Rockwell Automation 1791DS-IBxxxx Guard I/O DeviceNet Safety Modules - Manual (Page 73)

Rockwell Automation Publication 1791DS-UM001J-EN-P - May 2013 73
Configure Modules with the Logix Designer Application Chapter 5
Configuration Ownership - Reset Ownership
The connection between the owner and the Guard I/O module is based on the
following:
· Guard I/O DeviceNet node address
· Guard I/O safety network number
· GuardLogix slot number
· GuardLogix safety network number
· Path from GuardLogix controller to Guard I/O module
· Configuration signature
If any of these change, the connection between the GuardLogix controller and
the Guard I/O module is lost, and the yellow yield in the project tree appears.
Reset ownership to reestablish the connection by using this procedure.
1. From within the Logix Designer application, open the safety I/O module
properties.
2. Click the Safety tab.
3. Click Reset Ownership.
Configuration Signature
The configuration signature is created by the Logix Designer application and
verified by the safety module. The configuration signature provides SIL 3
integrity of the configuration of a Guard I/O module.
· When a GuardLogix controller first connects to an unconfigured
Guard I/O module, the complete configuration is downloaded to the I/O
module.
· Any time the GuardLogix controller attempts to connect to a Guard I/O
module, if the configuration signatures are the same, then the
configuration does not need to be downloaded, because they already
match.
· Any time the GuardLogix controller attempts to connect to a Guard I/O
module and the signatures do not match, the module checks the module
node address, electronic keying, and safety network number. If these are all
correct, the controller will attempt to configure the module.