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Maximum Size Limits of Simulink Models

The following table documents some limits on the size and complexity of Simulink® models.

Model FeatureLimit
Maximum number of levels in a block diagram1024
Maximum number of branches in a line1024
Maximum length of a parameter name63
Maximum length of a parameter character vector value32768
Maximum size of a model window, as determined by supported coordinates-1073740824 to 1073740823, inclusive
Maximum number of bytes of logged simulation data2^31-1 bytes on 32-bit systems, 2^48-1 bytes on 64-bit systems
Maximum number of bytes for the total block I/O buffer length in a model2^31-1 bytes on 32-bit systems and on 64-bit systems
Maximum length of integer and fixed-point data types 128 bits
Maximum length of string data type32,766 characters