The feeding of the internal electronics power supply is usually at the field bus coupler. The feed of the field supply is done galvanically separated, either via the infeed module to the bus coupler or via a separate potential infeed module. The separation allows a separate supply of the sensors and actuators. The snapping of I/O modules is automatically to the forwarding of the supply voltages (system supply DC 5V viaThe Data contacts and the field supply via the optionally available power contacts). Infeed Modules with diagnostic also enable a supply monitoring. Thus, a flexible user-specific supply structureA station. The power supply of the electronics is limited to a maximum value. This value is on the field bus coupler. If the sum of the internal power recording of all I/O modules this value is exceeded, an additional system infeed module is required. The feed of the field supply should also not exceed 10A. However, the different potential feed-in modules enable, the build-up of