Allen-Bradley Logix5000 Reference Manual page 509

Fault Conditions:
Condition
Prescan
Rung-condition-in is false
Rung-condition-in is true
masked source =
reference
rung-condition-out is set
to false
Postscan
None
Execution:
Relay Ladder Action
The Reference = Source AND Mask.
The rung-condition-out is set to false.
The Reference = Source AND Mask.
The rung-condition-out is set to false.
no
yes
The rung-condition-out is set to false.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Special Instructions (FBC, DDT, DTR, PID)
reference is set equal to masked source
rung-condition-out is set to true
end
Chapter 13
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