Logix5000 Controllers General Instructions - SLAC Confluence

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466 Program Control <strong>Instructions</strong> (JMP, LBL, JSR, RET, SBR, JXR, TND, MCR, UID, UIE, AFI, NOP, EOT, SFP, SFR, EVENT)Trigger Event Task (EVENT)The EVENT instruction triggers one execution of an event task.Operands:Relay LadderOperand Type Format DescriptionTask TASK name event task to executeThe instruction lets you choose other types oftasks, but it does not execute them.EVENT(task_name);Structured TextThe operands are the same as those for the relay ladderEVENT instruction.Description:Use the EVENT instruction to programmatically execute an event task:• Each time the instruction executes, it triggers the specified eventtask.• Make sure that you give the event task enough time to completeits execution before you trigger it again. If not, an overlapoccurs.• If you execute an EVENT instruction while the event task isalready executing, the controller increments the overlap counterbut it does not trigger the event task.Programmatically Determine if an EVENT Instruction Triggered aTaskTo determine if an EVENT instruction triggered an event task, use aGet System Value (GSV) instruction to monitor the Status attribute ofthe task.Status Attribute of the TASK ObjectAttribute Data Type Instruction DescriptionStatus DINT GSVSSVProvides status information about the task. Once the controller sets a bit, youmust manually clear the bit to determine if another fault of that type occurred.To determine if:Examine this bit:An EVENT instruction triggered the task (event task 0only).A timeout triggered the task (event task only). 1An overlap occurred for this task. 2Publication 1756-RM003I-EN-P - January 2007
Program Control <strong>Instructions</strong> (JMP, LBL, JSR, RET, SBR, JXR, TND, MCR, UID, UIE, AFI, NOP, EOT, SFP, SFR, EVENT) 467The controller does not clear the bits of the Status attribute once theyare set.• To use a bit for new status information, you must manually clearthe bit.• Use a Set System Value (SSV) instruction to set the attribute to adifferent value.Arithmetic Status Flags:Fault Conditions:not affectednoneExecution:Condition: Relay Ladder Action Structured Text Actionprescan The rung-condition-out is set to false. No action taken.rung-condition-in is false The rung-condition-out is set to false. narung-condition-in is true The instruction executes. naThe rung-condition-out is set to true.EnableIn is set na EnableIn is always set.The instruction executes.instruction execution The instruction triggers one execution of the specified event taskpostscan The rung-condition-out is set to false. No action taken.Publication 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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516 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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620 ASCII Conversion Instructions (
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636 Common AttributesInstructions e
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638 Common AttributesIf you use a S
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640 Common AttributesREAL to an int
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642 Function Block AttributesUse th
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644 Function Block AttributesOrder
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646 Function Block AttributesDo not
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648 Function Block AttributesCreate
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650 Function Block AttributesTiming
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652 Function Block AttributesCommon
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654 Function Block AttributesOvervi
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656 Function Block AttributesThe Pr
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658 Function Block AttributesProgra
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660 Structured Text ProgrammingTerm
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662 Structured Text ProgrammingThe
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664 Structured Text ProgrammingIn s
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666 Structured Text ProgrammingFor
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668 Structured Text ProgrammingUse
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670 Structured Text ProgrammingInst
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672 Structured Text ProgrammingIF..
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674 Structured Text ProgrammingExam
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676 Structured Text Programmingopti
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678 Structured Text ProgrammingFOR
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682 Structured Text ProgrammingThe
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684 Structured Text ProgrammingREPE
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688 Structured Text ProgrammingFor
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IndexAABL instruction 575ABS instru
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Index 693DEG 556FRD 565introduction
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Index 695sequencer 421serial port 5
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Index 697program/operator controlov
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Index 699timer on delay with reset
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Pub. Title/Type Logix5000 Controlle
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Rockwell AutomationSupportRockwell
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