Real time sampling – Rockwell Automation 1769-IF4FXOF2F Compact Combination Fast Analog I/O Module User Manual
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Publication 1769-UM019A-EN-P - October 2008
Chapter 3 Module Data, Status, and Channel Configuration
Percent Range
The input data is presented as a percentage of the normal operating
range. For example, 0…10V DC equals 0…100%. The amount over
and under the normal operating range (the full-scale range) is also
supported.
Valid Input Data Word Formats/Ranges
This table shows the valid formats and minimum/maximum data
ranges provided by the module.
Real Time Sampling
This parameter instructs the module how often to initiate a conversion
cycle that will convert each enabled input channel and then place that
data into the Input Data file. A conversion cycle is defined as the
sequential conversion of each input that is enabled. When the module
has performed a conversion on each of the enabled inputs, it is ready
to begin the next conversion cycle. This feature is applied on a
module-wide basis.
During module configuration, you specify a Real Time Sampling (RTS)
period by entering a value into Word 0 of the Configuration Data file.
This value entered in Word 0 can be in the range of 0…5000 and
indicates the conversion cycle rate the module will use in 1 ms
increments.
Valid Input Data
Normal
Operating
Input Range
Full Range
(1)
Raw/
Proportional
Data
Engineering
Units
(2)
Scaled-for-PID
Percent Range
(3)
Full Range
Full Range
Normal
Operating
Range
Full Range
Normal
Operating
Range
Full Range
-10…10V DC
-10.5…10.5V
-32,766…
32,766
-10,500…10,500
0…16,383
-410…16,792
-10,000…
10,000
-10,500…10,500
0…5V DC
-0.5…5.25V
-500…5250
-1638…17,202
0…10,000
-1000…10,500
0…10V DC
-0.5…10.5V
-500…10,500
-818…17,202
-500…10,500
1…5V DC
0.5…5.25V
500…5250
-2048…17,406
-1250…10,624
0…20 mA
0…21 mA
0…21,000
0…17,202
0…10,500
4…20 mA
3.2…21 mA
3200… 21,000
-818…17,406
-500…10,624
(1) Includes amounts over and under normal operating range.
(2) 1 count = 0.001V or 0.001 mA.
(3) 1 count = 0.01%.