Logix5000 Controllers General Instructions - SLAC Confluence

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500 Special <strong>Instructions</strong> (FBC, DDT, DTR, PID)Operand Type Format DescriptionSetpointProcessvariableOutput %displays current value of the setpointdisplays current value of the scaled Process Variabledisplays current output percentage valuePID(PID,ProcessVariable,Tieback,ControlVariable,PIDMasterLoop,InholdBit,InHoldValue);Structured TextThe operands are the same as those for the relay ladderPID instruction. However, you specify the Setpoint, Process Variable,and Output % by accessing the .SP, .PV.and .OUT members of the PIDstructure, rather than by including values in the operand list.Publication 1756-RM003I-EN-P - January 2007
Special <strong>Instructions</strong> (FBC, DDT, DTR, PID) 501PID StructureMnemonic: Data Type Description.CTL DINT The .CTL member provides access to the status members (bits) in one, 32-bit word. The PIDinstruction sets bits 07 -15.This Bit Is This Member31 .EN30 .CT29 .CL28 .PVT27 .DOE26 .SWM25 .CA24 .MO23 .PE22 .NDF21 .NOBC20 .NOZCThis Bit: Is This Member, Which the PID Instruction Sets15 .INI14 .SPOR13 .OLL12 .OLH11 .EWD10 .DVNA09 .DVPA08 .PVLA07 .PVHA.SP REAL setpoint.KP REAL independent proportional gain (unitless)dependent controller gain (unitless).KI REAL independent integral gain (1/sec)dependent reset time (minutes per repeat).KD REAL independent derivative gain (seconds)dependent rate time (minutes).BIAS REAL feedforward or bias %.MAXS REAL maximum engineering unit scaling value.MINS REAL minimum engineering unit scaling valuePublication 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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Page 450 and 451: 450 Program Control Instructions (J
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550 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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