Always False Instruction (Afi); Relay Ladder - Allen-Bradley Logix5000 Reference Manual

Chapter 11 Program Control Instructions (JMP, LBL, JSR, RET, SBR, JXR, TND, MCR, UID, UIE, AFI, NOP, EOT, SFP, SFR, EVENT)
Always False Instruction
(AFI)
Description:
Arithmetic Status Flags:
Fault Conditions:
Condition
Prescan
Rung-condition-in is false
Rung-condition-in is true
Postscan
472
The AFI instruction sets its rung-condition-out to false.
Operands:

Relay Ladder

None
The AFI instruction sets its rung-condition-out to false.
Not affected
None
Execution:
Relay Ladder Action:
The rung-condition-out is set to false.
The rung-condition-out is set to false.
The rung-condition-out is set to false.
The rung-condition-out is set to false.
Example:
Use the AFI instruction to temporarily disable a rung while you are debugging a
program.
When enabled, the AFI disables all the instructions on this rung.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011