Simulink Getting Started Using Simulink Getting Started What Is Simulink? Tool for Simulation Tool for Model-Based Design Related Products Running a Demo Model Description of the Demo Some Things to Try What This Demo Illustrates Other Useful Demos Building a Model Setting Simulink Preferences Miscellaneous Preferences Font Preferences Simulation Preferences How Simulink Works Introduction Modeling Dynamic Systems Block Diagram Semantics Creating Models Time States Block Parameters Tunable Parameters Block Sample Times Custom Blocks Systems and Subsystems Signals Block Methods Model Methods Simulating Dynamic Systems Model Compilation Link Phase Simulation Loop Phase Solvers Zero-Crossing Detection Algebraic Loops Modeling and Simulating Discrete Systems Specifying Sample Time Purely Discrete Systems Multirate Systems Determining Step Size for Discrete Systems Sample Time Propagation Constant Sample Time Mixed Continuous and Discrete Systems Simulink Basics Starting Simulink Opening Models Opening Models with Different Character Encodings Avoiding Initial Model Open Delay Simulink Editor Editor Components Undoing a Command Zooming Block Diagrams Panning Block Diagrams Saving a Model Saving Models with Different Character Encodings Saving a Model in Earlier Formats Printing a Block Diagram Print Dialog Box Print Command Specifying Paper Size and Orientation Positioning and Sizing a Diagram Generating a Model Report Model Report Options Summary of Mouse and Keyboard Actions Manipulating Blocks Manipulating Lines Manipulating Signal Labels Manipulating Annotations Ending a Simulink Session Creating a Model Creating a New Model Selecting Objects Selecting One Object Selecting More Than One Object Specifying Block Diagram Colors Choosing a Custom Color Defining a Custom Color Specifying Colors Programmatically Displaying Sample Time Colors Connecting Blocks Automatically Connecting Blocks Manually Connecting Blocks Disconnecting Blocks Annotating Diagrams Using TeX Formatting Commands in Annotations Creating Annotations Programmatically Creating Subsystems Creating a Subsystem by Adding the Subsystem Block Creating a Subsystem by Grouping Existing Blocks Model Navigation Commands Window Reuse Labeling Subsystem Ports Controlling Access to Subsystems Creating Conditionally Executed Subsystems Enabled Subsystems Triggered Subsystems Triggered and Enabled Subsystems Conditional Execution Behavior Referencing Models Model Referencing Versus Subsystems Creating a Model Reference Opening a Referenced Model Parameterizing Model References Using Model Arguments Model Block Sample Times Referenced Model I/O Model Interfaces Building Simulation Targets Converting Subsystems to Model References Modeling with Control Flow Blocks Creating Conditional Control Flow Statements Comparing Stateflow and Control Flow Statements Using Callback Functions Tracing Callbacks Creating Model Callback Functions Creating Block Callback Functions Port Callback Parameters Working with Model Workspaces Changing Model Workspace Data Model Workspace Dialog Box Working with Data Stores Defining Data Stores Accessing Data Stores Data Store Examples The Model Advisor Launching the Model Advisor The Model Advisor Window Checking Code-Generation Targets Model Advisor Demo Models Managing Model Versions Specifying the Current User Model Properties Dialog Box Creating a Model Change History Version Control Properties Model Discretizer Requirements Discretizing a Model from the Model Discretizer GUI Viewing the Discretized Model Discretizing Blocks from the Simulink Model Discretizing a Model from the MATLAB Command Window Working with Blocks About Blocks Block Data Tips Virtual Blocks Editing Blocks