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Schneider Electric SR2MAN01 LD Language, At a Glance, Subject of this Section Whats in this Part?

Models: SR2MAN01

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LD Language

III

At a Glance

Subject of this Section

What's in this Part?

This section describes the use of LD (Ladder Diagram) programming language for the smart relay.

This part contains the following chapters:

Chapter	Chapter Name	Page

16	LD Language Elements	87

SR2MAN01 11/2007

Page 73

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Schneider Electric SR2MAN01 LD Language, At a Glance, Subject of this Section Whats in this Part?, Chapter Name, Page

Contents

SR2MAN01 11/2007 Zelio Logic Smart Relay User ManualPart I Initial Power up and Discovering Table of ContentsPart II Functions Accessible from the Front Panel Chapter 1 Initial Power up and DiscoveringChapter 13 DEFAULT Menu Chapter 8 CONFIGURATION MenuPart III LD Language Chapter 9 CLEAR PROGRAM MenuChapter 21 Diagnostics Part V DiagnosticsPart IV Creating and Debugging an Application AppendicesImportant Information Safety InformationDANGER 2007 Schneider Electric. All Rights Reserved Safety InformationSR2MAN01 11/2007 At a Glance About the BookPresentation Initial Power up and DiscoveringInitial Power up and Discovering Subject of thisPresentation Initial Power up and DiscoveringSubject of this Chapter Whats in this Chapter? TopicPreliminary Advice SafetyRISK OF ELECTRIC SHOCK, EXPLOSION OR ELECTRIC ARCING DANGERRISK OF EXPLOSION RISK OF ELECTRIC SHOCK OR FIRERISK OF UNEXPECTED OPERATION INVOLUNTARY OPERATION OF EQUIPMENTIntroduction Description of the Smart Relay Front Panel Presentation of the Smart Relay Front PanelMenu / OK Description of the LCDPrompt ElementInitial Power up and Discovering Characteristics and ConnectionsRECOMMENDED POSSIBLEDescription Control Keys on the Front Panel of the Smart RelayMenu / OK Shift KeyZx Keys z Round for a link only in programming modeare marked above the keys The navigation keys are used to move left or right, down or upMenus Contextualcontextual menu appears IllustrationIntroduction Language Selection ExamplesMenu / OK Step ActionMenu / OK Menu / OKStep Action View5 Return to the INPUT-OUTPUT screen using the left navigation key Initial Power up and DiscoveringStep Action ViewMenu / OK Modification of Date and HourMenu / OK Step ActionStep Action Menu / OKView V E R S I O N L A N G U A G E D E F A U L T C H A N G E D / HAt a Glance Functions Accessible from the Front PanelSubject of this Section Whats in this Part? ChapterFunctions Accessible from the Front Panel of the Smart Relay Accessible from the Front PanelOverview of the Functions DescriptionDifferences Between LD and FBD Modes ConfiguringExtensions At a Glance Input/Output ScreenSubject of this Chapter Whats in this Chapter? TopicDescription Inputs-Outputs ScreenMenu / OK Main Menu Access to thepreset value, etc. on the LCD display instead of the INPUTS-OUTPUTS TEXT and DISPLAY screenSwitching Between the Screens DescriptionStep Menu / OKPress the Shift key white key to display the contextual menu Result Param is displayed at the bottom of the screenPresentation PROGRAMMING MenuSubject of this Chapter Menu / OKChapter? Whats in thisPROGRAMMING Menu TopicI1-H1-C1-M1- T2- CC1 I2 Z1 Z3 Rules for Entering Ladder DiagramsDescription Incorrect RulesCorrect Description Entering an Element Method for Entering a Contact or CoilMenu / OK Modifying an element Initialization Deleting an Element Note Accessible only in LD mode / smart relay in STOP mode Entering a LinkDescription Entering a Link Menu / OKDeleting a Link Replacing a Link with a Contact Description Accessibility of parameters Entry of Function Block Parametersins. - + Param Del Entering Parameters on Creation of the BlockMenu / OK Modifying the Parameters of Existing BlocksNote Accessible only in LD mode / smart relay in STOP mode Deletion and Insertion of Diagram Linesdeletion of all the control diagram lines DeletionPARAMETERS Menu PARAMETERS MenuLD mode DescriptionRUN Mode FBD mode Parameter ModificationParameters in z From the PARAMETERS see PARAMETERS Menu, p. 51 menuMONITORING Menu MONITORING MenuDescription To modify the parameters, proceed as follows Parameter ModificationStep Action RUN/STOP Menu RUN/STOP MenuR U N P R O G W I T H L A T C H I N G I N I TP R O G S T O PY E S Off Smart Relays Without ScreenNote The CONFIGURATION menu is only available in STOP mode CONFIGURATION MenuPresentation Subject of this Chapter Whats in this Chapter?P A S S W O R D PASSWORD MenuE N T E R 0 0 0The ENTER message appears in the window