Replacement with ‘configure only when – Rockwell Automation 1756-L7x GuardLogix 5570 Controllers User Manual
Page 70
70
Rockwell Automation Publication 1756-UM022A-EN-P - November 2012
Chapter 5
Add, Configure, Monitor, and Replace CIP Safety I/O
If the entire routable CIP Safety control system is not being relied on to maintain
SIL 3/PLe during the replacement and functional testing of a module, the
Configure Always feature may be used. Go to
Module replacement is configured on the Safety tab of the GuardLogix
controller.
Figure 21 - Safety I/O Module Replacement
Replacement with ‘Configure Only When No Safety Signature Exists’
Enabled
When a module is replaced, the configuration will be downloaded from the
safety controller if the DeviceID of the new module matches the original. The
DeviceID is a combination of the node/IP address and the Safety Network
Number (SNN) and is updated whenever the SNN is set.
If the project is configured as ‘Configure Only When No Safety Signature Exists’,
follow the appropriate steps in
Table 23
to replace a POINT Guard I/O module
based on your scenario. Once you have completed the steps correctly, the
DeviceID will match the original, enabling the safety controller to download the
proper module configuration, and re-establish the safety connection.
Table 23 - Replacing a Module
GuardLogix Safety
Signature Exists
Replacement
Module Condition
Action Required
No
No SNN
(Out-of-box)
None. The module is ready for use.
Yes or No
Same SNN as original
safety task
configuration
None. The module is ready for use.