Allen-Bradley 1756-L61S

100 Rockwell Automation Publication 1756-RM093J-EN-P - April 2018
Appendix F RSLogix 5000 Software, Version 14 and Later, Safety Application Instructions
Figure 24 - Ladder Logic Example 2
0
/
/
/
Node30:I.InputStatus
L
Node30InputsFaulted
/
Node31:I.CombinedStatus
L
Node31InputsFaulted
1
FaultReset
ONS
InputFaultResetOneShot
Node30:I.InputStatus
U
Node30InputsFaulted
Node31:I.CombinedStatus
U
Node31InputsFaulted
2
Node30InputsFaulted
Node30:I.Pt00Data
Node30Input00
Node30Input01
Node30Input07
Node30:I.Pt01Data
Node30:I.Pt07Data
3
Node31InputsFaulted
4
Node30InputsFaulted
L
Node31Input01
L
Node31Input03
Node31:I.Pt00Data
Node31Input00
Node31Input01
Node31Input11
Node31:I.Pt01Data
Node31:I.Pt11Data
Node 30 is an 8-point input/8-point output combination module.
Node 31 is a 12-point input module.
If the input status is not OK, then latch the inputs faulted indication.
If the raising edge of the fault reset signal is detected and the input status is OK, then unlatch the inputs faulted indication.
If the inputs are not faulted, then write the input tag values to the internal representations of the inputs.
If the inputs are not faulted, then write the input tag values to the internal representations of the inputs.
If the inputs faulted indication is true, then set the internal representations of the Diverse inputs to their safety state (1).