Entry procedure Entering PasswordPassword Initially, the key is not displayed and each digit is set toIllustration PasswordMenu / OK IllustrationDescription Filter-Type Selection FILTER Menu1 2 3 4 5 Zx KEYS MenuS T O P L D M O N 2 2 S E P 1 5 5Description WATCHDOG CYCLE MenuIllustration C Y C L E = 0 5 x 0 2 m SThe WATCHDOG can perform the following different actions Actions Cycle Time WATCHDOG ConfigurationC Y C L E = 0 5 x 0 2 m S CLEAR PROG Menu CLEAR PROGRAM MenuNote Accessible only in LD mode Description Clearing the ProgramTRANSFER Menu TRANSFER MenuDescription IllustrationTRANSFER Menu Module → Backup Memory TransferBackup Memory → Module Transfer z Configurations of the hardware and program to transfer incompatible z Absence of backup memoryApplication incompatibleUse of SR2 MEM01 and SR2 MEM02 VERSION Menu VERSION MenuDescription IllustrationX T 1 4 1 B D E X TH A R D W A R E 0 1 . 0 F I R M W A R E 0 1 . 0LANGUAGE Menu LANGUAGE MenuE N G L I S H F R A N C A I SFAULT Menu DEFAULT MenuReset to Zero of the Fault Counter DescriptionNumber Type of fault 000 No faults 001 Fault in writing to EEPROM Fault Types002 Clock write fault 053 Link fault between smart relay and bus-type extensionNumber Type of fault CHANGE DATE/TIME Menu CHANGE DATE/TIME MenuDescription IllustrationExample Clock ConfigurationSteps Description CHANGE SUMMER/WINTER Menu CHANGE SUMMER/WINTER MenuC H A N G E S U M / W I N E U R O P ETo configure automatic time change, proceed as follows Configuration of the Time ChangeStep Action At a Glance LD LanguageSubject of this Section Whats in this Part? ChapterAt a Glance LD Language ElementsSubject of this Chapter Whats in this Chapter? TopicLadder Diagrams IntroductionDiagram DescriptionNormally open mode Discrete InputsNormally closed mode Descriptionthe state of a Modification ofcontact InitializationNormally open mode Zx KeysNormally closed mode Descriptionthe State of a Modification ofContact InitializationDescription Auxiliary RelaysImpulse relay mode Contactor modeLatch mode Unlatch modeSymbol of an auxiliary relay, used as a contact in normally open mode Normally open modeNormally closed mode Example Modifying the Mode of a Coil or a ContactInitialization Latching Contactor mode Discrete DISCR OutputsImpulse relay mode DescriptionUnlatch mode Latch modeNormally closed mode Normally open modeModifying the Mode of a Coil or a Contact InitializationDescription Timersz Coil RC Reset Input z Coil TT Command InputCommand input Reset inputNormally closed mode Normally open modeType of timer Time unit Preset valueM S H MM S LatchingA = 0 0 2 0 B = 0 0 4 Menu / OKActive, control held down type A Off delay type CActive, Press to start/stop type a The following diagram shows the operation of the type B timer The following diagram shows the operation of the type A/C timerThe following diagram shows the operation of the type W timer A/C Combination of A and CFlasher unit, control held down synchronously type D Note each pulse on the TTx input resets the current timer value toFlasher unit, Press to start/stop, Synchronous type d Flasher unit, control held down asynchronously type LFlasher unit, Press to start/stop asynchronously type l Modifying the Mode of a Coil or a ContactTime on addition type T InitializationThe stairway light is linked to the Q4 output of the smart relay ExampleM S 0 2 3z Coil RC Reset Initial Counter State Input CountersDescription Use of CoilsZ1 RC1 Reset Initial Counter State inputCounting direction input I2 DC1Symbol of the normally open contact associated with a counter Normally open modeNormally closed mode The contact is conducting as long asType of counting Preset valueParameter lock T T O LatchingP = 0 0 1 7 Menu / OKvalue Modifying the Mode of a Coil or a ContactCurrent counter Current counter valuez The current value is zero InitializationExamples The counter is incremented each time input I1 is activatedDescription Fast Counterz coil RK1 Reset initial counter state input z coil TK1 Enable function inputEnable function input Reset initial counter state inputNormally closed mode Normally open modeThe contact is conducting as long as z Repetitive In the TO mode, the current value is reinitialized when it reaches the preset value and in FROM mode, it is reset to the preset value when it reaches zero Preset valueCycle type Duration of pulseParameter lock Type of countingNon verrouillé Latching counter reset to its initial stateI = 0 0 0 0 P = + 0 0 0 1Up-Counting in Single Cycle Mode Up-counting in Repetitive Cycle Mode Down-Counting in Single Cycle Modetiming Time £ timingConfirmation Down-Counting in Repetitive Cycle