Network and associated network subscriber having message route management between a microprocessor interface and ports of the network subscriber

摘要

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).