Abstract: A network has redundancy features and includes at least two series constructed of a number of network subscribers (100 . . . 107; 110 . . . 117). The at least two series are connected to one another via at least two communication channels, of which only the first one is active and the second one is deactivated. The communication channels are realized by connecting ports of the network subscribers. A network subscriber of the second communication channel monitors the first communication channel for interruption and places the second communication channel into the active state if the first communication channel is interrupted. The network subscribers have several ports, to which further network components can be connected. A microprocessor interface (25) connects the ports (28 . . . 31) with a user-internal processor bus. A switch control (46) provides message route management between the ports (28 . . . 31) and the microprocessor interface (25).

Abstract: A network user station (2), which in a transmitting mode transmits telegrams (5) to another network user station (2) and in a receiving mode receives telegrams (5) from another network user station. Said telegrams contain messages of identical message length in a message string. One of said messages is a time message (5d) provided with a time of day. The network user station is provided with means (11; 13) for substantially preventing inaccuracies with respect to a transmittal and/or processing instant of the time of day.

Abstract: A network user station (2), which in a transmitting mode transmits telegrams (5) to another network user station (2) and in a receiving mode receives telegrams (5) from another network user station. Said telegrams contain messages of identical message length in a message string. One of said messages is a time message (5d) provided with a time of day. The network user station is provided with means (11; 13) for substantially preventing inaccuracies with respect to a transmittal and/or processing instant of the time of day.

Abstract: A network subscriber (2c) is provided with a clock (8) and is connected to a further network subscriber (2a) via a network (1). In a receiving mode, the further network subscriber (2a) supplies a time message (5, Un) containing a time of day to the network subscriber (2c). The network subscriber (2c) includes a synchronization assembly in the form of an adjustment unit (10) that permits improved synchronization accuracy of the time of day. If a deviation between the time of the day included in the time message (5, Un) and a further time of the day indicated by the clock (8) is smaller than a predefined limit value, the synchronization assembly synchronizes the clock (8) with the time of the day that is included in the time message (5, Un) supplied by the further network subscriber (2a).