Maximum Size Limits of Simulink Models

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

Model Feature	Limit
Maximum number of levels in a block diagram	1024
Maximum number of branches in a line	1024
Maximum length of a parameter name	63
Maximum length of a parameter character vector value	32768
Maximum size of a model window, as determined by supported coordinates	-1073740824 to 1073740823, inclusive
Maximum number of bytes for a single logged data point	90 MB
Maximum number of bytes of logged simulation data	Limited by available hard drive space
Maximum number of bytes for an individual block I/O buffer length	2^31-1 bytes
Maximum number of bytes for an individual DWork buffer length	2^31-1 bytes
Maximum length of integer and fixed-point data types	65,535 bits
Maximum length of string data type	32,766 characters