Rockwell Automation 1756-L7x GuardLogix 5570 Controllers - Manual (Page 73)

Rockwell Automation Publication 1756-UM022A-EN-P - November 2012 73
Add, Configure, Monitor, and Replace CIP Safety I/O Chapter 5
7. Click to the right of the safety network number to open the Safety
Network Number dialog box.
8. Click Set.
9. Verify that the Network Status (NS) status indicator is alternating
red/green on the correct module before clicking Yes on the confirmation
dialog box to set the SNN and accept the replacement module.
10. Follow your company-prescribed procedures to functionally test the
replaced I/O module and system and to authorize the system for use.