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2.5 Powermeter Internal Data Tables
2.5.1 Data conversion
There are 11 methods of data conversion in the MODBUS PLC. To define data conversion it is
necessary to define HI Scale, LO Scale and Conversion. Any range between 0.01 and
99,999.00 can be entered in the HI and LO scales. Conversion is carried out by one of the
following methods:
NONE The data will be presented exactly as retrieved by the communication program
from the Powermeter.
Linear The raw input data X must be in the range 0 - 4095. Conversion:
Y = X / 4095 * (HI - LO ) + LO
When a value is written to the Powermeter, the conversion is carried out in reverse to
produce the written value:
Y = 4095 * ( X - LO ) / (HI - LO )
LIN1 (Linear) The raw input data X must be in the range 0 - 1023. Conversion:
Y = X / 1023 * (HI - LO ) + LO
When a value is written to the Powermeter, the conversion is carried out in reverse to
produce the written value:
Y = 1023 * ( X - LO ) / (HI - LO )
LIN2 (Linear) The raw input data X must be in the range 0 - 999. Conversion:
Y = X / 999 * (HI - LO ) + LO
When a value is written to the Powermeter, the conversion is carried out in reverse to
produce the written value:
Y = 999 * ( X - LO ) / (HI - LO )
LIN3 (Linear) The raw input data X must be in the range 0 - 9999. Conversion:
Y = X / 9999 * (HI - LO ) + LO
When a value is written to the Powermeter, the conversion is carried out in reverse to
produce the written value:
Y = 9999 * ( X - LO ) / (HI - LO )
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