Coupling device for three bus systems

摘要

Data bus coupling device (1) has first and second connection arrangements for first and second data buses (F1, F2), especially field buses, and a data processing device to enable data exchange between the buses. A third connection arrangement permits the connection of a third data bus, especially a peripheral bus (P), so that data can be exchanged between the three buses via the data processing device. Optimally the data processing device controls the transfer of both standard (S) and security-relevant data (F).