Rockwell Automation 1791DS-IBxxxx Guard I/O DeviceNet Safety Modules - Manual (Page 122)

122 Rockwell Automation Publication 1791DS-UM001J-EN-P - May 2013
Chapter 7 Considerations When Replacing Guard I/O Modules
If the project is configured as ‘Configure Only When No Safety Signature Exists’,
follow the appropriate steps to replace a Guard I/O module based on your
scenario.
Scenario 1 - New Module is Out-of-box and Safety Signature Exists
1. Remove the old I/O module and install the new module.
2. Right-click your GuardLogix controller and choose Properties.
3. Click to the right of the safety network number to open the Safety
Network Number dialog box.
4. Click Set.
GuardLogix Project
Safety Signature
Exists Replacement Module
SNN Fault Action Required
Yes Out-of-box SNN not set, device
out-of-box Click Set.
Refer to Scenario 1 - New Module is
Out-of-box and Safety Signature
Exists on page 122
.
No Out-of-box None None.
Yes or No Same as original None None.
Yes Different from original SNN mismatch
SNN not set, device
out-of-box 1. Click Reset Ownership.
2. Click Set.
Refer to Scenario 2 - New Module
SNN is Different from Original and
Safety Signature Exists on page 123.
No Different from original SNN mismatch Click Reset Ownership.
Refer to Scenario 3 - New Module
SNN is Different from Original and
No Safety Signature Exists on
page 124
.