Rockwell Automation 1794-OB16D FLEX I/O Diagnostic Modules User Manual - Manual (Page 15)

13 Publication 1794-UM061A-EN-P - July 2006
Chapter
1
1794 FLEX I/O Diagnostic Digital Modules
Overview
Introduction
In this chapter, you will learn about the diagnostic input module, cat. no.
1794-IB16D, and the diagnostic output module, cat. no. 1794-OB16D.
General Description
This chapter contains an overview of the FLEX I/O diagnostic digital
modules, the 1794-IB16D input module and 1794-OB16D output module.
You can use the FLEX I/O diagnostic modules to help diagnose problems
with input and output field devices, I/O wiring and the user power supply.
Additionally, these modules can reduce installation start-up time and help
minimize time to find and fix failures.
This chapter explains how to use the FLEX I/O diagnostic modules to help
detect the following types of faults:
• Open input or output field devices
• Open input or output wiring
• Shorted output field devices
• Shorted input or output wiring
• Reversed polarity of user supply wiring
• Open user supply wiring or failed user supply (using one diagnostic
input channel)
Topic See Page
General Description 13
Install Your Digital Input or Output Module 16