Abstract: A web-fed rotary printing press, which is used for printing a web has at least four printing points or locations that are allocated to the web in an imprinting mode of the press. At least one of each two printing points or locations can be alternatively engaged with the web. These two printing points apply the same ink to the same side of the web. These two printing points or locations are situated in two different printing units. In each of the operating modes of the press, at least one of the printing points or locations in each of the units is in a print-on position.

Abstract: The position-controlled stopping of rotating components of shaftless drive mechanisms, in the case of a loss of voltage, is accomplished by the provision of an external connectable network. That external connectable network supplies the process power which is missing due to a loss of rotational power in the event of a voltage loss.

Abstract: A communication system consisting of network nodes for operating industrial machines and a method for controlling a communication system. The invention relates to a communication system consisting of network nodes (1, 2, 3, 4, 5) belonging to a control and/or drive network (11, 12) wherein control and/or regulating signals are exchanged between network nodes via a closed ring-shaped signal line (6,7) in order to operate industrial machines. A network node (2) exchanges signals with at least one other network node (1, 3) via a bi-directional signal path. At least one network node (2) comprises a switching unit (8) which can be connected to two other network nodes via two bi-directional signal paths (10). The communication system can by configured to form various networks (11,12) by means of a corresponding switching position of the switching units of the network nodes, said networks (11, 12) being provided with separate signal lines (6,7).

Abstract: A web-fed rotary printing press, which is used for printing a web has at least four printing points or locations that are allocated to the web in an imprinting mode of the press. At least one of each two printing points or locations can be alternatively engaged with the web. These two printing points apply the same ink to the same side of the web. These two printing points or locations are situated in two different printing units. In each of the operating modes of the press, at least one of the printing points or locations in each of the units is in a print-on position.

Abstract: The invention relates to a method for position-controlled stopping of rotating components of shaftless drive mechanisms in the case of voltage loss, whereby the lacking process power arising from a lack of rotational power is supplied by means of an external connectable network.