If we want to give a simple definition of the HART protocol, it must be said that the HART protocol is an international standard. It is a global standard for sending and receiving digital information. The transmission of information through analog wires between the smart device and the control system is monitoring or manual communication. More precisely defined, HART is a two-way communication protocol that provides data access between host systems. The host system can manage all the programs. The HART protocol stands for Highway Addressable Remote Transmitter. The HART protocol is an industrial communication protocol used to communicate with various components such as sensors, controllers and other components of industrial automation systems.
What is the Hart Protocol?
Simply put, HART is an industrial communication protocol. The HART protocol stands for Highway Addressable Remote Transducer and is used for communication based on the FSK standard. The HART protocol was developed by Rosemount Inc. company developed in the mid-1980s as a proprietary digital communications protocol. It became an open protocol in 1986. From that time until today, the capabilities of the HART protocol have been added daily. The main advantage of using the HART protocol is that it can communicate with the precision current loop of older analog devices. Moreover, in this situation The pair of cables used by the host system can only share analog. Today, the HART protocol is widely used in processing and instrumentation systems ranging from small automation applications to industrial applications.
performance
The HART protocol is a two-way digital communication of intelligent equipment without interfering with analog signals, which simultaneously modulates analog and digital signals on a pair of wires according to the FSK standard of analog signal. Digital parameters are sent as digital signals with applications such as process parameters, equipment configuration, calibration parameters, and error detection signals. These digital signals contain information such as device characteristics, calibrations, and errors that cannot be conveyed by analog 4-20 mA signals. Of course, all devices used in automation, transmitters, control valves, computers, industrial unit processes such as DCS and PLC control systems can use this protocol to communicate with each other.
Advantages of the HART protocol
- Its design is simple and easy to use.
- Low maintenance costs.
- It is very compatible with common analog devices.
- It can establish analog and digital communication at the same time.
- It has the ability to connect in multidrop mode
Conclusion
The Hart protocol is an industrial communication protocol used in various industries today. Knowing this protocol and its functionality will help us configure and configure automation systems. The HART protocol is used for device configuration, calibration parameters, etc. The main advantages and disadvantages of the HART protocol are its simple design and operation. In addition, maintenance is quick and cheap.