Chapter 3, Analog input image -1 – Rockwell Automation 1790D-NOV2/TNOV2 CompactBlock LDX Analog Modules User Manual
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Publication 1790-UM001A-EN-P - March 2002
Chapter
3
Module Data, Status, and Channel
Configuration for Analog Input Modules
This chapter examines the analog input module’s data table, channel
status, and channel configuration.
Analog Input Image
The input image file represents data words and status bits. Input
words 0 through 3 hold the input data that represents the value of the
analog inputs for channels 0 through 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.
1790D-N4C0/TN4C0 Configuration
Each analog current input may be configured for either the 4-20mA or
0-20mA range. This is most easily accomplished via RSNetWorx for
DeviceNet, as shown on page 3-8.