12.07.2015 Views

Logix5000 Controllers General Instructions - SLAC Confluence

Logix5000 Controllers General Instructions - SLAC Confluence

Logix5000 Controllers General Instructions - SLAC Confluence

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Program Control <strong>Instructions</strong> (JMP, LBL, JSR, RET, SBR, JXR, TND, MCR, UID, UIE, AFI, NOP, EOT, SFP, SFR, EVENT) 459No Operation (NOP)The NOP instruction functions as a placeholderOperands:Relay LaddernoneDescription:Arithmetic Status Flags:Fault Conditions:You can place the NOP instruction anywhere on a rung. Whenenabled the NOP instruction performs no operation. When disabled,the NOP instruction performs no operation.not affectednoneExecution:Conditionprescanrung-condition-in is falserung-condition-in is truepostscanRelay Ladder ActionThe rung-condition-out is set to false.The rung-condition-out is set to false.The rung-condition-out is set to true.The rung-condition-out is set to false.ExampleThis instruction is useful for locating unconditional branches whenyou place the NOP instruction on the branch.The NOP instruction bypasses the XIC instruction to enablethe output.Publication 1756-RM003I-EN-P - January 2007

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!