User manual

Publication 1768-UM001C-EN-P - November 2007
122 Status Indicators
CompactFlash Card Status Indicator
RS-232 Serial Port Status
Indicators
The RS-232 serial port has two status indicators.
Faceplate Pushbutton
On the faceplate of the controller, there is a recessed pushbutton.
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. This could corrupt the data on the card or in
the controller, as well as corrupt the latest firmware in
the controller.
CompactFlash Status Indicators
Indicator Condition Interpretation
CF Off 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.
RS-232 Status Indicators
Indicator Condition Interpretation
DCH0 Off Channel 0 is configured differently than the default serial
configuration.
Steady green Channel 0 has the default serial configuration.
CH0 Off There is no RS-232 activity.
Flashing green There is RS-232 activity. No action is required.
Pushbutton Actions
If you access the pushbutton The action
After power is applied to the
controller
Resets the RS-232 configuration setting to the
defaults
While the controller is powering up Clears the user program from controller memory