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Latches for Subsystem Blocks

When an Inport block is the signal source for a triggered or function-call subsystem, you can use latch options to preserve input values while the subsystem executes. The Inport block latch options include:

For...	You Can Use...
Triggered subsystems	Latch input by delaying outside signal
Function-call subsystems	Latch input by copying inside signal

When you use Latch input by copying inside signal for a function-call subsystem, the Real-Time Workshop code generator

• Preserves latches in generated code regardless of any optimizations that might be set

• Places the code for latches at the start of a subsystem's output/update function

For more information on these options, see the description of the Inport block in the Simulink documentation.

Sample Time Propagation

Block Execution Order

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