Highway Addressable Remote Transducer (HART) is a process control communication protocol. The HART signal consists of two parts, the analogue 4-20 mA current loop and a superimposed digital (variable frequency) signal. Traditionally the 4-20 mA loop is used for control and the superimposed digital signal for feedback, diagnostics and configuration. Along with the use of standard HART function codes, a DD file describes the device parameters which can be accessed by a host or handheld device. The majority of user configurable settings can be made over the HART interface.
- Up to 63 devices on each network
- Electronic Device Description (DD) files
- HART 7 compatible