Rockwell Automation Publication 1756-RM003N-EN-P - October 2011 103
Bit Instructions (XIC, XIO, OTE, OTL, OTU, ONS, OSR, OSF, OSRI, OSFI) Chapter 2
Execution:
Condition Relay Ladder Action
Prescan The storage bit is set to prevent an invalid trigger during the first scan.
The rung-condition-out is set to false.
Rung-condition-in is false The storage bit is cleared.
The rung-condition-out is set to false.
Postscan The storage bit is cleared.
The rung-condition-out is set to false.
Rung-condition-in is true
End
Examine
storage bit.
Storage Bit = 0
storage bit = 1
Storage bit is set.
Rung-condition-out
is set to true.
Storage bit remains set.
Rung-condition-out is set to
false.
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