Logix5000 Controllers General Instructions - SLAC Confluence

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468 Program Control <strong>Instructions</strong> (JMP, LBL, JSR, RET, SBR, JXR, TND, MCR, UID, UIE, AFI, NOP, EOT, SFP, SFR, EVENT)Example 1:A controller uses multiple programs but a common shut downprocedure. Each program uses a program-scoped tag namedShut_Down_Line that turns on if the program detects a condition thatrequires a shut down. The logic in each program executes as follows:If Shut_Down_Line = on (conditions require a shut down) thenExecute the Shut_Down task one timeRelay LadderProgram AProgram BStructured TextProgram AIF Shut_Down_Line AND NOT Shut_Down_Line_One_Shot THENEVENT (Shut_Down);END_IF;Shut_Down_Line_One_Shot := Shut_Down_Line;Program BIF Shut_Down_Line AND NOT Shut_Down_Line_One_Shot THENEVENT (Shut_Down);END_IF;Shut_Down_Line_One_Shot := Shut_Down_Line;Publication 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) 469Example 2:The following example uses an EVENT instruction to initialize anevent task. (Another type of event normally triggers the event task.)Continuous taskIf Initialize_Task_1 = 1 thenThe ONS instruction limits the execution of the EVENT instruction to one scan.The EVENT instruction triggers an execution of Task_1 (event task).Task_1 (event task)The GSV instruction sets Task_Status (DINT tag) = Status attribute for the event task. In the Instance Nameattribute, THIS means the TASK object for the task that the instruction is in (that is, Task_1).If Task_Status.0 = 1 then an EVENT instruction triggered the event task (that is, when the continuous task executesits EVENT instruction to initialize the event task).The RES instruction resets a counter that the event task uses.The controller does not clear the bits of the Status attribute once they are set. To use a bit for new statusinformation, you must manually clear the bit.If Task_Status.0 = 1 then clear that bit.The OTU instruction sets Task_Status.0 = 0.The SSV instruction sets the Status attribute of THIS task (Task_1) = Task_Status. This includes the cleared bit.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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518 Special Instructions (FBC, DDT,
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520 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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