Table Of Contents

Modbus Read Channel Properties

Last Modified: October 16, 2020

The Modbus register supports properties that affect how the device reads data.

Property Name Description
Register Type
  • Discrete Input—The register addressed represents a sensor input or other Boolean value to read.
  • Coil—The register addressed represents a output or internal bit to read.
  • Input Register—The register addressed represents an analog input value or other integer value to read.
  • Holding Register—The register addressed represents an analog output or internal number to read.
Address The address of the Modbus Register to read.
32-bit data type If true, 32 bits will be read from the Register at the specified Address.
First word low (32-bit data type) If checked, the 32-bit value read from the Register will have the low order word in the first 16 bits.
Floating-point (32-bit data type) If checked, the 32-bit value read from the Register will be interpreted as a floating-point number.
Unit Specify the unit to be used for the Engineering Value read from the Register.
Slope The slope value, represented by m in the following equation: Engineering Value=m(Raw Value)+b.
Offset The offset value, represented by b in the following equation: Engineering Value=m(Raw Value)+b.

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