A method for storing data for at least one of a device state, device diagnosis and calibration of a field device in a cloud, with the field device having a self-monitoring functionality. The method includes device-internal registering of first data for at least one of a device state, device diagnosis and calibration by the field device and transfer of the device-internally registered first data from the field device to the cloud. Moreover, the method includes registering second data for at least one of a device state, device diagnosis and calibration of the field device using an external service computer and transferring the second data from the external service computer to the cloud. Both the first data as well as also the second data are stored in the cloud.