Rockwell Automation Logix5000 Program Parameters Programming Manual - Manual (Page 30)

Chapter 1 Connecting program parameters
Safety program to standard program connection rules
The following table summarizes the rules for using program parameters to connect
a safety program to a standard program.
Tip: The connection rules for programs also apply to Equipment Phases.
Program_A
(Safety)
Program_B
(Standard)
Input Output InOut Public Controller Scope
Tag (Safety Class)
Input — Yes — Yes Yes
Output — — — — —
InOut — — — — —
Public — — — — —
Controller Scope
Tag (Safety Class)
Yes Yes Yes Alias Alias
• An Input parameter from Program_A can connect to an Output parameter
of Program_A (wrap around).
• Safety mapping must be used to connect standard class tags to safety class
tags/parameters.
• Standard class tags cannot alias safety class tags.
30 Rockwell Automation Publication 1756-PM021A-EN-P - October 2014