Real time sampling – Rockwell Automation 1769-IF4FXOF2F Compact Combination Fast Analog I/O Module User Manual

Page 46

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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%.

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