1766-RM001A-EN-P MicroLogix 1400 Programmable Controllers ...

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228 Math InstructionsUse the LN instruction to take the natural log of the value in the sourceand store the result in the destination. The source must be greater thanzero.Enter the following parameters when programming this instruction:• Source is the address to compute the natural log.• Destination is the address to store the natural log of the Source.Address Levels for the operands involved in the LN can be ALL word, ALLdouble word, ALL float, or a combination. These operands shall undergoa conversion to float. The calculation of the source (in float) is thenperformed, and the result is then cast to the data type of Destination.LN Instruction Valid Addressing Modes and File TypesFor definitions of the terms used in this table see Using the Instruction Descriptions on page 92.Data Files Function Files (1)Address Mode (3)Address LevelParameterOISBT, C, RNFSTLMG, PDRI/RIXPLSRTCHSCPTOX, PWMXSTIEIIBHIMMILCDCS - CommsIOS - I/ODLS - Data Log (2)DirectIndirectImmediateInt16Immediate Int32Immediate FloatBitWordDouble WordElementFloatSource • • • • • • • • • • • • • •Destination • • • • • • • • • • • • •(1) PTOX and PWMX files are only for use with MicroLogix 1400 BXB or BXBA unit.(2) The Data Log Status file can only be used for the following math instructions: ADD, SUB, MUL, DIV, NEG, and SCP.(3) See Important note about indirect addressing.IMPORTANTYou cannot use indirect addressing with: S, MG, PD, RTC, HSC, PTOX,PWMX, STI, EII, BHI, MMI, CS, IOS, and DLS files.Instruction OperationWhen the rung is true, this instruction shall compute the natural logarithmof the Source and place the result in Destination.If the Destination is floating point, the result shall always be roundedusing the round to even rule.Publication 1766-RM001A-EN-P - October 2008
Math Instructions 229LN Instruction OperationInputs Conditions OutputSource Type Destination S:2/14S:0/3-0 S:5/0 DestinationTypeS, Z, V, CW,DW, F F X Source > 1 0,0,0,0 L Ln(Source)W,DW, F F X Source = 1 1,0,0,0 L 0W,DW, F F X 0 < Source < 1 1,0,0,0 L Ln(Source)W,DW, F W, DW X Source >= Sqrt(e) 0,0,0,0 L Rnd(Ln(Source))W,DW, F W, DW X 1/Sqrt(e) < Source < Sqrt(e) 1,0,0,0 L 0W,DW, F W, DW X 0 < Source
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MicroLogix 1400ProgrammableControll
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Summary of ChangesTo help you locat
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Table of ContentsSummary of Changes
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Table of Contents 7EQU - EqualNEQ -
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Table of Contents 9Chapter 18Input
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Table of Contents 11DLG - Data Log
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PrefaceRead this preface to familia
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Chapter 1I/O ConfigurationThis sect
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I/O Configuration 17MicroLogix 1400
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I/O Configuration 19WordBit Positio
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I/O Configuration 21Scaled-for-PID
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I/O Configuration 231762-OF4 Input
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26 I/O Configuration1762-IT4 Thermo
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28 I/O ConfigurationAddressing exam
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30 I/O ConfigurationInput filtering
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32 I/O ConfigurationConverting Anal
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34 I/O ConfigurationRising Edge Beh
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36 I/O ConfigurationIMPORTANTThe in
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38 I/O ConfigurationNotes:Publicati
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40 Controller Memory and File Types
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56 Function FilesOverviewFunction F
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58 Function FilesThe real-time cloc
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60 Function FilesMemory ModuleInfor
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62 Function FilesLE - Load on Error
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64 Function FilesGeneral Status Blo
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66 Function FilesDH-485 Diagnostic
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68 Function FilesDF1 Half-Duplex Sl
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70 Function FilesDF1 Radio Modem Di
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72 Function FilesModbus RTU Slave D
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74 Function FilesPublication 1766-R
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76 Function FilesDNP3 Slave Diagnos
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78 Function FilesActive Node Table
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80 Function FilesEthernetCommunicat
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82 Function FilesGeneral Channel St
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84 Function FilesGeneral Channel St
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86 Function FilesEthernet Diagnosti
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88 Function FilesEthernet Diagnosti
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90 Function FilesNotes:Publication
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92 Programming Instructions Overvie
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100 Using the High-Speed Counter an
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140 Using High-Speed Outputs• Acc
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142 Using High-Speed Outputsstructu
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144 Using High-Speed OutputsTIPIf t
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146 Using High-Speed OutputsTIPForc
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148 Using High-Speed Outputs• Set
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150 Using High-Speed Outputsinstruc
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152 Using High-Speed OutputsThe cho
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154 Using High-Speed OutputsThe PTO
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158 Using High-Speed OutputsPulse T
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160 Using High-Speed OutputsPulse W
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164 Using High-Speed OutputsPWMX En
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166 Using High-Speed OutputsPWMX Ac
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168 Relay-Type (Bit) InstructionsWh
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170 Relay-Type (Bit) InstructionsAd
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172 Relay-Type (Bit) InstructionsTI
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174 Relay-Type (Bit) InstructionsOS
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176 Timer and Counter InstructionsT
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Page 192 and 193: 190 Compare InstructionsUsing the C
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Page 200 and 201: 198 Math InstructionsAdvanced Math
Page 202 and 203: 200 Math InstructionsUpdates to Mat
Page 204 and 205: 202 Math InstructionsDefinitionsOve
Page 206 and 207: 204 Math InstructionsConsiderations
Page 208 and 209: 206 Math InstructionsNEG - NegateNE
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Page 218 and 219: 216 Math InstructionsTAN - TangentA
Page 220 and 221: 218 Math InstructionsThe Math Overf
Page 222 and 223: 220 Math InstructionsACS - Arc Cosi
Page 224 and 225: 222 Math InstructionsUse the ATN in
