Rockwell Automation 1771-IFF/A,D17716.5.116 FAST ANALOG INPUT MODULE - Manual (Page 29)

3–3 Overview of the Fast Analog Input Module
Publication 1771Ć6.5.116 - May 1996
3. The module converts analog signals into binary or BCD format,
and stores theses values until the processor requests their transfer.
4. When instructed by your ladder program, the processor performs
a read block transfer of the values and stores them in a data table.
5. The processor and module determine that the transfer was made
without error, and that input values are within specified range.
6. Your ladder program can use and/or move the data (if valid)
before it is written over by the transfer of new data in a
subsequent transfer.
7. Your ladder program should allow write block transfers to the
module only when enabled by operator intervention or at
power-up.
The accuracy of your input module is described in Appendix A.
In this chapter you read about the functional aspects of the input
module and how the module communicates with the programmable
controller.
Accuracy
Chapter Summary