Logix5000 Controllers General Instructions - SLAC Confluence

86 Bit Instructions (XIC, XIO, OTE, OTL, OTU, ONS, OSR, OSF, OSRI, OSFI)One Shot Falling (OSF)The OSF instruction sets or clears the output bit depending on thestatus of the storage bit.This instruction is available in structured text and function block asOSFI, see page 3-92.Operands:Relay Ladder OperandsOperand Type Format Descriptionstorage bit BOOL tag internal storage bitstores the rung-condition-in from the lasttime the instruction was executedoutput bit BOOL tag bit to be setDescription:When disabled and the storage bit is set, the OSF instruction sets theoutput bit. When disabled and the storage bit is cleared, or whenenabled, the OSF instruction clears the output bit.rung condition instorage bitoutput bitinstruction isexecutedinstruction resets duringnext scan executionArithmetic Status Flags:Fault Conditions:not affectednonePublication 1756-RM003I-EN-P - January 2007