Rockwell Automation Publication 5069-UM002A-EN-P - January 2019 95
Start to Use the Controller Chapter 3
Controller Reset
You can use the reset button to perform one of the following controller resets:
•
Stage 1 Reset
•
Stage 2 Reset
Stage 1 Reset
The stage 1 reset completes the following:
• Clears the application program and memory.
• Retains the Ethernet port network settings, including the EtherNet/IP
mode and all IP address settings.
• Retains APR (motion position info) information.
• Retains all PTP configuration (Time Synchronization) parameters.
• Retains WallClockTime within the energy retention capability of the
module.
• Creates a timestamped entry in the Controller Log that a Stage 1 Reset
event has occurred.
• Resets the controller to begin the controller startup process.
IMPORTANT The processes to perform both controller reset types requires that you press
the reset button and hold it in place during the controller power-up
sequence.
• If you press the reset button when the controller is powered, neither the
Stage 1 nor Stage 2 reset occurs.
• If you press the reset button when the controller is powered, the COS is
affected. For example, if the controller is in Program or Remote
Programmode and you press and hold the reset button for 10…15
seconds, the COS restarts in UTIL mode.
For more information on what happens to the COS when you press the
reset button while the controller is powered, see
Use the Reset Button
with the COS on page 218.
IMPORTANT Because port enable/disable status is associated with the application
program, the Ethernet port becomes enabled after a Stage 1 or Stage 2
reset.
IMPORTANT A stage 1 reset occurs only if the controller contains a user application.
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