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Page 228 and 229: 226 Math InstructionsThe RAD instru
Page 232 and 233: 230 Math InstructionsUse the LOG in
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Page 248 and 249: 246 Conversion InstructionsMath Sta
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Page 258 and 259: 256 Logical InstructionsAddressing
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Page 264 and 265: 262 Move Instructions• Valid cons
Page 266 and 267: 264 Move InstructionsMVM - Masked M
Page 268 and 269: 266 Move InstructionsMath Status Bi
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Page 274 and 275: 272 File InstructionsTIPThe source
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278 File Instructions• Control -
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280 File Instructions• Destinatio
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282 File InstructionsLFL - Last In,
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284 File InstructionsLFU - Last In,
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286 File InstructionsSWP - SwapSWPS
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288 Sequencer InstructionsSQC- Sequ
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290 Sequencer Instructions.TIPIf ma
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292 Sequencer InstructionsThe bits
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294 Sequencer InstructionsSQO Instr
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296 Sequencer Instructions(1) See I
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298 Program Control InstructionsLBL
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300 Program Control InstructionsEND
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302 Program Control InstructionsNot
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304 Input and Output InstructionsTh
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306 Input and Output InstructionsAd
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308 Using InterruptsAn interrupt mu
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310 Using InterruptsThe priorities
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312 Using InterruptsUser InterruptI
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314 Using InterruptsIMPORTANTYou ca
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316 Using InterruptsTypes of Interr
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318 Using InterruptsUsing the Selec
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320 Using InterruptsSTI Error CodeE
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322 Using InterruptsSTI Error Detec
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324 Using InterruptsEII Function Fi
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326 Using InterruptsEII User Interr
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328 Using InterruptsNotes:Publicati
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330 Process Control Instructionerro
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332 Process Control InstructionPID
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334 Process Control InstructionSetp
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336 Process Control InstructionOutp
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338 Process Control InstructionCont
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340 Process Control InstructionCont
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342 Process Control InstructionTime
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344 Process Control InstructionAuto
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346 Process Control InstructionLoop
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348 Process Control InstructionEnab
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350 Process Control InstructionAnal
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352 Process Control InstructionInpu
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354 Process Control InstructionZero
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356 Process Control InstructionPID
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358 Process Control InstructionReco
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360 Process Control Instruction4. W
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362 ASCII InstructionsInstruction T
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364 ASCII InstructionsSee on page 6
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366 ASCII InstructionsControl Data
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368 ASCII InstructionsThis instruct
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370 ASCII InstructionsTIPYou config
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372 ASCII InstructionsWhen an error
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374 ASCII InstructionsExample[I:110
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376 ASCII InstructionsACB - Number
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378 ASCII InstructionsACI Instructi
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380 ASCII InstructionsThe AEX instr
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382 ASCII Instructions• Channel S
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384 ASCII Instructions(1) The Contr
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386 ASCII InstructionsTIPFor inform
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388 ASCII InstructionsASR Instructi
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390 ASCII InstructionsExamplesFor t
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392 ASCII InstructionsASCII Charact
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394 Communications Instructions•
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396 Communications InstructionsSVC
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398 Communications InstructionsThe
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400 Communications InstructionsMess
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404 Communications Instructions“C
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406 Communications InstructionsErro
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408 Communications Instructions2. A
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410 Communications InstructionsComm
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412 Communications Instructions0000
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414 Communications InstructionsExam
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416 Communications InstructionsComm
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418 Communications InstructionsData
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422 Communications InstructionsData
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426 Communications InstructionsPara
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428 Communications Instructionsinte
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434 Communications Instructions“T
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436 Communications InstructionsIn t
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442 Communications InstructionsConf
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444 Communications InstructionsLoca
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446 Communications InstructionsNetw
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448 Communications InstructionsSele
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452 Communications InstructionsNetw
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454 Communications InstructionsML14
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458 Communications Instructions2. A
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462 Communications Instructions“T
