Rockwell Automation 1794-IJ2XT FLEX I/O Frequency Input Modules User Manual - Manual (Page 45)

35 Publication 1794-6.5.11 - September 2011
Chapter
4
Read and Write Configuration Maps for the
FLEX I/O Module
Overview This chapter describes how to configure, read data from, and map data to your
Frequency Input module.
Configure Your Frequency
Input Module The frequency module is configured using a group of data table words that are
transferred to the module using a block transfer write instruction.
The software features available for configuration are:
• frequency range
• number of pulses to sample
• sampling time
• safe states
• fault modes
• alarms
Configure your module for its intended operation by means of your
programming terminal and write block transfers.
During normal operation, the processor transfers from 1…8 words to the
module when you program a BTW instruction to the module address.
Read Data From Your
Module Read programming transmits status and data from the frequency input module
to the processor data table in one I/O scan. The processor user program
initiates the request to transfer data from the frequency input module to the
processor.
Topic Page
Configure Your Frequency Input Module 35
Read Data From Your Module 35
Map Data for the Module 36
Frequency Input Module Image Table Mapping 36
Chapter Summary 49