FIELD BUS COUPLER FOR CONNECTING MODULES TO A FIELD BUS AND METHOD FOR ADDRESSING SUCH MODULES
The invention relates to a method for addressing modules (5) which are connected to a field bus coupler (3) via a sub-bus (4) and are connected to a field bus (2) of an industrial automation system via the field bus coupler (3). The method has the following steps: - storing an assignment vector (Z) in a memory (32) of the field bus coupler (3), wherein the assignment vector (Z) reflects a current configuration of the modules (5); - gradually determining the modules (5) currently connected to the sub-bus (4); - allocating an address determined using the assignment vector (Z) to the determined module (5), and - addressing the modules (5) using the allocated address. The invention also relates to a field bus coupler for connecting modules to a field bus of an industrial automation system via a sub-bus, which is set up to carry out said method.