Field device e.g. sensor, diagnosing device for hierarchically- structured, distributed control system, has processing and receiving units connected by communication connection, where diagnose data is requested via receiving unit

摘要

The device has a processing unit (43) physically separated from a receiving unit (41). The processing unit and the receiving unit are logically connected with each other by a wireless communication connection (42). The receiving unit is physically assigned to an input/output device (2). The receiving unit is included into a field bus line, which is led to a field device (3). Diagnose data of the field device is requested from the diagnosing device via the receiving unit and is communicated to the processing unit during a communication pause between the control system (1) and the field device.