Rockwell Automation 1753-PCS-PAR Using RSLogix Guard PLUS! with GuardPLC Controllers - Manual (Page 23)

Publication 1753-PM001A-EN-P - November 2005
Connect to the GuardPLC Controller 1-13
The Control Panel Online indicator will be GREEN if the controller is
in RUN Mode. The Online indicator may also be yellow, white, or red
based on its current state.
TIP
If you are successfully online with the GuardPLC
controller and in RUN mode (Green Online indicator
as shown above), you do not need to continue with
the steps 8 through 12. However, if you are not
online and in RUN mode, consult the flowchart on
page 1-5, and perform the appropriate steps.