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Variant Terminology

金宝app^®variant terminology helps you to understand various parameters and terms.

Variant Terminology	Description
Variant Subsystem, Variant Model	Contains one or more choices where each choice is aSubsystemorModelblock.
Variant Source	Provides variation on the source of a signal.
Variant Sink	Provides variation on the sink (destination) of a signal.
Variant Model	Variant Subsystemblock containingModelblock as variant choices. SeeVariant Subsystem, Variant Model.
Active choice	Variant choice associated with a variant control that evaluates to`true`.
Variant control mode	`expression`,`label`or`sim codegen switching`for modeling variant blocks and variant parameters.
Variant control variable	MATLAB^®variable,`Simulink.Variant`object, or a`Simulink.Parameter`object. SeeTypes of Variant Control Variables (Operands) in Variant Blocks.
Variant object	Container of variant control expression. See`Simulink.Variant`.
Variant Manager	Central tool that allows you to manage various variation points that are modeled using variant blocks in a system model.
Variant Reducer	Reduces variant models to simplified, standalone model depending on the selected variant configurations.
Variant Configuration, Variant Configuration data object	A variant configuration consists of a named set of variant control variables, their values, and configurations to be used by referenced models. It can be used to activate a variation of a Simulink model. A variant configuration data object (instance of the`Simulink.VariantConfigurationData`class) associated with a model stores: Collection of all variant configurations for the model. 的反对straints that must be satisfied by the model for all variant configurations. Default configuration for the model. You can create new variant configurations and group them into a variant configuration data object from Variant Manager or programmatically using the`Simulink.VariantConfigurationData`class. To associate the variant configuration data object to a model, use the Export variant configuration data object functionality in Variant Manager, or use the`VariantConfigurationObject`parameter. Example: variantConfig = Simulink.VariantConfigurationData; set_param(model,'VariantConfigurationObject',...'variantConfig');

