Change the Operation Mode
You can use the keyswitch on the front of the controller to change the operation mode.
Controller Keyswitch
To change the operation mode, you must physically change the position of the keyswitch to correspond with the desired operation mode, as described in the following table.
Keyswitch Position | Operation Mode |
|---|---|
RUN | Run mode |
REM |
|
PROG | Program mode |
When the keyswitch is in the REM position, there are three possible modes:
- To activate Remote Run mode, move the keyswitch from RUN to REM.
- To activate Remote Program mode, move the keyswitch from PROG to REM.
- To activate Remote Test mode, use the Logix Designer application along with the REM keyswitch position.
When the mode keyswitch on the controller is set to RUN mode, features like online editing, program downloads, and firmware updates are prohibited. For a list of prohibited features, see Controller Operation Modes.
The keyswitch provides a mechanical means to enhance controller and control system security. The physical switch can complement other authorization and authentication methods that similarly control user-access to the controller, such as the
FactoryTalk® Security
service.
IMPORTANT:
During runtime, we recommend that you place the controller keyswitch in RUN mode and remove the key from the switch. By removing the key, you discourage unauthorized access to the controller or potential tampering with the program of the controller, configuration, or firmware.
Place the keyswitch in REM or PROG mode during controller commissioning and maintenance and whenever access is needed to change the program, configuration, or firmware.
Provide Feedback