{"id":7480,"date":"2020-01-19T12:31:25","date_gmt":"2020-01-19T15:31:25","guid":{"rendered":"https:\/\/www.altus.com.br\/?p=7480"},"modified":"2024-09-20T10:04:18","modified_gmt":"2024-09-20T13:04:18","slug":"o-que-e-e-para-que-serve-o-protocolo-hart","status":"publish","type":"post","link":"https:\/\/www.altus.com.br\/en\/post\/313\/o-que-e-e-para-que-serve-o-protocolo-hart","title":{"rendered":"What is the HART protocol and what is it for?"},"content":{"rendered":"

With the end of World War II and the fall of important geopolitical barriers, the world entered a new technological era. At this time, the convergence of the fields of scientific knowledge and industrial activity allowed the rapid development and absorption of cutting-edge technologies in all stages of industrial production, a movement that became known as the third industrial revolution. It was in this context of technological evolution that, a few decades later, in 1989, the HART<\/b> protocol emerged. An acronym for Highway Addressable Remote Transducer<\/u>, the protocol was created to facilitate the calibration and range and damping adjustments of analog equipment.<\/p>\n

Features and benefits of the protocol<\/h3>\n

Commonly used for communication between intelligent field devices and a control system, HART was the first digital bidirectional communication protocol that did not affect the analog control signal. The standard provides two simultaneous communication channels: a 4-20mA analog signal and a digital signal. The analog signal transmits the measured variable (in the case of a field instrument) using a 4-20mA loop, while the digital signal is used to carry additional information from the device, such as configuration standards, calibration, parameterization, descriptive TAGs, among others.<\/p>\n

HART can be used in applications across a wide range of industry segments, including hazardous environments. The protocol operates according to the Master-Slave standard, where the slave will only transmit a message if there is a request from the master, i.e., the field instrument (slave) will only send information when it receives a request from the control system (master).<\/p>\n

In terms of performance, HART stands out for having the following characteristics:<\/p>\n

    \n
  • Simple design, easy to operate and maintain;<\/li>\n
  • Compatibility with analog instrumentation;<\/li>\n
  • Analog signal and digital communication;<\/li>\n
  • Point-to-point or multidrop communication option;<\/li>\n
  • Flexible data access using up to two masters;<\/li>\n
  • Supports multivariable equipment;<\/li>\n
  • 500 ms response time (with up to two transactions);<\/li>\n
  • Compatible with products and other protocols from multiple vendors.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

    Conhe\u00e7a a hist\u00f3ria e as principais caracter\u00edsticas desse tradicional protocolo de comunica\u00e7\u00e3o.<\/p>","protected":false},"author":5,"featured_media":7481,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[389],"tags":[653],"class_list":["post-7480","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia-2","tag-protocolo-hart"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/posts\/7480","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/comments?post=7480"}],"version-history":[{"count":1,"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/posts\/7480\/revisions"}],"predecessor-version":[{"id":8179,"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/posts\/7480\/revisions\/8179"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/media\/7481"}],"wp:attachment":[{"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/media?parent=7480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/categories?post=7480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.altus.com.br\/en\/wp-json\/wp\/v2\/tags?post=7480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}