Manual

Publication 1756-UM009C-EN-P - December 2010 49
ControlLogix Analog I/O Module Features Chapter 3
The table lists the resolution for each module’s range.
Current Values Represented in Engineering Units
Module Range Number of
significant bits
Resolution
1756-IF16 and
1756-IF8
+/- 10.25V
0…10.25V
0…5.125V
0…20.5 mA
16 bits 320 µV/count
160 µV/count
80 µV/count
0.32 µA/count
1756-IF6CIS 0 mA…21 mA 16 bits 0.34 µA/count
1756-IF6I +/- 10.5V
0…10.5V
0…5.25V
0…21 mA
16 bits 343 µV/count
171 µV/count
86 µV/count
0.34 µA/count
1756-IR6I 1…487 Ω
2…1000 Ω
4…2000 Ω
8…4020 Ω
16 bits 7.7 MΩ/count
15 MΩ/count
30 MΩ/count
60 MΩ/count
1756-IT6I and
1756-IT6I2
-12…30 mV
-12…78 mV
16 bits 0.7 µV/count
1.4 µV/count
1756-OF4 and
1756-OF8
+/- 10.4V
0…21 mA
16 bits
15 bits
320 µV/count
0.65 µA/count
1756-OF6VI +/- 10.5V 14 bits 1.3 mV
1756-OF6CI 0…21 mA 13 bits 2.7 µA
IMPORTANT
Because these modules must allow for possible calibration
inaccuracies, resolution values represent the available
Analog to Digital or Digital to Analog counts over the
specified range.