Failed to change instruction's Class to Safety

Instruction contains data types invalid for use in Safety.
The
Logix Designer
application prevents the modification of a User Defined or Add-On Defined type that would cause an invalid data type for User Defined or Add-On Defined types that are referenced directly or indirectly by a
Safety
tag. (This includes nested structures.)
The
invalid
data types are:
  • REAL - Only invalid on GuardLogix(L6S) and Compact GuardLogix(L4S) controllers
  • LINT
  • ALARM-ANALOG
  • ALARM DIGITAL
ST Prescan routine is invalid for Safety.
Safety only supports RLL.
Safety add-on instructions don't support Postscan routines.
Postscan routines are not supported in Safety add-on instructions. Safety only supports RLL.
FBD EnableInFalse routine is invalid for Safety.
FBD EnableInFalse routines are not supported in Safety add-on instructions. Safety only supports RLL.
For more information, see
Safety Add-On Instruction class change
.
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