Command Line Parameters

Variant Subsystem Parameters

Parameter name	Description
`Variant`	Used to check if the subsystem is aVariant Subsystemblock. Returns`on`if the subsystem is aVariant Subsystemblock, else it returns`off`. Example:`get_param(gcb, 'Variant')` This is a read-only parameter.
`VariantChoices`	Gets the list of variant choices in aVariant Subsystemblock. Example:`get_param(gcb, 'VariantChoices');` Returns a 1-by-Nstruct array with fields: `Name:`Name of the variant control `BlockName:`Block path name This is a read-only parameter.
`VariantControl`	Subsystemblock andModelblock parameter, which applies to a choice block of aVariant Subsystemblock and returns the variant control for the choice block. `get_param`behavior: Returns variant controls for choice block of a Variant Subsystem block. Example:`get_param(gcb, 'VariantControl')` `set_param`behavior: Sets variant control for current block. Example:`set_param(gcb, 'VariantControl', 'A==1')`
`VariantControlMode`	Specifies the mode for modeling Variant blocks, which can be either`expression`or`label`or`sim codegen switching`. `get_param`behavior: 块返回模式集建模变体。Example:`get_param(gcb, 'VariantControlMode')` `set_param`behavior: Sets the mode for modeling Variant blocks. Example:`set_param(gcb, 'VariantControlMode', 'Label')` SeeVariant control mode.
`LabelModeActiveChoice`	Returns the variant control label of the selected choice for theVariant Subsystemblock when`VariantControlMode`is specified as`label`. If`VariantControlMode`is specified as`expression`, this parameter returns empty`('')`. `get_param`behavior: Returns the variant control label of the selected choice for the Variant Subsystem when`VariantControlMode`is set to`label`. If`VariantControlMode`is set to`expression`, this parameter returns empty`('')`. `set_param`behavior: When`VariantControlMode`is specified as`expression`,`set_param`makes the label selected as the active choice. When`VariantControlMode`is`label`,`set_param`switches between specified labels. SeeLabel mode active choice.
`TreatAsGroupedWhenPropagatingVariantConditions`	Returns`on`if theSubsystemis treated as a group when propagating variant conditions else returns`off`. `get_param`behavior: Indicates if the subsystem is treated as a group when propagating Variant conditions or not by returning`on`or`off`. Example:`get_param(gcb, 'TreatAsGroupedWhenPropagatingVariantConditions')` `set_param`behavior: Enables or disables treating subsystem as a group when propagating variant conditions. Example:`set_param(gcb, 'TreatAsGroupedWhenPropagatingVariantConditions', 'on')` SeePropagate Variant Conditions from Variant Source Blocks to Subsystem Blocks.
`GeneratePreprocessorConditionals`	Indicates if all the choices are to be analyzed and preprocessor conditionals to be generated by returning`on`or`off`. `get_param`behavior: Indicates if all the choices are to be analyzed and preprocessor conditionals be generated by returning`on`or`off`. Example:`get_param(gcb, 'GeneratePreprocessorConditionals')` `set_param`behavior: Enables or disables analyzing all the choices and generating preprocessor conditionals. Example:`set_param(gcb, 'GeneratePreprocessorConditionals', 'on')` Note Use theVariant activation timeparameter instead.
`CompiledActiveChoiceControl`	Returns the variant control corresponding to the active choice of theVariant Subsystemblock and returns empty`(' ')`when no choice is active. When the block is commented or is inside a commented subsystem, this parameter returns empty`(' ')`. Example:`get_param(gcb, 'CompiledActiveChoiceControl')`. This is a read-only parameter.
`CompiledActiveChoiceBlock`	Returns the full block path name of the activeVariant Subsystemblock choice and returns empty`(' ')`when no choice is active. When the block is commented or is inside a commented Subsystem, the value is returned as empty`(' ')`. Example:`get_param(gcb, 'CompiledActiveChoiceBlock')`. This is a read-only parameter.
`CompiledVariantInfo`	Block parameter that indicates the variant activeness of a block模型编译后. Returns a structure with three fields, with values set to`on`or`off`: `IsActive`: Value is`on`if the block is active in simulation. `IsInCodegen`: Value is`on`if the block is part of generated code. `IsInStartup`: Value is`on`if the block is active or can become active in simulation (the propagated value ofVariant activation timeon the block is`startup`) after model compilation. For an example, seeIdentify Variant Activeness of a Block After Model Compilation. This is a read-only parameter.
`PropagateVariantConditions`	Indicates if conditions on ports inside theVariant Subsystemblock are to be propagated outside the block. `get_param`behavior: Indicates if conditions on ports inside theVariant Subsystemblock are to be propagated outside the block. `set_param`behavior: Enables or disables propagating conditions outsideVariant Subsystemblock. Example:`set_param(gcb, 'PropagateVariantConditions','on')` SeePropagate conditions outside of variant subsystem.
`AllowZeroVariantControls`	Indicates if theVariant Subsystemblock is allowed to have no active choices. `get_param`behavior: Indicates if theVariant Subsystemblock is allowed to have no active choices. `set_param`behavior: Enables or disables having active choices inVariant Subsystemblock. Example:`set_param(gcb, 'AllowZeroVariantControls','on')` SeeAllow zero active variant controls.
`VariantActivationTime`	Determines if Simulink sets the active choice of aVariant Subsystemblock during update diagram or code compile. `get_param`behavior: Returns the`Variant Activation Time`of aVariant Subsystemblock. This parameter can be set to`update diagram`,`update diagram analyze all choices`, or`code compile`. Example:`get_param(gcb, 'VariantActivationTime')` `set_param`behavior: When you set theVariant control modeto`expression`, this parameter can be set to`update diagram`,`update diagram analyze all choices`, or`code compile`. When you set theVariant control modeto`sim codegen switching`, this parameter can be set to either`update diagram`or`update diagram analyze all choices`. The`code compile`option becomes unavailable. Example:`set_param(gcb,'VariantActivationTime', 'update diagram')` Note The`get_param`and`set_param`behavior of`VariantActivationTime`parameter with the`code compile`option is equivalent to that of the parameter`GeneratePreprocessorConditionals`. SeeVariant activation time.

