User guide

8 Rockwell Automation Publication 2080-UM003A-EN-E - March 2013
Chapter 2 Discrete and Analog Expansion I/O Features
• Engineering Units – The module scales the analog input data to the actual
current or voltage values for the selected input range. The resolution of the
engineering units is 0.001V or 0.001 mA per count.
• Percent Range – The input data is presented as a percentage of the normal
operating range. For example, 0V…10V DC equals 0…100%. The amount
over and under the normal operating range (the full-scale range) is also
supported.
Valid Range of the Data Formats for 2085-IF4, 2085-IF8, and 2085-OF4
The valid range of each Data Format corresponds to the full range of each Type/
Range (or normal range). For example, the full range of 0…20 mA is 0…21 mA.
Valid Range of the 2085-IF4 and 2085-IF8 Data Formats
Data Format Type/Range
0…20 mA
(4)
(4) The full range value of:
a. 0…20 mA is 0…21 mA
b. 4 to 20 mA is 3.2…21 mA
c. -10…10V is -10.5…10.5V
d. 0…10V is -0.5…10.5V
4…20 mA
(4)
-10…10V
(4)
0…10 V
(4)
Raw/Proportional Data
(1)
(1) See Convert Analog Value to Data Format Value on page 9.
-32768…32767
Engineering Units
(2)
(2) The resolution is 0.001V or 0.001 mA per count. For example, 9999 here means 9.999V or 9.999 mA
(or 9999 x 0.001).
0…21000 3200…21000 -10500…10500 -500…10500
Percent Range
(3)
(3) The resolution is 0.01% per count. For example, 9999 here means 99.99% (or 9999 x 0.01%). See Convert
Analog Value to Data Format Value on page 9
0…10500 -500…10625 Not supported -500…10500
Valid Range of the 2085-OF4 Data Formats
Data Format Type/Range
0…20 mA
(4)
(4) The full range value of:
a. 0…20 mA is 0…21 mA
b. 4…20 mA is 3.2…21 mA
c. -10…10V is -10.5…10.5V
d. 0…10V is 0…10.5V
4…20 mA
(4)
-10…10V
(4)
0…10V
(4)
Raw/Proportional
Data
(1)
(1) See Convert Analog Value to Data Format Value on page 9.
-32768…32767
Engineering Units
(2)
(2) The resolution is 0.001V or 0.001 mA per count. For example, 9999 here means 9.999V or 9.999 mA (or 9999 x
0.001.
0…21000 3200…21000 -10500…10500 0…10500
Percent Range
(3)
(3) The resolution is 0.01% per count. For example, 9999 here means 99.99% (or 9999 x 0.01%). See Convert
Analog Value to Data Format Value on page 9.
0…10500 -500…10625 Not supported 0…10500