Copying and Moving Blocks from One Window to Another Moving Blocks in a Model Copying Blocks in a Model Deleting Blocks Working with Block Parameters Working with Tunable Parameters Inlining Parameters Block Properties Dialog Box State Properties Dialog Box Changing a Block's Appearance Changing the Orientation of a Block Resizing a Block Displaying Parameters Beneath a Block Using Drop Shadows Manipulating Block Names Specifying a Block's Color Displaying Block Outputs Enabling Port Values Display Port Values Display Options Controlling and Displaying the Sorted Order How Simulink Determines the Sorted Order Displaying the Sorted Order Assigning Block Priorities Lookup Table Editor Browsing LUT Blocks Editing Table Values Displaying N-D Tables Plotting LUT Tables Editing Custom LUT Blocks Working with Block Libraries Terminology Simulink Block Library Creating a Library Modifying a Library Creating a Library Link Disabling Library Links Modifying a Linked Subsystem Propagating Link Modifications Updating a Linked Block Updating Links to Reflect Block Path Changes Breaking a Link to a Library Block Finding the Library Block for a Reference Block Library Link Status Displaying Library Links Getting Information About Library Blocks Browsing Block Libraries Accessing Block Data During Simulation About Block Runtime Objects Accessing a Runtime Object Listening for Method Execution Events Working with Signals Signal Basics About Signals Creating Signals Signal Labels Displaying Signal Values Signal Data Types Signal Dimensions Complex Signals Virtual Signals Control Signals Signal Buses Checking Signal Connections Signal Glossary Determining Output Signal Dimensions Signal and Parameter Dimension Rules Scalar Expansion of Inputs and Parameters The Signal & Scope Manager Generator and Viewer Types Generator and Viewer Objects Signals connected to Generator/Viewer The Signal Selector Port/Axis Selector Model Hierarchy Inputs/Signals List Logging Signals Enabling Signal Logging Specifying a Logging Name Limiting the Data Logged for a Signal Logging Referenced Model Signals Accessing Logged Signal Data Signal Properties Dialog Box Logging and Accessibility Options Real-Time Workshop Options Documentation Options Working with Test Points Designating a Signal as a Test Point Displaying Test Point Indicators Displaying Signal Properties Signal Names Signal Labels Displaying Signals Represented by Virtual Signals Working with Signal Groups Creating a Signal Group Set The Signal Builder Dialog Box Editing Signal Groups Editing Signals Editing Waveforms Signal Builder Time Range Exporting Signal Group Data Simulating with Signal Groups Simulation Options Dialog Box Bus Editor Bus types in base workspace Bus elements Bus name Header file Bus description Working with Data Working with Data Types Data Types Supported by Simulink Fixed-Point Data Fixed-Point Settings Interface Block Support for Data and Numeric Signal Types Specifying Block Parameter Data Types Creating Signals of a Specific Data Type Displaying Port Data Types Data Type Propagation Data Typing Rules Enabling Strict Boolean Type Checking Typecasting Signals Typecasting Parameters Working with Data Objects About Data Object Classes About Data Object Methods Constructors Using the Model Explorer to Create Data Objects About Object Properties Changing Object Properties Handle Versus Value Classes Saving and Loading Data Objects Using Data Objects in Simulink Models Creating Persistent Data Objects Subclassing Simulink Data Classes Associating User Data with Blocks Modeling with Simulink Modeling Equations Converting Celsius to Fahrenheit Modeling a Continuous System Avoiding Invalid Loops Tips for Building