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 # Step

 Last update: 17.07.2025 

The flow is 0 for a duration and then remains at 1.

The figure shows the output flow for a step with the following inputs:

- duration: 1
- ts (timesample): 0.1
- amplitude: 1
- offset: 0

![](/sites/default/files/git_ansys/scade_one_library_2024_r2_18_07_24/t__step_00.png)

## Interface

NameKindTypeCommentdurationIfloatDuration of the step  
Range: >0tsIfloatTime sample during the step  
Range: >0amplitudeIfloatGain to be applied to the output flow (default 1)offsetIfloatOffset to be added to the output flow (default 0)flowOfloatOutput flow**Constraint**: The ratio duration / ts must be greater than 2.

**Parent topic:**[Sources::T](../../libraries/sources/sources_t.md)