Spectrum Controls 2080sc-NTC - Manual (Page 12)

Micro800™ 4 Ch Universal Thermistor Input Module 12
Publication 0100198-01 Rev. A
The value is a signed, 16-bit integer. It represents temperature in
degrees Celsius multiplied by 100 when the Equation is not set to
Resistance.
If the Equation is set to Resistance, the values represent ohms divided
by 10.
The Maximum cannot be not be equal to, or less than, the Minimum. An
invalid configuration is set in that case.
This format allows for temperature spans from +327.67C to -327.68C.
Setting extreme values does not guarantee measurement within that
range.
Negative Resistance values are not valid.
Temperature example:
Enter 8000 for 80.00C as the Maximum.
Enter -2000 for -20.00C as the Minimum.
Resistance example:
Enter 10000 for 100 K ohms as the Maximum.
Enter 1 for 10 ohms as the Minimum.
Resistance spans are from 0 to 327,670 ohms.
String Parameters (COEFF-A/BETA, COEFF-B/R@25C, C)
These string parameters are ignored when the Equation is set to
Resistance.
COEFF-A serves as the parameter for BETA when Equation is set to
BETA.
COEFF-B serves as the parameter for R@25C when Equation is set to
BETA.
Due to the limitation of CCW, it is not possible to use a raw floating point
data type in the configuration. Instead, strings are used. The strings are
in standard IEEE 754 floating point format.
The Steinhart-Hart coefficients presented in the thermistor datasheet are
entered here. In the case of a BETA configured thermistor, only COEFF-
A/BETA and COEFF-B/R at 25C are used.