Models Exploring, Searching, and Browsing Models The Model Explorer Setting the Model Explorer's Font Size Model Hierarchy Pane Contents Pane Dialog Pane Main Toolbar Search Bar The Finder Filter Options Search Criteria The Model Browser Running Simulations Simulation Basics Controlling Execution of a Simulation Interacting with a Running Simulation Specifying a Simulation Start and Stop Time Choosing a Solver Choosing a Solver Type Choosing a Fixed-Step Solver Choosing a Variable-Step Solver Importing and Exporting Simulation Data Importing Input Data from the MATLAB Workspace Exporting Output Data to the MATLAB Workspace Importing and Exporting States Limiting Output Specifying Output Options Configuration Sets Configuration Set Components The Active Set Displaying Configuration Sets Activating a Configuration Set Copying, Deleting, and Moving Configuration Sets Copying Configuration Set Components Creating Configuration Sets Setting Values in Configuration Sets Configuration Set API The Model Configuration Dialog Box The Model Configuration Preferences Dialog Box The Configuration Parameters Dialog Box The Solver Pane Data Import/Export Pane The Optimization Pane The Diagnostics Pane Hardware Implementation Pane Model Referencing Pane Diagnosing Simulation Errors Simulation Diagnostics Viewer Creating Custom Simulation Error Messages Improving Simulation Performance and Accuracy Speeding Up the Simulation Improving Simulation Accuracy Running a Simulation Programmatically Using the sim Command Using the set_param Command Analyzing Simulation Results Viewing Output Trajectories Using the Scope Block Using Return Variables Using the To Workspace Block Linearizing Models Finding Steady-State Points Creating Masked Subsystems About Masks Mask Features Creating Masks Masked Subsystem Example Creating Mask Dialog Box Prompts Creating the Block Description and Help Text Creating the Block Icon Masking a Subsystem The Mask Editor The Icon Pane The Parameters Pane Control Types The Initialization Pane The Documentation Pane Linking Mask Parameters to Block Parameters Creating Dynamic Dialogs for Masked Blocks Setting Masked Block Dialog Parameters Predefined Masked Dialog Parameters Simulink Debugger Introduction Using the Debugger's Graphical User Interface Toolbar Breakpoints Pane Simulation Loop Pane Outputs Pane Sorted List Pane Status Pane Using the Debugger's Command-Line Interface Method ID Block ID Accessing the MATLAB Workspace Getting Online Help Starting the Debugger Starting a Simulation Running a Simulation Step by Step Stepping Commands Continuing a Simulation Running a Simulation Nonstop Debug Pointer Setting Breakpoints Setting Unconditional Breakpoints Setting Conditional Breakpoints Displaying Information About the Simulation Displaying Block I/O Displaying Algebraic Loop Information Displaying System States Displaying Integration Information Displaying Information About the Model Displaying a Model's Sorted Lists Displaying a Block Simulink Accelerator The Simulink Accelerator Accelerator Limitations How the Accelerator Works Running the Simulink Accelerator Handling Changes in Model Structure Increasing Performance of Accelerator Mode Blocks That Do Not Show Speed Improvements Using the Simulink Accelerator with the Simulink Debugger Interacting with the Simulink Accelerator Programmatically Comparing Performance Customizing the Simulink Accelerator Build Process Controlling S-Function Execution Profiler How the Profiler Works Enabling the Profiler The Simulation Profile Using the Embedded MATLAB Function Block Introduction to Embedded MATLAB Function Blocks What Is an Embedded MATLAB Function Block? Why Use Embedded MATLAB Function