C - troubleshooting your system, Understanding the controller indicator status, Controller status led indicators – Rockwell Automation 1763 MicroLogix 1100 Programmable Controllers User Manual User Manual
Page 187: Appendix c, Troubleshooting your system, Appendix
185
Publication 1763-UM001D-EN-P - March 2011
Appendix
C
Troubleshooting Your System
This chapter describes how to troubleshoot your controller. Topics include:
•
understanding the controller status indicators
•
controller error recovery model
•
analog expansion I/O diagnostics and troubleshooting
•
calling Rockwell Automation for assistance
Understanding the
Controller Indicator Status
The MicroLogix 1100 provides three groups of status indicators:
•
the status LEDs on the top of the controller,
•
the status indicators on the LCD
•
the I/O status indicators on the LCD.
Together they provide a mechanism to determine the current status of the
controller if a programming device is not present or available.
Controller Status LED Indicators
Controller LED Location
Controller LED Indicators
LED
Color
Indicates
POWER
off
No input power, or power error condition
green
Power on
RUN
off
Not executing the user program
green
Executing the user program in run mode
green flashing
Memory module transfer occurring
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