HART (Highway Addressable Remote Transducer) technology is one of the first fieldbus digital communication techniques that were implemented in instrumentation. HART is a widely acceptable and recognized standard for digitally enhanced 4-20 milliamp smart instrumentation communication. This technology extends the 4-20 mA standard analog transmission with a superimposed digital signal that contains process and instrument data.
The advantage of HART instruments is that they can be connected to standard 4-20 milliamperes systems and, at the same time; make use of digital communication to collect additional data.
The SmartPlant Instrumentation Calibration module supports only conventional analog
signals for HART instruments. Digital signals for HART are not supported.