Blocks? Creating an Example Embedded MATLAB Function Adding an Embedded MATLAB Function Block to a Model Programming the Embedded MATLAB Function Checking the Function for Errors Defining Inputs and Outputs Debugging an Embedded MATLAB Function Debugging the Function in Simulation Watching Function Variables During Simulation The Embedded MATLAB Function Editor Changing the Embedded MATLAB Editor Editing the Embedded MATLAB Function Defining Embedded MATLAB Function Arguments Debugging Embedded MATLAB Functions Typing Function Arguments Inheriting Argument Data Types Selecting Types for Arguments Specifying Argument Types with Expressions Sizing Function Arguments Inheriting Argument Sizes from Simulink Specifying Argument Sizes with Expressions Parameter Arguments in Embedded MATLAB Functions Local Variables in Embedded MATLAB Functions Declaring Local Variables Implicitly Declaring Local Complex Variables Implicitly Functions in Embedded MATLAB Functions Calling Subfunctions in Embedded MATLAB Functions Calling Embedded MATLAB Run-Time Library Functions Calling MATLAB Functions Blocks -- Categorical List Blocks -- Alphabetical List Linearization and Trimming Commands Model Construction Commands Simulation Commands Mask Icon Drawing Commands Simulink Debugger Commands Data Type Functions Classes -- Alphabetical List Model and Block Parameters Model File Format Embedded MATLAB Function Block Reference Writing S-Functions Overview of S-Functions What Is an S-Function? Using S-Functions in Models Passing Parameters to S-Functions When to Use an S-Function How S-Functions Work Mathematics of Simulink Blocks Simulation Stages S-Function Callback Methods Implementing S-Functions M-File S-Functions MEX-File S-Functions S-Function Concepts Direct Feedthrough Dynamically Sized Arrays Setting Sample Times and Offsets S-Function Examples Writing S-Functions in M Introduction Writing Level-2 M-File S-Functions About Level-2 M-File S-Functions The Level-2 M-File S-Function API M-file S-Function Demos S-Function Template Instantiating a Level-2 M-File S-Function Generating Code from a Level-2 M-File S-Function Callback Methods Main Method Runtime Object Maintaining Level-1 M-File S-Functions S-Function Arguments S-Function Outputs Defining S-Function Block Characteristics Processing S-Function Parameters Writing S-Functions in C Introduction Creating C MEX S-Functions Building S-Functions Automatically Setting the Include Path S-Function Builder Dialog Box Parameters/S-Function Name Pane Port/Parameter Pane Initialization Pane Data Properties Pane Input Ports Pane Output Ports Pane Parameters Pane Data Type Attributes Pane Libraries Pane Outputs Pane Continuous Derivatives Pane Discrete Update Pane Build Info Pane Example of a Basic C MEX S-Function Defines and Includes Callback Implementations Simulink/Real-Time Workshop Interface Building the Timestwo Example Templates for C S-Functions S-Function Source File Requirements The SimStruct Compiling C S-Functions How Simulink Interacts with C S-Functions Process View Data View Writing Callback Methods Converting Level 1 C MEX S-Functions to Level 2 Obsolete Macros Creating C++ S-Functions Source File Format Making C++ Objects Persistent Building C++ S-Functions Creating Ada S-Functions Introduction Ada S-Function Source File Format Ada S-Function Specification Ada S-Function Body Writing Callback Methods in Ada Callbacks Invoked by Simulink Implementing Callbacks Omitting Optional Callback Methods SimStruct Functions Building an Ada S-Function Ada Compiler Requirements Example of an Ada S-Function Creating Fortran S-Functions Introduction Level 1 Versus Level 2 S-Functions Creating Level 1 Fortran S-Functions The Fortran