Following is a list of the PLCs and what you must do to change the mode to REMOTE.
ControlLogix and CompactLogix: These controllers have a key hole directly on the controller to switch from one mode to another (RUN, REM, and PROG positions.
SoftLogix: Since this is a software PLC, you can change the mode by right-clicking on the controller in the SoftLogix software.
The controller must be in PROGRAM or REMOTE PROGRAM mode in order to download a new program. If the controller is in RUN mode, you can only change modes directly from the controller.
We strongly suggest that you always leave the controller in REMOTE mode.