Always False (AFI)
The AFI instruction sets the EnableOut to false.
Available Languages
Ladder Diagram
![Ladder Diagram_Always False (AFI)_v1](/content/dam/dita/en/factorytalk-design-studio/current/online-help/topics/graphics/ladderdiagram_alwaysfalse(afi)_v1.png/_jcr_content/renditions/original)
Operands
Ladder Diagram
None
Affects Math Status Flags
No
Major/Minor Faults
None specific to this instruction. See Common Attributes for operand-related faults
Execution
All conditions below the thick solid line can only occur during Normal Scan mode.
Condition | Action |
---|---|
Prescan | N/A |
Rung-condition-in is false | Clear EnableOut to false. |
Rung-condition-in is true | Clear EnableOut to false. |
Postscan | N/A |
Examples
Ladder Diagram
Use the AFI instruction to temporarily disable a rung while you are debugging a program. AFI disables all the instructions on this rung.
![FTStudio-AFI-LD-EX-V1](/content/dam/dita/en/factorytalk-design-studio/current/online-help/topics/instructions/common-content/graphics/ftstudio-afi-ld-ex-v1.png/_jcr_content/renditions/original)
Provide Feedback