Design and implementation of a remote HART configurator

HART (Highway Addressable Remote Transducer) communication protocol is a popular industrial automation protocol. Field devices with HART are usually deployed in hazardous environments, such as petrochemical, pharmaceutical, paint & coatings, chemical & mining industries, etc. These devices should be highly reliable and function well to communicate with controllers, such as programmable logic controllers or distributed control systems. If they were out of order or needed adjustments, technicians have to enter the hazardous areas to diagnose or reconfigure them. In order to keep the technicians safe, this paper proposes a remote HART configurator, which is based on HAA-5191 and Raspberry Pi. The HAA-5191 is a HART modem module manufactured by FineTek Co., Ltd. It connects the HART field device(s) with any microcontrollers which support UART. Further, the Raspberry Pi connects the HART modem to the Internet through Wi-Fi or Ethernet. This scheme lets users remotely configure the HART field device(s) via the Internet.