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Reference Manual
00809-0100-4832, Rev AA
October 2004
Rosemount 3095FC
3-42
Figure 3-25. Configure Modbus
General Tab Screen
Scale Values Tab
The Scale Value tab allows the user to enter low and high floating point and
integer values for converting between integer and floating point numbers.
See Figure 3-26 on page 3-43
1. Select Configure > Modbus > Configuration > Scale Values tab.
2. Enter the Integer Scale values. In the 3095FC, the endpoints of the
Analog Inputs and the Analog Outputs are used to scale or calibrate
the range of the input or output signal. Because each I/O point can
have different scaling, the raw values from the Analog I/O points are
normalized to the values defined by the Integer Scale Low Value and
Integer Scale High Value fields.
3. Enter the Low Value that contains the 0% value for all analog data
(Type 3, Parameter 17 and Type 4, Parameter 9) registers. Enter the
High Value that contains the 100% value for all analog data (Type 3,
Parameter 17 and Type 4, Parameter 9) registers.
NOTE
The High and Low Value fields are signed integers, so they can range from
zero to 32767. These data fields can also be used to scale the Analog I/O to
integer values with an implied decimal point. For example: All Analog I/O Raw
values can be transmitted with 0 to 1000 values (0 to 100.0, decimal point
implied) by setting the values in this field to 0 for the Integer Scale Low Value
and 1000 for the Integer Scale High Value.