Allen-Bradley GuardLogix 5580 Original Instructions Manual page 101

Does this safety function require operator
intervention after a safety output failure?
Write logic to latch output failure.
(Example Rung 0)
Write logic to set outputs to a safe
state. (Example Rung 2)
Write logic to unlatch output failure
(Example Rung 1)
Node 30 is an 8-point input/8-point output combination module.
If the output status is not OK, then latch the output faulted indication.
Node30:I.OutputStatus
0 /
If the raising edge of the fault reset signal is detected and the input status is OK, then unlatch the inputs faulted indication.
FaultReset InputFaultResetOneShot
1
Node30OutputsFaulted
2 /
Studio 5000 Logix Designer Application, Version 31 or Later, Safety-application Instructions
Figure 30 - Output Fault Latch and Reset Flowchart
Start
No
Yes
Write logic to latch output failure.
Done
Figure 31 - Ladder Diagram Example 3
Node30:I.OutputStatus
ONS
Rockwell Automation Publication 1756-RM012B-EN-P - April 2018
Yes
Is output fault information required for
diagnostic purposes?
(Example Rung 0)
RedundantOutputTag.O1 Node30:O.Pt00Data
RedundantOutputTag.O2
Appendix F
No
Node30OutputsFaulted
L
Node30OutputsFaulted
U
Node30:O.Pt01Data
101