System-generated identifiers

Specify whether to use shorter names for the $N token in system-generated identifiers

Model Configuration Pane: Code Generation / Identifiers

Description

Specify whether the code generator uses shorter, more consistent names for the $N token in system-generated identifiers.

Dependencies

This parameter:

Appears only for ERT-based targets.
Requires Embedded Coder^® when generating code.

Settings

Shortened (default) | Classic

Classic

Generate longer identifier names for the $N token. For example, for a model named sym, if:

Global variables is $N$R$M, the block state identifier is DWork_sym.
Global types is $R$N$M, the block state type is a structure named sym_D_Work.

Shortened

Shorten identifier names for the $N token to allow more space for user names. This option provides a more predictable and consistent naming system that uses camel case, no underscores or plurals, and consistent abbreviations for both a type and a variable. For example, for a model named sym, if:

Global variables is $N$R$M, the block state identifier is DW_sym.
Global types is $R$N$M, the block state type is a structure named sym_DW.

System-generated identifiers per model

Classic	Shortened	Data Representation	Description
`BlockIO, B`	`B`	Type, Global Variable	Block signals of the system
`ExternalInputs`	`ExtU`	Type	Block input data for root system
`ExternalInputSizes`	`ExtUSize`	Type	Size of block input data for the root system (used when inputs are variable dimensions)
`ExternalOutputs`	`ExtY`	Type	Block output data for the root system
`ExternalOutputSizes`	`ExtYSize`	Type	Size of block output data for the root system
`U`	`U`	Global Variable	Input data
`USize`	`USize`	Global Variable	Size of input data
`Y`	`Y`	Global Variable	Output data
`YSize`	`YSize`	Global Variable	Size of output data
`Parameters`	`P`	Type, Global Variable	Parameters for the system
`ConstBlockIO`	`ConstB`	`Const` Type, Global Variable	Block inputs and outputs that are constants
`MachineLocalData, Machine`	`MachLocal`	`Const` Type, Global Variable	Used by ERT S-function targets
`ConstParam, ConstP`	`ConstP`	`Const` Type, Global Variable	Constant parameters in the system
`ConstParamWithInit, ConstWithInitP`	`ConstInitP`	`Const` Type, Global Variable	Initialization data for constant parameters in the system
`D_Work`, `DWork`	`DW`	Type, Global Variable	Block states in the system
`MassMatrixGlobal`	`MassMatrix`	Type, Global Variable	Used for physical modeling blocks
`PrevZCSigStates, PrevZCSigState`	`PrevZCX`	Type, Global Variable	Previous zero-crossing signal state
`ContinuousStates, X`	`X`	Type, Global Variable	Continuous states
`StateDisabled, Xdis`	`XDis`	Type, Global Variable	Status of an enabled subsystem
`StateDerivatives, Xdot`	`XDot`	Type, Global Variable	Derivatives of continuous states at each time step
`ZCSignalValues, ZCSignalValue`	`ZCV`	Type, Global Variable	Zero-crossing signals
`DefaultParameters`	`DefaultP`	Global Variable	Default parameters in the system
`GlobalTID`	`GlobalTID`	Global Variable	Used for sample time for states in referenced models
`InvariantSignals`	`Invariant`	Global Variable	Invariant signals
`NSTAGES`	`NSTAGES`	Global Variable	Solver macro
`Object`	`Obj`	Global Variable	Used by ERT C++ code generation to refer to referenced model objects
`TimingBridge`	`TimingBrdg`	Global Variable	Timing information stored in different data structures
`SharedDSM`	`SharedDSM`	Type, Global Variable	Shared local data stores, which are Data Store Memory blocks with Share across model instances selected
`InstP`	`InstP`	Type, Global Variable	Parameter arguments for the system

System-generated identifier names per referenced model or reusable subsystem

Classic	Shortened	Data Representation	Description
`rtB`, `B`	`B`	Type, Global Variable	Block signals of the system
`rtC`, `C`	`ConstB`	Type, Global Variable	Block inputs and outputs that are constants
`rtDW`, `DW`	`DW`	Type, Global Variable	Block states in the system
`rtMdlrefDWork, MdlrefDWork`	`MdlRefDW`	Type, Global Variable	Block states in referenced model
`rtP, P`	`P`	Type, Global Variable	Parameters for the system
`rtRTM, RTM`	`RTM`	Type, Global Variable	RT_Model structure
`rtX, X`	`X`	Type, Global Variable	Continuous states in model reference
`rtXdis, Xdis`	`XDis`	Type, Global Variable	Status of an enabled subsystem
`rtXdot, Xdot`	`XDot`	Type, Global Variable	Derivatives of the S-function's continuous states at each time step
`rtZCE, ZCE`	`ZCE`	Type, Global Variable	Zero-crossing enabled
`rtZCSV, ZCSV`	`ZCV`	Type, Global Variable	Zero-crossing signal values
`rtSharedDSM, SharedDSM`	`SharedDSM`	Type, Global Variable	Shared local data stores, which are Data Store Memory blocks with Share across model instances selected
`rtInstP, InstP`	`InstP`	Type, Global Variable	Parameter arguments for the system

Note

When you set the System-generated identifiers parameter to Shortened, while generating an identifier for a global variable of a referenced model which is a run-time parameter, the code generator adds a prefix rtP_ to the variable name for the $N token.

Recommended Settings

Application	Setting
Debugging	No impact
Traceability	No impact
Efficiency	No impact
Safety precaution	No impact

Programmatic Use

Parameter: InternalIdentifier

Type: character vector

Value: Classic | Shortened

Default: Shortened

Version History

Introduced in R2013a