IMO i3N Series, Руководство пользователя

Страница: 45 / 94

45
Example 1:
The i3 configurator Scale function, found in the Advanced Math functions, allows for very easy conversion
of the raw input value into a meaningful reading. For example, a pressure transducer may be specified as
a 4-20mA signal to signify a 0-2000 psi pressure reading. With the analog channel set to the 4.20mA range,
the raw analog input value, which is in INT format ranges from 0 to 4mA to 32000 for 20mA. Use the Scale
function to obtain an Integer pressure reading using the 0-32000 raw input range and the sensor’s 0-
2000psi output range.
Example 2:
If readings with fractions are required, the raw Integer input value must first be translated in REAL, or
Floating-Point format. The I3 configurator INT-to-REAL Conversion function may be used to convert the
raw input value from INT to REAL format in an intermediate memory location. The SCALE function,
specified as REAL type, may be used to scale the converted raw value into a reading that supports digits
beyond the decimal place, i.e., 475.25psi.