Is Connected?
Indicates whether Simulink is currently connected to the model.
Library
Description
The Is Connected? block outputs a Boolean signal indicating whether Simulink is currently connected to the model. In normal simulation, this output is always true because the sink blocks, like Scopes, operate as expected and parameters may be tuned.
This block may be used to issue an audible alarm (using the Beep block) when Simulink becomes disconnected, or to reduce the computational overhead required by a model by eliminating calculations that are only done for plotting purposes.
Limitations
Targets
This block is only supported by QUARC targets. It does not work with the Rapid Simulation target or GRT because there are
no mechanisms for determining if Simulink is connected to the model for those targets.
Input Ports
This block has no input ports.
Output Ports
This block has a single output port indicating whether Simulink is connected.
Parameters and Dialog Box
Sample time
The sample time of the block. A sample time of 0 indicates that the block will be treated as a continuous time block. A positive sample time indicates that the block is a discrete time block with the given sample time.
A sample time of -1 indicates that the block inherits its sample time. Since this is a source block, only inherent the sample time when it is placed in a conditionally executed subsystem, like a Triggered Subsystem, Enabled Subsystem, Function Call Subsystem or in a referenced model.
To use the fundamental sampling time of the model, set the sample time to qc_get_step_size, which is a QUARC function that returns the fundamental sampling time of the model.
The default sample time is set to qc_get_step_size.
Targets
|
Target Name |
Compatible* |
Model Referencing |
Comments |
|---|---|---|---|
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
||
|
Yes |
Yes |
Last fully supported in QUARC 2018. |
|
|
Rapid Simulation (RSIM) Target |
Yes |
Yes |
|
|
S-Function Target |
No |
N/A |
Old technology. Use model referencing instead. |
|
Normal simulation |
Yes |
Yes |
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