by bending between bending tools (13) of a stationary bench beam (8) and a press beam (9) that is adjustable in relation thereto. The production device (1) further comprises a tool magazine (4) and a handling device (3) with a gripping device (17) for the bending tools (13) and a stop device (23) which has at least one adjustable stop finger (28), and also a control and monitoring device (24). The stop device (23) is connected to a comparator circuit of the control and monitoring device (24) and has a measuring sensor system and at least one measuring means for determining reference position data of the bending tool (13).