Downloads

Communication with machinery and control and measuring instruments is the basis of industrial automation. The simplest, most robust and oldest communication technique implemented is a current loop with a normal range of 4 mA to 20 mA. However, the obvious disadvantage is that a single loop allows only one-way communication from a sensor to an actuator. Developed in the mid-1980s, the HART ™ (Highway Addressable Remote Transducer) protocol allows two-way communication of additional information - in addition to the normal process variables - between intelligent field devices.

Date: 3/28/2019

url: https://www.novusautomation.com/en/download/the-hart-communication-protocol