Compactflash Indicator; Serial Port Status Indicators - Allen-Bradley 1769 User Manual

CompactFlash Indicator

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