Highway Addressable Remote Transducer (HART) is a standardized and widely used communication system for configuring industrial field communication. HART specifically relies on the equally widely used 4-20 mA standard and extends it to create modulated, industry-standard digital HART signals. The benefit for you is the combination of proven analog transmission of measured values and simultaneous digital communication with bidirectional, acyclic transmission. This enables transmission of diagnostics, maintenance and process information from field devices to higher-level systems. You can use standardized parameter sets for manufacturer-independent operation of all HART devices. HART device descriptions are used to integrate HART devices in SIMATIC PDM. This guarantees simple commissioning and operation of field devices even in inaccessible areas.