Mitsubishi Electric MELSEC iQ-R User Manual page 172

Data conversion
The following shows how to perform data conversion for the PresentValue property value of an AnalogInput object,
AnalogOutput object, and AnalogValue object.
■ AnalogInput object
The value of a PresentValue property in the buffer memory is read as 16-bit signed integer. After the value is converted to 32-
bit floating point real number, the value is stored to a PresentValue property in the internal memory.
The calculation formula is as follows:
PresentValue = ((Ra - Rb) * D + Rb * Ia - Ra * Ib)/(Ia - Ib)
(16-bit signed integer read from buffer memory = D, Real number A = Ra, Real number B = Rb, Integer A = Ia, Integer B = Ib)
Operating procedure
1.
Select [BACnetObject] to open the "BACnet Objects" screen.
2.
Click the [Browse] button of an ObjectType to perform data conversion.
3.
Click the [Set] button of an object in "Data Conversion" to perform data conversion.
1 FUNCTIONS
170
1.12 Configuration Function