Variant Source and Variant Sink Parameters

Parameter name	Description
`VariantControls`	Returns a`1-by-N`cell array of variant control expressions corresponding to each of the`N`ports of theVariant SourceorVariant Sinkblocks. `get_param`behavior: Returns a cell array of variant control expressions corresponding to each ports of theVariant SourceorVariant Sinkblocks. Example:`get_param(gcb, 'VariantControls')` `set_param`behavior: Sets the cell array of Variant control expressions corresponding to each of ports ofVariant SourceorVariant Sinkblocks. Example:`set_param(gcb, 'VariantControls', ('{A==1}, '4'))`
`VariantControlMode`	Specifies the mode for modeling variant blocks, which can be either`Expression`or`Label`. `get_param`behavior: 块返回模式集建模变体。Example:`get_param(gcb, 'VariantControlMode')` `set_param`behavior: Sets the mode for modeling Variant blocks. Example:`set_param(gcb, 'VariantControlMode', 'Label')` SeeVariant control mode.
`LabelModeActiveChoice`	Returns the variant control label of the selected choice forVariant SourceorVariant Sinkblock when`VariantControlMode`is specified as`Label`. If`VariantControlMode`is specified as`Expression`, this parameter returns empty`('')`. `get_param`behavior: Returns the variant control label of the selected choice for the Variant Subsystem when`VariantControlMode`is set to`Label`. If`VariantControlMode`is set to`Expression`, this parameter returns empty`('')`. `set_param`behavior: When`VariantControlMode`is specified as`Expression`,`set_param`makes the label selected as the active choice. When`VariantControlMode`is`Label`,`set_param`switches between specified labels. SeeLabel mode active choice.
`GeneratePreprocessorConditionals`	Indicates if all the choices are to be analyzed and preprocessor conditionals to be generated by returning`on`or`off`. `get_param`behavior: Indicates if all the choices are to be analyzed and preprocessor conditionals to be generated by returning`on`or`off`. Example:`get_param(gcb, 'GeneratePreprocessorConditionals')` `set_param`behavior: Enables or disables analyzing all the choices and generating preprocessor conditionals. Example:`set_param(gcb, 'GeneratePreprocessorConditionals', 'on')` Note Use theVariant activation timeparameter instead.
`ShowConditionOnBlock`	Indicates if the`VariantControlExpression`is to be displayed on the block by returning`on`or`off`. `get_param`behavior: Indicates if the`VariantControlExpression`is to be displayed on the block or not. `set_param`behavior: Enables or disables the displaying of`VariantControlExpression`on the block. Example:`set_param(gcb, 'ShowConditionOnBlock','on')` SeeShow variant condition on block.
`AllowZeroVariantControls`	Indicates if the block is allowed to have no active ports by returning`on`or`off`. `get_param`behavior: Indicates if theVariant SourceorVariant Sinkblock is allowed to have no active choices. `set_param`behavior: Enables or disables having active choices inVariant SourceorVariant Sinkblock. Example:`set_param(gcb, 'AllowZeroVariantControls','on')` SeeAllow zero active variant controls.
`CompiledActiveVariantControl`	Returns the variant control corresponding to the active port from the last compilation instance. If no port is active, returns empty`(' ')`. If the block is commented or inside a commentedSubsystemor inside an inactive choice of aVariant Subsystemblock, the value is not computed and returns empty`(' ')`. Example:`get_param(gcb, 'CompiledActiveVariantControl')` This is a read-only parameter.
`CompiledActiveVariantPort`	Returns the "index" of the active port from the last compilation instance or returns`-1`when no port is active. If the block is commented or inside a commentedSubsystemor inside an inactive choice of aVariant Subsystemblock (with generate preprocessor conditionals Off), the value is not computed, and returns empty`(' ')`. Example:`get_param(gcb, 'CompiledActiveVariantPort')` This is a read-only parameter.

Related Examples

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Variant System Design