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464 Communications InstructionsServ
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466 Communications InstructionsMSG
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468 Communications InstructionsErro
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472 Communications InstructionsSMTP
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474 Communications InstructionsConf
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478 Communications InstructionsNote
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480 Socket Interface Using CIP Gene
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512 Recipe and Data LoggingThe RCP
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514 Recipe and Data Logging• Desc
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516 Recipe and Data LoggingApplicat
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518 Recipe and Data LoggingData Log
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520 Recipe and Data LoggingNumber o
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522 Recipe and Data LoggingExample
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524 Recipe and Data LoggingEnter th
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526 Recipe and Data LoggingData Log
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528 Recipe and Data LoggingTable 24
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530 Recipe and Data LoggingInformat
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532 Recipe and Data LoggingPublicat
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534 LCD - LCD InformationThe second
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536 LCD - LCD InformationLCD Functi
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538 LCD - LCD InformationLCD Displa
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540 LCD - LCD Informationafter down
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542 LCD - LCD InformationLCD contra
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544 LCD - LCD InformationDisplaying
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546 MicroLogix 1400 Memory Usage an
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552 System Status FileStatus File O
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554 System Status FileSign FlagAddr
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556 System Status FileFault Overrid
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558 System Status FileThe following
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560 System Status FileSTI EnabledAd
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562 System Status FileFree Running
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564 System Status FileMemory Module
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566 System Status FileSuspend CodeA
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568 System Status FileBaud RateAddr
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570 System Status FileOutgoing Mess
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572 System Status FileRTC Day of Mo
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574 System Status FileOS SeriesAddr
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576 System Status FileNotes:Publica
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578 Fault Messages and Error CodesM
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580 Fault Messages and Error CodesE
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586 Fault Messages and Error CodesN
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588 Protocol ConfigurationDH-485 Co
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590 Protocol ConfigurationNumber of
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592 Protocol ConfigurationDF1 Full-
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594 Protocol ConfigurationMessage-B
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596 Protocol Configurationstations
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598 Protocol ConfigurationStandard
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600 Protocol ConfigurationDF1 Half-
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602 Protocol ConfigurationMonitor A
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604 Protocol ConfigurationDF1 Half-
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606 Protocol ConfigurationDF1 Radio
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608 Protocol ConfigurationApplying
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610 Protocol ConfigurationDF1 Radio
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612 Protocol ConfigurationThe most
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614 Protocol ConfigurationModbus RT
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616 Protocol ConfigurationWhen the
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618 Protocol ConfigurationModbus Sl
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620 Protocol ConfigurationSupported
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622 Protocol ConfigurationModbus Er
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624 Protocol ConfigurationWhen the
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626 Protocol ConfigurationEthernet
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628 Protocol ConfigurationEthernet
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630 Knowledgebase Quick StartsEnter
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632 Knowledgebase Quick Starts# 174
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636 Knowledgebase Quick StartsPrope
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638 Knowledgebase Quick StartsProbl
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640 Knowledgebase Quick StartsMicro
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642 Knowledgebase Quick StartsNote:
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644 Knowledgebase Quick StartsNotes
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650 Knowledgebase Quick StartsFor e
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652 Knowledgebase Quick StartsIMPOR
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654 Knowledgebase Quick Starts5. Cl
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656 Knowledgebase Quick StartsEach
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658 Knowledgebase Quick StartsDISCO
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660 Knowledgebase Quick StartsPubli
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662 Number Systems1x2 14 = 163841x2
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664 Number Systems2x16 3 = 81921x16
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666 Number SystemsNotes:Publication
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668 Glossarycommunication scanA par
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670 Glossaryfull-duplexA mode of co
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672 GlossaryModbus RTU SlaveA half-
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674 GlossaryprocessorA Central Proc
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676 GlossarysourcingA term used to
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678 IndexDF1 radio modem parameters
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680 Indexfree running clock status
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682 Indexmodem 672modes 672monitori
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684 Indexscale instruction 208scale
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686 IndexPublication 1766-RM001A-EN
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Instruction ListInstruction- Descri
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PLEASE FASTEN HERE (DO NOT STAPLE)O
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