Analog range selection, Valid input data word formats/ranges – Rockwell Automation 1769-IF4XOF2 Compact 8-Bit Low Resolution Analog I/O Combination Module User Manual

Page 58

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Publication 1769-UM008A-EN-P - November 2001

4-14 1769-IF4XOF2 Module Data, Status, and Configuration Channels

Analog Range Selection

The analog input range selection is accomplished by proper wiring of
the input channels.

Valid Input Data Word Formats/Ranges

The analog input data received at the module is converted to
RAW/proportional data format. Unlike the 1769-IF4 and 1769OF2.
on-board scaling is not provided by the module. You must do this via
your control program.

The following table shows the valid input data format for the data
range provided by the module.

Table 4.9 Valid Input Data

Input Range

Input Value

Example Data

Input Range

Condition

Raw/Proportional Data

Decimal Range

0 to +10V dc

Over 10.5V dc

+11.0V dc

Over-range

(1)

(1) The module’s maximum range is 10.5V or 21 mA. An over-range flag is set at either value. This flag automatically resets when the input data is below the over-range value.

32640

+10.5V dc

+ 10.5V dc

Over-range

(1)

32640

0.0V dc to

+10.0V dc

+10.0V dc

Normal

31104

5.0V dc

Normal

15488

0.0V dc

Normal

0

0 to 20 mA

Over 21.0 mA

+22.0 mA

Over-range

(1)

32640

21.0 mA

+21.0 mA

Over-range

(1)

32640

0.0 mA to 20.0 mA

+20.0 mA

Normal

31104

+10.0 mA

Normal

15488

0.0 mA

Normal

0

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