Logix5000 Controllers General Instructions - SLAC Confluence

530 Trigonometric Instructions (SIN, COS, TAN, ASN, ASIN, ACS, ACOS, ATN, ATAN)FBD_MATH_ADVANCED StructureInput Parameter Data Type DescriptionEnableIn BOOL Enable input. If cleared, the instruction does not execute and outputs are not updated.Default is set.Source REAL Input to the math instruction.Valid = any floatOutput Parameter Data Type DescriptionEnableOut BOOL The instruction produced a valid result.Dest REAL Result of the math instruction. Arithmetic status flags are set for this output.Description:Arithmetic Status Flags:Fault Conditions:The Source must be greater than or equal to -102943.7(-2πx2 14 ) andless than or equal to 102943.7 (2πx2 14 ).Arithmetic status flags are affected.noneExecution:Relay LadderConditionprescanrung-condition-in is falserung-condition-in is trueActionThe rung-condition-out is set to false.The rung-condition-out is set to false.The controller calculates the tangent of the Source and places the result inthe Destination.The rung-condition-out is set to true.postscanThe rung-condition-out is set to false.Function BlockConditionprescaninstruction first scaninstruction first runEnableIn is clearedEnableIn is setActionNo action taken.No action taken.No action taken.EnableOut is cleared.The instruction executes.EnableOut is set.postscanNo action taken.Publication 1756-RM003I-EN-P - January 2007