Selecting Data Formats (Bits 12 Through 14); Data Format; Raw/Proportional Data - Spectrum Controls 1769 User Manual

4-4 Compact™ IO Isolated RTD/Resistance Module
Table 4-3 (Channel Data Word Format)
Input
Engineering Units x 10
Type
˚ Celsius
Pt 385 -200 to +850
Pt 3916 -200 to +630
10 Cu 426 -100 to +260
100 Ni 618 -100 to +260
120 Ni 672 -80 to +260
604 NiFe 518 -100 to +200
150 ohm
0 to +1500
500 ohm
0 to +500
1000 ohm
0 to +1000
3000 ohm
0 to +3000
5
When resistances are selected, the temperature setting is ignored and the input data is the same for either °C or
°F selection.
User's Manual Pub. 0300241-01 Rev. A

4.2.4 Selecting Data Formats (Bits 12 through 14)

This selection configures channels 0 through 5 to present analog data in any of the
following formats:
•

Raw/Proportional Data

•
Engineering Units x 1
•
Engineering Units x 10
•
Scaled for PID
•
Percent Range
Engineering Units x 1
˚ Fahrenheit ˚ Celsius
-328 to 1562 -2000 to +8500
-328 to 1166 -2000 to +6300
-148 to 500 -1000 to +2600
-148 to 500 -1000 to +2600
-112 to 500 -800 to +2600
-148 to 392 -1000 to +2000
5
0 to +15000
5
0 to +5000
5
0 to +10000
5
0 to +30000
Note: The engineering units data formats represent real engineering temperature
units provided by the module to the controller. The raw/proportional counts, scaled-
for-PID and percent of full-scale data formats may yield the highest effective
resolutions, but may also require that you convert channel data to real engineering
units in your control program.
Raw/Proportional Data
The value presented to the controller is proportional to the selected input and scaled into
the maximum data range allowed by the bit resolution of the A/D converter and filter
selected. The raw/proportional data format also provides the best resolution of all the
data formats.
If you select the raw/proportional data format for a channel, the data word will be a
number between -32767 and +32767. For example, if a Pt 385 RTD is selected, the

Data Format

Scaled
For
˚ Fahrenheit
PID
-3280 to 15620 0 to 16383
-3280 to 11660 0 to 16383
-1480 to 5000 0 to 16383
-1480 to 5000 0 to 16383
-1120 to 5000 0 to 16383
-1480 to 3920 0 to 16383
5
0 to 16383
5
0 to 16383
5
0 to 16383
5
0 to 16383
Proportional Counts Percentage
-32767 to 32767 0 to 10000
-32767 to 32767 0 to 10000
-32767 to 32767 0 to 10000
-32767 to 32727 0 to 10000
-32767 to 32767 0 to 10000
-32767 to 32767 0 to 10000
-32767 to 32767 0 to 10000
-32767 to 32767 0 to 10000
-32767 to 32767 0 to 10000
-32767 to 32767 0 to 10000