This is an excerpt from a recent publication by Rockwell:

This document from Rockwell Automation provides a programmer with details about each available  for a Logix-based controller. This manual also gives you guidance and examples to monitor and process discrete and analog inputs and outputs for controlling devices.

To read the complete article, click on the below link:

– https://literature.rockwellautomation.com/idc/groups/literature/documents/rm/proces-rm215_-en-p.pdf

Sincerely,

Julius Frago,
The Automation School