Rockwell Automation 1769-IF4XOF2 Compact 8-Bit Low Resolution Analog I/O Combination Module - Manual (Page 61)

1 Publication 1769-UM008A-EN-P - November 2001
Chapter
5
Module Diagnostics and Troubleshooting
This chapter describes troubleshooting the analog input and output
channels. This chapter contains information on:
•
Safety Considerations When Troubleshooting on page 5-1
•
Module Operation vs. Channel Operation on page 5-2
•
Module Diagnostic Features on page 5-3
•
Critical vs. Non-Critical Errors on page 5-4
•
Module Condition Errors on page 5-6
Safety Considerations
When Troubleshooting Safety considerations are an important element of proper
troubleshooting procedures. Actively thinking about the safety of
yourself and others, as well as the condition of your equipment, is of
primary importance.
The following sections describe several safety concerns you should be
aware of when troubleshooting your control system.
Indicator Lights
When the green LED on the analog module is illuminated, it indicates
that power is applied to the module.
Activating Devices When Troubleshooting
When troubleshooting, never reach into the machine to actuate a
device. Unexpected machine motion could occur.
ATTENTION
!
Never reach into a machine to actuate a switch
because unexpected motion can occur and cause
injury.
Remove all electrical power at the main power
disconnect switches before checking electrical
connections or inputs/outputs causing machine
motion.