And Later, Safety Application - Allen-Bradley 1756-L61S Reference Manual

Appendix F RSLogix 5000 Software, Version 14 and Later, Safety Application Instructions
No
No
98
Figure 22 - Input Fault Latch and Reset Flow Chart
Start
Does this safety function require operator
intervention after a safety input failure?
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)
Write logic to set inputs to safety state.
(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
Write logic to set safety state value when input is
faulted. (Example Rung 4)
Done
Rockwell Automation Publication 1756-RM093J-EN-P - April 2018
No
Make sure 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