MEX Template File Example Inline Code Generation Example Creating Level 2 Fortran S-Functions Template File C/Fortran Interfacing Tips Constructing the Gateway Example C-MEX S-Function Calling Fortran Code Porting Legacy Code Find the States Sample Times Multiple Instances Use Flints If Needed Considerations for Real Time Implementing Block Features Dialog Parameters Tunable Parameters Run-Time Parameters Creating Run-Time Parameters Updating Run-Time Parameters Tuning Runtime Parameters Creating Input and Output Ports Creating Input Ports Creating Output Ports Scalar Expansion of Inputs Masked Multiport S-Functions Custom Data Types Sample Times Block-Based Sample Times Specifying Port-Based Sample Times Hybrid Block-Based and Port-Based Sample Times Multirate S-Function Blocks Synchronizing Multirate S-Function Blocks Specifying Model Reference Sample Time Inheritance Work Vectors Work Vectors and Zero Crossings Example Involving a Pointer Work Vector Memory Allocation Function-Call Subsystems Processing Frame-Based Signals Handling Errors Exception Free Code ssSetErrorStatus Termination Criteria Checking Array Bounds S-Function Examples Example of a Continuous State S-Function Example of a Discrete State S-Function Example of a Hybrid System S-Function Example of a Variable-Step S-Function Example of a Zero Crossing S-Function Example of a Time-Varying Continuous Transfer Function S-Function Callback Methods mdlCheckParameters mdlDerivatives mdlDisable mdlEnable mdlGetTimeOfNextVarHit mdlInitializeConditions mdlInitializeSampleTimes mdlInitializeSizes mdlOutputs mdlProcessParameters mdlRTW mdlSetDefaultPortComplexSignals mdlSetDefaultPortDataTypes mdlSetDefaultPortDimensionInfo mdlSetInputPortComplexSignal mdlSetInputPortDataType mdlSetInputPortDimensionInfo mdlSetInputPortFrameData mdlSetInputPortSampleTime mdlSetInputPortWidth mdlSetOutputPortComplexSignal mdlSetOutputPortDataType mdlSetOutputPortDimensionInfo mdlSetOutputPortSampleTime mdlSetOutputPortWidth mdlSetWorkWidths mdlSimStatusChange mdlStart mdlTerminate mdlUpdate mdlZeroCrossings SimStruct Functions Introduction Language Support The SimStruct SimStruct Macros and Functions Listed by Usage Miscellaneous Error Handling and Status I/O Port Dialog Box Parameters Run-Time Parameters Sample Time State and Work Vector Simulation Information Function Call Data Type Real-Time Workshop Function Reference FssCallExternalModeFcn ssCallSystemWithTid ssDisableSystemWithTid ssEnableSystemWithTid ssGetAbsTol ssGetBlockReduction ssGetContStateAddress ssGetContStates ssGetDataTypeId ssGetDataTypeName ssGetDataTypeSize ssGetDataTypeZero ssGetDiscStates ssGetDTypeIdFromMxArray ssGetDWork ssGetDWorkComplexSignal ssGetDWorkDataType ssGetDWorkName ssGetDWorkRTWIdentifier ssGetDWorkRTWStorageClass ssGetDWorkRTWTypeQualifier ssGetDWorkUsedAsDState ssGetDWorkWidth ssGetdX ssGetErrorStatus ssGetExplicitFCSSCtrl ssGetInlineParameters ssGetInputPortBufferDstPort ssGetInputPortComplexSignal ssGetInputPortConnected ssGetInputPortDataType ssGetInputPortDimensions ssGetInputPortDirectFeedThrough ssGetInputPortFrameData ssGetInputPortNumDimensions ssGetInputPortOffsetTime ssGetInputPortOptimOpts ssGetInputPortOverWritable ssGetInputPortRealSignal ssGetInputPortRealSignalPtrs ssGetInputPortRequiredContiguous ssGetInputPortSampleTime ssGetInputPortSampleTimeIndex ssGetInputPortSignal ssGetInputPortSignalAddress ssGetInputPortSignalPtrs ssGetInputPortWidth ssGetIWork ssGetIWorkValue ssGetModelName ssGetModeVector ssGetModeVectorValue ssGetNonsampledZCs ssGetNumContStates ssGetNumDataTypes ssGetNumDiscStates ssGetNumDWork ssGetNumInputPorts ssGetNumIWork ssGetNumModes ssGetNumNonsampledZCs ssGetNumOutputPorts ssGetNumParameters