ModeInitialization Modifying the Mode of a Coil or a Contactz The current value is zero ExampleNormally open mode Counter ComparatorsNormally closed mode ConfigurationNormally open mode Analog ComparatorsNormally closed mode Descriptionxl Comparison Operator Configuration from Front Panelx1 - H ≤ x2≤ x1 + H Values to compareHysteresis parameter Reference valueParameter locking Configuration of a single comparator from the front panel Initialization Modifying the Mode of a Coil or a ContactExample A N A L O GNormally open mode ClocksThe contact is conducting when the clock is in a validity period Normally closed modeH 1 D / W Configuration from Front Panel0 2 5 H M O NModifying the Mode of a Coil or a Contact Example Using the four clock ranges with different modesCombining Programming modes can be mixed for the same clockLD Language Elements Description TextsDisplay Activation z Display Activation coil z Display Deactivation coilDisplay deactivation Description LCD Screen BacklightingUsed as a Coil Access Change to Summer / Winter TimeNormally open mode Normally closed modeParameters Modifying the Mode of a Coil or a Contact InitializationThe following operating modes are possible No no changeDescription Modbus Inputs/OutputsParameters to masterCommand input MessageDescription Use of the CoilNormally closed mode Normally open modeModifying the Mode of a Coil or a Contact Configuration from the Front Panel InitializationPresentation Creating and Debugging an ApplicationSubject of this Section Whats in this Part? ChapterPresentation Implementing a Basic ApplicationSubject of this Chapter Whats in this Chapter? TopicNormal electrical diagram Presentation of Ladder DiagramsLadder diagram DescriptionI1 I2 can be used in place of two position switchesI4 I5 I6 I7 Outputsinput I wired on the smart relay Using the Reverse FunctionDescription To illustrate how this function works, we shall use a simple exampleLadder diagram 1 Light off when idle Electrical diagramPractical Example I2 I3 I4 I5 I6 I7Electrical diagram Off delayElectrical diagram Implementing a Basic Applicationz Electrical symbols z Ladder symbols z Smart relay symbols Notation Used by the Smart RelayElectrical symbol Ladder symbolz LCD screen back-light function block This is used to control the backlighting of the LCD by a program Description Go to the Programming Screen Application Implementing a Two-way SwitchMenu / OK Menu / OKStep Action Entering the Contacts in the First LineComment Step Action Implementing a Basic ApplicationScreen The 2 flashesStep Action Entering the Coil and Joining it to the ContactsScreen CommentStep Action Entering the Contacts in the Second LineScreen CommentI1-i2----------Q1 Joining the Second Line to the Firsti1-I Implementing a Basic ApplicationMenu / OK Launching the ProgramMenu / OK Menu / OKPresentation Debugging an ApplicationSubject of this Chapter Whats in this Chapter? TopicIntroduction Module in RUN Mode Viewing StatusMenu / OK Debugging an ApplicationContextual in RUN modeMenus Menu / OKViewing Ladder Diagrams Dynamic Mode Ladder DiagramsChanging Ladder Diagrams Menu / OK Using Z Keys as PushbuttonsDebugging an Application SR2MAN01 11/2007Accessing Dynamic Mode Function Block ParametersPresentation ModifyingDynamic Mode Dynamic Mode MenusMenus not. Here is a summary tableDescription Smart Relay Reaction to a Power FailureLatching Safety Mode Saving and Transferring Ladder Diagrams Backup and Transfer of Ladder Diagrams19Description Transferring anPresentation Sample ApplicationSubject of this Chapter Whats in this Chapter? TopicObjective SpecificationsAutomatic Gate Counting Vehicles Open TimeDescription Specification AnalysisInputs ButtonSmart relay label Special function blocksName Description Implementing the Ladder Diagram Implementing the SolutionFunction Blocks Configuring theblocks I b ≥ R A 1 s A N A L O GR = 8 x 1 = I b = 0This chapter will help you find solutions to operating problems DiagnosticsDiagnostics PresentationPresentation DiagnosticsSubject of this Chapter Whats in this Chapter? TopicDescription Smart Relay MessagesMessage CauseDiagnostics Frequently Asked QuestionsDescription questions are listed hereFrequently Here below are the most frequently asked questions and their answersAsked Questions AnswerAt a Glance AppendicesIntroduction Whats in thisAt a Glance CompatibilitySubject of this ChapterCompatibility IntroductionSmart relay firmware version Version of theProgram from compatibility is always true the SR2 MEM02 IntroductionMemory Cartridge to the Smart Relay Index Modbus LD I/Os Menu CHANGE DATE/TIME CHANGE SUMMER/WINTER, 83 CLEAR PROGZx Keys SR2MAN01 11/2007