Rockwell Automation 1756-SPESMNRMXT GuardLogix Controllers User Manual - Manuel (Page 151)

Rockwell Automation Publication 1756-UM020I-EN-P - August 2012 151
Change Controller Type in RSLogix 5000 Projects Appendix C
Changing from a 1756
GuardLogix Controller to a
1768
Compact GuardLogix
Controller or Vice Versa
When you change from one safety controller type to another, the class of tags,
routines, and programs remains unaltered. Any I/O modules that are no longer
compatible with the target controller are deleted.
The representation of the safety partner is updated to appear appropriately for
the target controller:
• The safety partner is created in slot x (primary slot + 1) when changing to
a 1756 GuardLogix controller.
• When changing to a 1768 Compact GuardLogix controller, the safety
partner is removed because it is internal to the Compact GuardLogix
controller.
Changing from a 1756-L7xS
Controller to a 1756-L6xS or
1768-L4xS Controller Floating-point instructions, such as FAL, FLL, FSC, SIZE, CMP, SWPB, and
CPT are supported in 1756-L7
xS controllers, but not in 1756-L6xS and
1768-L4 xS controllers. If your safety program contains these instructions,
verification errors will occur when changing from a 1756-L7 xS controller to a
1756-L6 xS or 1768-L4xS controller.
Additional Resources Refer to the Logix5000 Controllers Add-On Instructions Programming Manual,
publication
1756-PM010 , for more information on Add-On Instructions.
TIP A 1756 GuardLogix controller supports 100 safety programs in the safety
task while a 1768 Compact GuardLogix controller supports 32.