ssGetNumRunTimeParams ssGetNumPWork ssGetNumRWork ssGetNumSampleTimes ssGetNumSFcnParams ssGetOffsetTime ssGetOutputPortBeingMerged ssGetOutputPortComplexSignal ssGetOutputPortConnected ssGetOutputPortDataType ssGetOutputPortDimensions ssGetOutputPortFrameData ssGetOutputPortNumDimensions ssGetOutputPortOffsetTime ssGetOutputPortOptimOpts ssGetOutputPortRealSignal ssGetOutputPortSampleTime ssGetOutputPortSignal ssGetOutputPortSignalAddress ssGetOutputPortWidth ssGetParentSS ssGetPath ssGetPlacementGroup ssGetPortBasedSampleTimeBlockIsTriggered ssGetPWork ssGetPWorkValue ssGetRealDiscStates ssGetRootSS ssGetRunTimeParamInfo ssGetRWork ssGetRWorkValue ssGetSampleTime ssGetSampleTimeOffset ssGetSampleTimePeriod ssGetSFcnParam ssGetSFcnParamsCount ssGetSimMode ssGetSolverMode ssGetSolverName ssGetStateAbsTol ssGetStopRequested ssGetT ssGetTaskTime ssGetTFinal ssGetTNext ssGetTStart ssGetUserData ssIsContinuousTask ssIsFirstInitCond ssIsMajorTimeStep ssIsMinorTimeStep ssIsSampleHit ssIsSpecialSampleHit ssIsVariableStepSolver ssPrintf ssRegDlgParamAsRunTimeParam ssRegAllTunableParamsAsRunTimeParams ssRegisterDataType ssSampleAndOffsetAreTriggered ssSetBlockReduction ssSetCallSystemOutput ssSetDataTypeSize ssSetDataTypeZero ssSetDWorkComplexSignal ssSetDWorkDataType ssSetDWorkName ssSetDWorkRTWIdentifier ssSetDWorkRTWStorageClass ssSetDWorkRTWTypeQualifier ssSetDWorkUsedAsDState ssSetDWorkWidth ssSetErrorStatus ssSetExplicitFCSSCtrl ssSetExternalModeFcn ssSetInputPortComplexSignal ssSetInputPortDataType ssSetInputPortDimensionInfo ssSetInputPortDirectFeedThrough ssSetInputPortFrameData ssSetInputPortMatrixDimensions ssSetInputPortOffsetTime ssSetInputPortOptimOpts ssSetInputPortOverWritable ssSetInputPortRequiredContiguous ssSetInputPortSampleTime ssSetInputPortVectorDimension ssSetInputPortWidth ssSetIWorkValue ssSetModelReferenceSampleTimeInheritanceRule ssSetModeVectorValue ssSetNumContStates ssSetNumDiscStates ssSetNumDWork ssSetNumInputPorts ssSetNumIWork ssSetNumModes ssSetNumNonsampledZCs ssSetNumOutputPorts ssSetNumPWork ssSetNumRunTimeParams ssSetNumRWork ssSetNumSampleTimes ssSetNumSFcnParams ssSetOffsetTime ssSetOneBasedIndexInputPort ssSetOneBasedIndexOutputPort ssSetOptions ssSetOutputPortComplexSignal ssSetOutputPortDataType ssSetOutputPortDimensionInfo ssSetOutputPortFrameData ssSetOutputPortMatrixDimensions ssSetOutputPortOffsetTime ssSetOutputPortOptimOpts ssSetOutputPortOverwritesInputPort ssSetOutputPortSampleTime ssSetOutputPortVectorDimension ssSetOutputPortWidth ssSetParameterName ssSetParameterTunable ssSetPlacementGroup ssSetPWorkValue ssSetRWorkValue ssSetRunTimeParamInfo ssSetSampleTime ssSetSFcnParamNotTunable ssSetSFcnParamTunable ssSetSolverNeedsReset ssSetStopRequested ssSetTNext ssSetUserData ssSetVectorMode ssSetZeroBasedIndexInputPort ssSetZeroBasedIndexOutputPort ssUpdateAllTunableParamsAsRunTimeParams ssUpdateRunTimeParamData ssUpdateDlgParamAsRunTimeParam ssUpdateRunTimeParamInfo ssWarning ssWriteRTW2dMatParam ssWriteRTWMx2dMatParam ssWriteRTWMxVectParam ssWriteRTWParameters ssWriteRTWParamSettings ssWriteRTWScalarParam ssWriteRTWStr ssWriteRTWStrParam ssWriteRTWStrVectParam ssWriteRTWVectParam ssWriteRTWWorkVect Release Notes Simulink 6.2 Release Notes New Features Model Referencing Limitations Referencing and Referenced Model Limitations Referencing Model Limitations Referenced Model Limitations Major Bug Fixes Known Software and Documentation Problems Upgrading from a Previous Release Simulink 6.1 Release Notes Changes from the Previous Release Changed Source Dialog Box Behavior Changed Model Explorer Source Behavior Affected Blocks Upgrading from a Previous Release Model Load Warnings Major Bug Fixes Wrong