Learn more about Stateflow

Debugging Data Range Violations in a Chart

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Types of Data Range Violations Detecting Data Range Violations Data Range Violation Example

Types of Data Range Violations

Stateflow software detects the following data range violations during simulation:

• When a data object equals a value outside the range of the values set in the Initial, Minimum, and Maximum fields specified in the Data properties dialog box

  See Setting Data Properties in the Data Dialog Box for a description of the Initial, Minimum, and Maximum fields in the Data properties dialog box.

• When the result of a fixed-point operation overflows its bit size

  See Detecting Overflow for Fixed-Point Types for a description of the overflow condition in fixed-point numbers.

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Detecting Data Range Violations

To detect data range violations during a simulation:

1. Build the target with debugging enabled.

2. Invoke the Debugger and select Data Range.

3. Start the simulation.

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Data Range Violation Example

The following chart has a data range violation.

Assume that the data a has an Initial and Minimum value of 0 and a Maximum value of 2. Each time an event awakens this chart and state A is active, a increments. The value of a quickly becomes a data range violation.

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Debugging Conflicting Transitions in a Chart

Debugging Cyclic Behavior in a Chart

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