Logix5000 Controllers General Instructions - SLAC Confluence

76 Bit Instructions (XIC, XIO, OTE, OTL, OTU, ONS, OSR, OSF, OSRI, OSFI)Output Latch (OTL)The OTL instruction sets (latches) the data bit.Operands:Relay LadderOperand Type Format Descriptiondata bit BOOL tag bit to be setStructured TextStructured text does not have an OTL instruction, but you can achievethe same results using an IF...THEN construct and an assignment.IF BOOL_expression THENdata_bit := 1;END_IF;See Appendix B for information on the syntax of constructs,expressions, and assignments within structured text.Description:Arithmetic Status Flags:Fault Conditions:When enabled, the OTL instruction sets the data bit. The data bitremains set until it is cleared, typically by an OTU instruction. Whendisabled, the OTL instruction does not change the status of thedata bit.not affectednoneExecution:Conditionprescanrung-condition-in is falserung-condition-in is truepostscanRelay Ladder ActionThe data bit is not modified.The rung-condition-out is set to false.The data bit is not modified.The rung-condition-out is set to false.The data bit is set.The rung-condition-out is set to true.The data bit is not modified.The rung-condition-out is set to false.Publication 1756-RM003I-EN-P - January 2007