Discrete-Time Integrator Reset Behavior Known Software and Documentation Problems Some Bus Features May Not Work With Mux Buses Misleading Bus Sample Time Mismatch Error Issue with SHIFT_JIS Characters on Non-Japanese Systems Cannot Drag Multiple Objects From Search Panel Function-Call Subsystem Enabling Issue Model API Can Return an Incorrect Initial State Vector Turn the New Wrap Lines Option Off Model Referencing Problems Embedded MATLAB Function Block Block Positions Limited to Less Than 32768 Cannot Modify Instantiated Class Blocksets Menu Sometimes Fails to Appear PostSaveFcn Cannot Find Model on First Save Saturation Block's Output Differs on Different Platforms Limitation on Discretizing Models in the S Domain Simulink 6.0 Release Notes New Features Model Explorer Configuration Sets Model Referencing Model Workspaces Implicit Fixed-Step Solver The Signal and Scope Manager Data Object Type Enhancements Block Enhancements Signal Enhancements Rate Transition Enhancements Execution Context Enhancements Algebraic Loop Minimization Level-2 M-File S-Functions Panning Model Diagrams Model Referencing Limitations Referencing and Referenced Model Limitations Referencing Model Limitations Referenced Model Limitations Major Bug Fixes Upgrading from an Earlier Release Changes in MATLAB Data Type Conversions Signal Object Resolution Changes Loading Models Containing Non-ASCII Characters Change in Sample Time Behavior of Unary Minus Block Initial Output of Conditionally Executed Subsystems Execution Context Default Changes Known Software and Documentation Problems Turn the New Wrap Lines Option Off Model Referencing Problems Embedded MATLAB Function Block Block Positions Limited to Less Than 32768 Cannot Modify Instantiated Class Blocksets Menu Sometimes Fails to Appear PostSaveFcn Cannot Find Model on First Save Saturation Block's Output Differs on Different Platforms Limitation on Discretizing Models in the S Domain Finder, Debugger Help Buttons Broken Changing a Subsystem Port Number Can Corrupt a Model Simulink 5.1 Release Notes New Features Sample Time Parameters Exposed Enhanced Debugger Context-Sensitive Data Typing of Tunable Parameters Conditional Execution Behavior Function-Call Subsystem Enhancements External Increment Option Added To For Iterator Block Performance Improvements Major Bug Fixes Upgrading from an Earlier Release Known Software and Documentation Problems Changing a Subsystem Port Number Can Corrupt a Model Model File Names Limited to 1280 Characters Compiling Ada S-Functions with GNAT Ada Compiler Specifying Include Directories for Building Ada S-Functions Deadzone Block Result Differs in Code Generation Simulink 5.0.1 Release Notes Major Bug Fixes Upgrading from an Earlier Release Backwards Compatibility of Tunable Parameters for Unified Fixed-Point Blocks Simulink 5.0 Release Notes New Features Block Enhancements Simulation Enhancements Modeling Enhancements Major Bug Fixes Platform Limitations for HP and IBM Upgrading from an Earlier Release BlockInstanceData Function Deprecated Simulink 4.1 Release Notes New Features Simulink Editor Modeling Enhancements Simulink Debugger Block Library Bug Fixes Upgrading from an Earlier Release Running Simulink 4.1 Models in Simulink 4.0 Simulink Block Library Reorganization Direct Feedthrough Compensation Deprecated S-Functions Sorted Like Built-In Blocks Added Latched Triggered Subsystems Self-Triggering Subsystems Are No Longer Allowed Improved Invalid Model Configuration Diagnostics Simulink 4.0 Release Notes New Features Simulink Editor Modeling Enhancements Simulink Debugger Block Library SB2SL Upgrading from an Earlier Release Port Name Property Printable Documentation (PDF) Product Page (Web)