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Rockwell Automation Publication 1790-UM001B-EN-P - April 2021
Appendix A Install, Wire, and Configure PROFIBUS Modules
1790P-TN4C0 Data Structure
Analog Input Image
The input image file represents data words and status bits. Input words 0...3
hold the input data that represents the value of the analog inputs for channels
0...3. These data words are valid only when the channel is enabled and there are
no errors. Input word 4 holds the status bits. Analog input data is presented as
raw/proportional.
Input words 5 and 6 contain input data for two optional discrete input
expansion modules.
1790P-N4C0/TN4C0 Configuration
Each analog current input is configured for either the 4
…
20 mA or 0
…
20 mA
range by using the programming software compatible with the controller or
scanner. See
Configure Analog Modules with SST PROFIBUS Configuration
for an example of configuration using the SST PROFIBUS
Configuration Tool.
Analog input data is presented as raw/proportional. The full 12-bit resolution is
used over the entire span of the input full scale range, as shown in
The input data files are the same as those shown for the 1790D-TN4CO.
See
Analog Input Data File on page 25
for more information.
1790P-TNOC2 Data Structure
Analog Output Image
The output image file represents data words. Output words 0 and 1 hold the
output data that represents the value of the analog outputs for channels 0
and 1. Analog output data is presented as raw/proportional.
Output words 2 and 3 contain output data for two optional discrete output
expansion modules.
Analog output data is presented as raw/proportional. The full 12-bit resolution
is over the entire span of the output full scale range, as shown in
The output data files are the same as those shown for the 1790D-TNOC2.
See
Install, Wire, and Configure PROFIBUS Modules on page 47
for more
information.
Table 43 - Module Bit Resolution
Input Full Scale Range
HEX Data Range
Decimal Data Range
Input Resolution
4
…
20 mA
0000
…
0FFF
0
…
4095
3.90
A
0
…
20 mA
0000
…
0FFF
0
…
4095
4.88
A
Table 44 - Module Bit Resolution
Output Full Scale Range
HEX Data Range
Decimal Data Range
Input Resolution
0
…
20 mA
0000
…
0FFF
0
…
4095
4.88
A
Содержание Allen-Bradley 1790D-N0C2
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