jc_0201: Usable characters for subsystem names

Guideline Publication

Control Algorithm Modeling Guidelines - Using MATLAB®, Simulink®, and Stateflow®

Sub ID Recommendations

  • NA-MAAB — a, b, c, d, e, f

  • JMAAB — a, b, c, d, e, f

MATLAB Versions

All

Rule

Sub ID a

Only these character types shall be used in structural subsystem names:

  • Single-byte alphanumeric characters (a-z, A-Z, 0-9)

  • Single-byte underscore (_)

Line breaks, single-byte spaces, double-byte characters, and control characters shall not be used.

Custom Parameter

Not Applicable

Example — Incorrect

Single-byte spaces, double-byte, and symbol characters are used.

Sub ID b

A structural subsystem name shall not use numbers at the beginning.

Custom Parameter

Not Applicable

Example — Incorrect

Sub ID c

A structural subsystem name shall not use an underscore at the beginning.

Custom Parameter

Not Applicable

Example — Incorrect

Sub ID d

A structural subsystem name shall not use an underscore at the end.

Custom Parameter

Not Applicable

Example — Incorrect

Sub ID e

A structural subsystem name shall not use consecutive underscores.

Custom Parameter

Not Applicable

Example — Incorrect

Sub ID f

A structural subsystem shall not consist solely of a single reserved MATLAB word.

Custom Parameter

Not Applicable

Example — Incorrect

Rationale

Sub IDs a, b, f:

  • Cannot generate code using the configured structural subsystem name.

Sub IDs c, d, e:

  • May not be able to generate code using the configured structural subsystem name.

Note

The MATLAB limit for the number of characters you can use in subsystem names is 2048.

Verification

Model Advisor check: Check subsystem names (Simulink Check)

Last Changed

R2020a

Version History

Introduced in R2020a