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AssigneeAS-International Association E.V.
InventorMatthias Breuninger
Estimating the term…
The invention relates to a bus system having a master and a group of slaves connected thereto via a bus and to a communication method for interchanging data between the master and slaves in such a bus system. At least one communication frequency is associated with each slave in the group. The master places transmission data at different communication frequencies onto the bus in transmission phases. Each slave in the group reads in and processes those transmission data which have been placed onto the bus by the master at a frequency corresponding to the, or a, communication frequency associated with this slave and ignores and rejects those transmission data which have been placed onto the bus by the master at a frequency corresponding to a communication frequency associated with another slave in the group, with the result that each slave in the group can be individually addressed by the master by virtue of the fact that transmission data are transmitted from the master to each of the slaves in the group at that communication frequency which has been associated with said slave.
A communication method, in particular for automation purposes, for interchanging data between a master (M) and at least one group of slaves (1a, 1b, 1c, 2a, 2b, 2c, 3a, 3b, 3c, 3d) connected in parallel to said master (M) via a bus (B, B′) in a bus system including said master (M), said slaves (1a, 1b, 1c, 2a, 2b, 2c, 3a, 3b, 3c, 3d) and said bus (B, B′), characterized by the following steps:
A Bus system including a master (M) and at least one group of slaves (1a, 1b, 1c, 2a, 2b, 2c, 3a, 3b, 3c, 3d) connected in parallel to said master (M) via a bus (B, B′), characterized in that
Device, especially a master, a slave, a sensor, an actuator or a monitor, for connection with a bus system having a master (M) and at least one group of slaves (1a, 1b, 1c, 2a, 2b, 2c, 3a, 3b, 3c, 3d) connected in parallel to said master (M) via said bus (B, B′), characterized by including a module (IFFT) for transforming a bus signal from a frequency area to a time area and/or including a module (FFT) for transforming a signal from a time area to a frequency area, and/or including a module for determining the transmission quality, in particular a signal-to-noise ratio of a channel connection, and/or including a scrambler and/or a descrambler and/or a channel encoder and/or a channel decoder and/or a differential modulator and/or a differential.
Dependencies are inferred from the claim text.