HART Communication Tutorial Part 3
HART COMMUNICATION LAYERS The HART protocol follows the seven-layer OSI (Open Systems Interconnection) protocol, although it uses only three layers: application, data link, and physical. The other four are not...
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HART Communication Tutorial Part 4
INSTALLATION AND GUIDELINES FOR HART NETWORKS HART devices use the conventional 4–20 mA current signal cable path to send the HART FSK signal. Thus, no extra communication paths are required to...