Basics of Hart Communicator
Introduction HART is a master-slave communication protocol  , which means that during normal operation, each  slave (field device) communication is initiated by a master  communication device. Two masters can connect to each HART loop. The primary master is generally a distributed control system (DCS), programmable logic controller (PLC), or a personal computer (PC). The secondary master can be a handheld terminal or another PC. Slave devices include transmitters, …