Rockwell Automation Publication 1769-UM011H-EN-P - April 2012 133
Status Indicators Appendix A
CompactFlash Indicator
This is the CompactFlash card status indicator present on all CompactLogix
controllers.
RS-232 Serial Port Status
Indicators
These are the RS-232 serial port status indicators present on all CompactLogix
controllers.
ATTENTION: Do not remove the CompactFlash card while the controller
is reading from or writing to the card, as indicated by a flashing green CF
status indicator. This could corrupt the data on the card or in the
controller, as well as corrupt the latest firmware in the controller.
Indicator Condition Interpretation
CF Off There is no activity.
Flashing green The controller is reading from or writing to the CompactFlash card.
Flashing red CompactFlash card does not have a valid file system.
Indicator Condition Interpretation
DCH0 Off Channel 0 configuration differs from the default serial configuration.
Steady green Channel 0 has the default serial configuration.
CH0 Off No RS-232 activity.
Flashing green RS-232 activity.
CH1
(1769-L31
only)
Off No RS-232 activity.
Flashing green RS-232 activity.
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