Simulink Reference

Data Store Read

Read data from a data store

Library

Signal Routing

Description

The Data Store Read block copies data from the named data store to its output. The data is initialized by a Data Store Memory block and possibly written by a Data Store Write block.

The data store from which the data is read is determined by the location of the Data Store Memory block that defines the data store. For more information, see Data Store Memory.

More than one Data Store Read block can read from the same data store.

Note    Be careful when setting an execution priority on a Data Store Read block. Make sure that the block reads from the data store after the store is updated by any Data Store Write blocks that write to the store in the same time step.

Data Type Support

A Data Store Read block can output a real or complex signal of any data type supported by Simulink, as well as fixed-point data types.

For a discussion on the data types supported by Simulink, refer to Data Types Supported by Simulink in the Using Simulink documentation.

Parameters and Dialog Box

Data store name

Specify the name of the data store from which this block reads data.

Data store memory block

This field lists the Data Store Memory block that initialized the store from which this block reads.

Data store write blocks

This parameter lists all the Data Store Write blocks with the same data store name as this block that are in the same (sub)system or in any subsystem below it in the model hierarchy. Double-click any entry on this list to highlight the block and bring it to the foreground.

Sample time

The sample time, which controls when the block reads from the data store. A value of -1 indicates that the sample time is inherited. See Specifying Sample Time in the online documentation for more information.

Characteristics

Dimensionalized	Yes
Sample Time	Continuous or discrete

See Also

Data Store Memory, Data Store Write

Data Store Memory

Data Store Write