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SensyMaster FMT430/FMT450 Modbus Protocol Interface Description

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This document provides the Modbus protocol interface description for the ABB SensyMaster FMT430 and FMT450 thermal mass flowmeters, valid as of software version 01.01.03. It covers communication specifications, register tables, supported function codes, parameterization, error handling, and configuration of process variables, units, and gas types for industrial gas flow measurement applications.

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