If the project is configured for ‘Configure Always’, follow the appropriate steps to replace a safety I/O module.
  1. Remove the old I/O module and install the new module.
    If
    Then
    The module is in out-of-box condition
    Go to step 6.
    No action is needed for the controller to take ownership of the module.
    An SNN mismatch error occurs
    Go to the next step to reset the module to out-of-box condition.
  2. Right-click your I/O module and choose Properties.
  3. Select the Safety tab.
  4. Select Reset Ownership.
  5. Select OK.
  6. Follow your company-prescribed procedures to functionally test the replaced I/O module and system and to authorize the system for use.
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