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This information is only provided for your information. Please consider the corresponding as initial idea. This idea may fit you for a specific scenario or – not. Please refer to the corresponding trade organisations of the fieldbus technologies (PNO, ETHETG, ODVA) as they specify requirements for fieldbus devices. These organisations can provide binding answers and may advise whether there is an exception possible. Please keep your customer in mind – what would the installing person on site need and expect? Applying for an exception should be the very last resort.
We summarised our experiences here. We do believe these information are true and backed-up by actual and up-to-date standards – however; we do not assume any responsibility for the here provided information – not direct and not indirect; not expressed and not implied either. Use any piece of information at your own risk.