Safety Add-On Instructions
Safety Add-On Instructions are used in the safety task of GuardLogix safety controllers. Create a safety Add-On Instruction if you need to use your instruction in a safety application. Safety Add-On Instructions are subject to a number of restrictions. These restrictions, enforced by the Logix Designer application and all GuardLogix controllers, are listed here for informational purposes only.
· They may use only safety-approved instructions and data types.
· All parameters and local tags used in a safety Add-On Instruction must also be safety class.
· Safety Add-On Instructions use relay ladder logic only and can be called in safety routines only, which are currently restricted to ladder logic.
· Safety Add-On Instructions may be referenced by other safety Add-On Instructions, but not by standard Add-On Instructions.
· Safety Add-On instructions cannot be created, edited, or imported when a safety project is safety-locked or has a safety task signature.
· They may use only safety-approved instructions and data types.
· All parameters and local tags used in a safety Add-On Instruction must also be safety class.
· Safety Add-On Instructions use relay ladder logic only and can be called in safety routines only, which are currently restricted to ladder logic.
· Safety Add-On Instructions may be referenced by other safety Add-On Instructions, but not by standard Add-On Instructions.
· Safety Add-On instructions cannot be created, edited, or imported when a safety project is safety-locked or has a safety task signature.
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