Logix5000 Controllers General Instructions - SLAC Confluence

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664 Structured Text ProgrammingIn structured text, you use two types of expressions:BOOL expression: An expression that produces either the BOOLvalue of 1 (true) or 0 (false).• A bool expression uses bool tags, relational operators, andlogical operators to compare values or check if conditions aretrue or false. For example, tag1>65.• A simple bool expression can be a single BOOL tag.• Typically, you use bool expressions to condition the executionof other logic.Numeric expression: An expression that calculates an integer orfloating-point value.• A numeric expression uses arithmetic operators, arithmeticfunctions, and bitwise operators. For example, tag1+5.• Often, you nest a numeric expression within a bool expression.For example, (tag1+5)>65.Use the following table to choose operators for your expressions:If You Want ToThenCalculate an arithmetic value “Use arithmetic operators and functions“on page 665.Compare two values or strings “Use relational operators“on page 666.Check if conditions are true or false “Use logical operators“on page 668.Compare the bits within values “Use bitwise operators“on page 669.Publication 1756-RM003I-EN-P - January 2007
Structured Text Programming 665Use arithmetic operators and functionsYou can combine multiple operators and functions in arithmeticexpressions.Arithmetic operators calculate new values.To Use This Operator Optimal Data Typeadd + DINT, REALsubtract/negate - DINT, REALmultiply * DINT, REALexponent (x to the power of y) ** DINT, REALdivide / DINT, REALmodulo-divide MOD DINT, REALArithmetic functions perform math operations. Specify a constant, anon-boolean tag, or an expression for the function.For Use This Function Optimal Data Typeabsolute value ABS (numeric_expression) DINT, REALarc cosine ACOS (numeric_expression) REALarc sine ASIN (numeric_expression) REALarc tangent ATAN (numeric_expression) REALcosine COS (numeric_expression) REALradians to degrees DEG (numeric_expression) DINT, REALnatural log LN (numeric_expression) REALlog base 10 LOG (numeric_expression) REALdegrees to radians RAD (numeric_expression) DINT, REALsine SIN (numeric_expression) REALsquare root SQRT (numeric_expression) DINT, REALtangent TAN (numeric_expression) REALtruncate TRUNC (numeric_expression) DINT, REALPublication 1756-RM003I-EN-P - January 2007
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Logix5000Controllers GeneralInstruc
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Table of ContentsSummary of Changes
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Table of Contents 7Extended Error C
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Table of Contents 9Array (File)/Mis
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Table of Contents 11Set the deadban
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14 Table of ContentsPublication 175
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16 Summary of ChangesNotes:Publicat
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18 PrefacePurpose of This ManualThi
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20 PrefaceRelay ladder rung conditi
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22 PrefaceNotes:Publication 1756-RM
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24 Instruction LocatorInstruction:
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30 Instruction LocatorPublication 1
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32 Digital Alarm Instruction (ALMD)
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48 Analog Alarm Instruction (ALMA)A
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50 Analog Alarm Instruction (ALMA)S
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52 Analog Alarm Instruction (ALMA)I
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54 Analog Alarm Instruction (ALMA)I
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56 Analog Alarm Instruction (ALMA)O
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62 Analog Alarm Instruction (ALMA)E
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64 Analog Alarm Instruction (ALMA)E
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70 Bit Instructions (XIC, XIO, OTE,
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96 Timer and Counter Instructions (
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98 Timer and Counter Instructions (
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100 Timer and Counter Instructions
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140 Input/Output Instructions (MSG,
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206 Compare Instructions (CMP, EQU,
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248 Compute/Math Instructions (CPT,
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284 Move/Logical Instructions (MOV,
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332 Array (File)/Misc. Instructions
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388 Array (File)/Shift Instructions
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422 Sequencer Instructions (SQI, SQ
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436 Program Control Instructions (J
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472 For/Break Instructions (FOR, FO
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480 Special Instructions (FBC, DDT,
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522 Trigonometric Instructions (SIN
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546 Advanced Math Instructions (LN,
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556 Math Conversion Instructions (D
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572 ASCII Serial Port Instructions
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606 ASCII String Instructions (CONC
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Page 636 and 637: 636 Common AttributesInstructions e
Page 638 and 639: 638 Common AttributesIf you use a S
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Page 660 and 661: 660 Structured Text ProgrammingTerm
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Page 668 and 669: 668 Structured Text ProgrammingUse
Page 670 and 671: 670 Structured Text ProgrammingInst
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Page 691 and 692: IndexAABL instruction 575ABS instru
Page 693 and 694: Index 693DEG 556FRD 565introduction
Page 695 and 696: Index 695sequencer 421serial port 5
Page 697 and 698: Index 697program/operator controlov
Page 699 and 700: Index 699timer on delay with reset
Page 701 and 702: Pub. Title/Type Logix5000 Controlle
Page 705: Rockwell AutomationSupportRockwell
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