PROCESS DEVICE WITH DIAGNOSTIC ANNUNCIATION

摘要

A process device (12) for coupling to a two-wire process control loop (18) includes diagnostic circuitry (64) configured to identify a failure or reduced level of performance or provide a prediction of a future failure or reduced level of performance. An output coupled to the two-wire process control loop (18) is configured to provide an analog output on the loop (18) related to an output from the diagnostic circuitry (64). A method is also provided.