Allen-Bradley GuardLogix 5580 Original Instructions Manual page 98

Appendix F Studio 5000 Logix Designer Application, Version 31 or Later, Safety-application Instructions
Does this safety function require operator
intervention after a safety input failure?
No
Write logic to set inputs to safe state.
No
Write logic to set safe state value when an input has a
98
Figure 27 - Input Fault Latch and Reset Flowchart
Start
Yes
Are the inputs used to drive
safety application instructions?
Yes
Can Circuit Reset be used for operator
intervention?
No
Write logic to latch input failure.
(Example Rung 0)
(Example Rungs 2 and 3)
Write logic to unlatch input failure.
(Example Rung 1)
Are any inputs used in an
instruction with diverse inputs?
(DIN or THRS)
Yes
fault. (Example Rung 4)
Done
Rockwell Automation Publication 1756-RM012B-EN-P - April 2018
No
Make sure that you select
Yes Manual Reset for the safety
application instruction.
Is input fault information required for
Yes
diagnostic purposes?
Write logic to latch input failure.
(Example Rung 0)
No