Logix5000 Controllers General Instructions - SLAC Confluence

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590 ASCII Serial Port <strong>Instructions</strong> (ABL, ACB, ACL, AHL, ARD, ARL, AWA, AWT)bar_code_read.LEN := 24;ARD(0,bag_bar_code,bar_code_read);END_IF;Publication 1756-RM003I-EN-P - January 2007
ASCII Serial Port <strong>Instructions</strong> (ABL, ACB, ACL, AHL, ARD, ARL, AWA, AWT) 591ASCII Read Line (ARL)Operands:The ARL instruction removes specified characters from the buffer andstores them in the Destination.Relay LadderARLASCII Read LineChannel ?Destination ???SerialPort Control ?SerialPort Control Length ?Characters Read ?ENDNEROperand Type Format Enter NotesChannel DINT immediate 0DestinationSerial PortControlSerial PortControl LengthstringSINTINTDINTSERIAL_PORT_CONTROLtagtagtagtag into which thecharacters are moved(read):• For a string data type,enter the name of thetag.• For a SINT, INT, or DINTarray, enter the firstelement of the array.tag that controls theoperationDINT immediate maximum number ofcharacters to read if notermination characters arefound• If you want to compare, convert, ormanipulate the characters, use a string datatype.• String data types are:• default STRING data type• any new string data type that you create• Enter the maximum number of charactersthat any message will contain (that is, whento stop reading if no termination charactersare found).For example, if messages range from 3 to 6characters in length, enter 6.• The Serial Port Control Length must be lessthan or equal to the size of the Destination.• If you want to set the Serial Port ControlLength equal to the size of the Destination,enter 0.Characters Read DINT immediate 0 During execution, displays the number ofcharacters that were read.Structured TextARL(Channel,Destination,SerialPortControl);The operands are the same as those for the relay ladderARL instruction. However, you specify the Serial Port Control Lengthand the Characters Read values by accessing the .LEN and .POSPublication 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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Page 636 and 637: 636 Common AttributesInstructions e
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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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