fluid power apparatus and a sensor communication means for the transmission of the at least one sensor value as regards the sensor device there is a provision such that it includes a reading means for reading apparatus identification data characterizing the fluid power apparatus and the sensor device is adapted for the transmission of the apparatus identification data by way of the sensor communication means application_number US 4200908 A description the working embodiments of the invention include partially similar or functionally equivalent components which are not described twice over and are provided with the same reference numerals in the case of an automated system 10 valve clusters 11 a and 11 b are controlled by a central master control means 12 as for example a routing computer 13 the valve clusters 11 a and 11 b are connected with valve cluster communication means 14 a and 14 b for external communication on a system bus 15 for example a field bus by way of external interfaces 96 for example bus interfaces the control means 12 control the valve clusters 11 a and 11 b via the system bus 1 which is connected in a wired or a wireless manner the valve clusters 11 a and 11 b comprise valve modules 16 which are placed in a row with the communication means 14 a and 14 b the valve modules 16 serve for fluid.