Allen-Bradley ControlLogix 5570 Reference Manual page 93

c. On the confirmation dialog, read the and be aware of the warning
messages.
d. On the confirmation dialog, click Yes.
e. Verify Errors and Warnings.
f. The 1756-L84ES safety controller retains the SIL 3/PLe
configuration.
Rockwell Automation Publication 1756-RM100F-EN-P - October 2018
Replacement Considerations with Safety Applications Chapter 4
93