36 CompactLogix Controller
Rockwell Automation Publication 1769-IN082C-EN-P - February 2013
Power Supply Status Indicator
The green power supply status indicator is located next to the lightbulb symbol and indicates
these power states:
• ON = +5 and +24V DC current available from power supply
• Off = No input power, power-fail enabled, or overvoltage exceeded/protection enabled
Controller Status Indicators
The six status indicators are located at the top left corner of the CompactLogix packaged
controller. Use this table as a reference when interpreting all six of the packaged controller status
indicators.
When power is first applied to the controller, the OK, NS, MS, and LNK status indicators display
a complex sequence of varying red and green states. This sequence indicates the power-up self
test and takes approximately 1…2 minutes for the packaged controller to complete.
Controller Status Indicators
Indicator Status Description
RUN Off The packaged controller is in Program or Test mode.
Steady green The packaged controller is in Run mode.
FORCE Off Either one of the following is true:
• No tags contain I/O force values.
• I/O forces are inactive (disabled).
Steady amber Either one of the following is true:
• I/O forces are active (enabled).
• I/O force values may or may not exist.
Flashing amber One or more input or output addresses have been forced to an On or Off condition, but
the forces have not been enabled.
BATT Off The battery supports memory.
Steady red The battery is in either one of the following states:
• Not installed
• 95% discharged and should be replaced
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