Memory
Outputs the value of the input from the previous calculation step.
Description
The Memory block delays the input by one basic calculation step. This block accepts signals of any supported type (in terms of signal sampling type).
The block accepts one input signal and generates one output signal.
The block output for the first time step is set by the Initial condition parameter. Correct selection of this parameter can minimise undesired behaviour of the output signal. It is not possible to specify the calculation step of the block. The calculation step of this block depends on the type of solver used or is inherited.
The Inherit sample time parameter defines whether the calculation step is inherited or depends on the solver and input sampling type.
When the Memory block inherits a discrete calculation step, it is similar to the block Unit Delay.
Ports
Parameters
Main
Initial condition - initial condition
0 (by default) | scalar
The value of the output signal at the first simulation step.
Block parameter |
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Values |
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By default |
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Inherit sample time - calculation step inheritance
Off (by default) | On
-
On- the calculation step is inherited from the control block. -
off- the block calculation step depends on the type of solver used to run the model:If the solver is a variable step solver and:
-
the control block has a continuous calculation step, the calculation step will be of type
FiM. -
the control block has a discrete calculation step, the calculation step will be of discrete type.
If the solver is a constant step solver and:
-
the control block has a continuous calculation step, the calculation step will be a discrete step inherited from the solver.
-
the control block has a discrete calculation step, the calculation step will be discrete.
Usage in program code Block parameter
InheritSampleTimeValues
off|onBy default
off
-