Applications of HART-Protocol for Diagnosing Smart Instruments
Paasovaara, Ville (2020)
2020
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-202004094835
https://urn.fi/URN:NBN:fi:amk-202004094835
Tiivistelmä
This study explores how to enhance process plants’ predictive maintenance and response time to device failures by utilizing the HART-protocol to design a method for displaying four condensed status flags recommended by NAMUR NE107. The aim is to display these status flags in real time for the plant operator and maintenance worker, instead of having to plug in a handheld HART communicator device and request the information when the device has already malfunctioned.
In the beginning of the work the objective was to clarify the structure and function of HART-protocol, how HART commands work and the structural and operational layer of smart instruments. Different industrial field device communication protocols are also explained, and their use case and functions are compared to HART protocol. HART communication was tested in Siemens PCS7 environment and results were employed to create a method for displaying the device status.
The result of the project is an established method of communication with HART devices using HART commands and a communication block that was coded in structured command language to fit everything in one block for convenience. The results are overall as expected before the study, and the resulting method can be used to read device status and the practice of using HART commands can be implemented to be used for different use cases.
In the beginning of the work the objective was to clarify the structure and function of HART-protocol, how HART commands work and the structural and operational layer of smart instruments. Different industrial field device communication protocols are also explained, and their use case and functions are compared to HART protocol. HART communication was tested in Siemens PCS7 environment and results were employed to create a method for displaying the device status.
The result of the project is an established method of communication with HART devices using HART commands and a communication block that was coded in structured command language to fit everything in one block for convenience. The results are overall as expected before the study, and the resulting method can be used to read device status and the practice of using HART commands can be implemented to be used for different use cases.