Health indicators and display mnemonics – Rockwell Automation 1747-ACNR15 ControlNet Adapter Module Installation Instructions User Manual
Page 14
 
14 ControlNet Adapter Module
Publication 1747-IN017C-EN-P - May 2001
Troubleshooting With the Status Indicators and Status Display
The module has indicators on the front panel as shown below. These indicators 
consist of:
•
health indicators
•
status indicators
•
display of status and address
Use these indicators to troubleshoot the module.
The following tables describe how to use the indicators to troubleshoot your 
module.
Health Indicators and Display Mnemonics
OK LED
Display
Description
Probable Cause
Recommended Action
Off
None
Module is not 
communicating.
Power supply fault.
Check power supply, and 
seat adapter firmly in 
chassis.
Off
None
Module is not 
communicating.
Defective adapter.
Replace adapter.
Off
POST
Adapter is running 
Power On Self Test.
None
None
Amber
0000 through 
9999
Adapter is running 
Power On Self Test.
None
None
Amber
A/A
Adapter is 
displaying Series 
and Revision level.
None
None
ADDRESS/STATUS
ADDRESS/STATUS
B
A
A
A
A
B
OK
OK
Status Display and Net 
Address
Health Indicators ControlNet 
Status Indicators
1747-ACN15
1747-ACNR15