12 1769-L20, 1769-L30 CompactLogix™ Controllers
Publication 1769-IN047C-EN-P - April 2003
Grounding Considerations
This product is intended to be mounted to a well-grounded mounting surface such
as a metal panel. Additional grounding connections from the controller’s mounting
tabs or DIN rail (if used), are not required unless the mounting surface cannot be
grounded. Refer to Industrial Automation Wiring and Grounding Guidelines,
Allen-Bradley publication 1770-4.1, for additional information.
Select the Controller’s Operating Mode
Use the keyswitch on the front panel of the controller to determine the controller’s
operating mode.
Keyswitch
Position
Description
RUN · Run the program and enable outputs.
· You cannot create or delete tasks, programs, or routines. You cannot create or delete tags
or edit online while the keyswitch is in the RUN position.
· You cannot change the mode using the programming software while the keyswitch is in
the RUN position.
PROG · Disable outputs.
· Upload projects.
· Create, modify, and delete tasks, programs, or routines.
· The controller does not execute (scan) tasks while the keyswitch is in the PROG position.
· You cannot change the mode through the programming software while the keyswitch is in
the PROG position.
REM Change between Remote Program, Remote Test, and Remote Run modes through the
programming software.
Remote Run · The controller executes (scans) tasks.
· Enable outputs.
· Edit online.
Remote Program · Disable outputs.
· Create, modify, and delete tasks, programs or routines.
· Download projects.
· Edit online.
· The controller does not execute (scan) tasks.
Remote Test · Execute tasks with outputs disabled.
· Edit online.
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