160 Rockwell Automation Publication 1756-UM022D-EN-P - May 2017
Appendix B Change Controller Type
Change from a Safety to a
Standard Controller
Upon confirmation of a change from a safety controller project to a standard
controller, some components are changed and others are deleted, as described
below:
• The safety partner is deleted from the I/O chassis.
• Safety I/O devices and their tags are deleted.
• The safety task, programs, and routines are changed to a standard task,
programs, and routines.
• All safety tags, except safety consume tags, are changed to standard tags.
Safety consume tags are deleted.
• Safety tag mappings are deleted.
• The safety network number (SNN) is deleted.
• Safety-lock and -unlock passwords are deleted.
• If the standard controller supports features that were not available to the
safety controller, those new features are visible in the Controller
Properties dialog box.
• Instructions can still reference modules that have been deleted and can
produce verification errors.
• Consumed tags are deleted when the producing module is deleted.
• As a result of the above changes to the system, safety-specific
instructions and safety I/O tags do not verify.
If the safety controller project contains safety Add-On Instructions, you must
remove them from the project or change their class to standard before changing
the controller type.
For more information about Add-On Instructions, see
Logix5000™ Controllers Add-On Instructions Programming Manual,
publication
1756-PM010.
TIP Peer safety controllers are not deleted, even if they have no
connections remaining.