User guide

Rockwell Automation Publication 1768-UM002C-EN-P - April 2012 123
Appendix B
Change Controller Type in RSLogix 5000 Projects
Because safety controllers have special requirements and do not support certain
standard features, you must understand the behavior of the system when
changing the controller type from standard to safety or from safety to standard in
your RSLogix 5000 project. Changing controller type affects the following:
• Supported features
• Physical configuration of the project, that is the safety partner and Safety
I/O
• Controller properties
• Project components such as tasks, programs, routines, and tags
• Safety Add-On Instructions
Changing from a Standard to
a Safety Controller
Upon confirmation of a change from a standard controller to a safety controller
project, safety components are created to meet the minimum requirements for a
safety controller:
• The safety task is created only if the maximum number of downloadable
tasks has not been reached. The safety task is initialized with its default
values.
• Safety components are created (that is safety task, safety program, and so
forth).
• A time-based safety network number (SNN) is generated for the local
chassis.
• Standard controller features that are not supported by the safety controller,
such as redundancy, are removed from the Controller Properties dialog
box (if they existed).
Topic Page
Changing from a Standard to a Safety Controller 123
Changing from a Safety to a Standard Controller 124
Changing from a 1756 GuardLogix Controller to a 1768 Compact GuardLogix
Controller or Vice Versa
125
Changing from a 1756-L7xS Controller to a 1756-L6xS or 1768-L4xS Controller 125
Additional Resources 125