In process plants with fieldbus plant operators benefit from the use of fieldbus for measurement and control tasks. Intelligent field devices provide higher levels of accuracy. Only one translation from an analog to a binary value is performed – and the transmission of this binary value is ensured using checksums and other mechanisms common to any digital transmission. This leads to control loops acting with higher accuracy thus creating better quality output with higher consistency.
Modern day field devices can transmit additional status information such as the break-away and run time of valves or other status referring to device usage. Predictive maintenance is performed based on the actual status of the field device versus time-based at regular intervals. DCS manufacturers respond with comprehensive asset management systems. They facilitate need-based maintenance activities sometimes doubling time intervals compared to standard procedures.
Additionally, remote configuration via the fieldbus speeds up change over activities i.e. in batch processes or when a field device is exchanged during plant operation. With all these and more benefits gained, fieldbus has proven its value even in the conservative segment of plant process automation.