IfThenElse
The IfThenElse block redirects its activation signal to one of its output activation ports, creating synchronism between its outgoing event and activating event. The activation port the block selects depends on the value of the regular input: when the value is larger than zero, the block selects the first output activation port, otherwise the block selects the second port.
Library
Activate/ActivationOperations
Description
The IfThenElse block is the counterpart to the conditional If Statement used in programming languages, such as C. Known, as a Synchro type of block, the IfThenElse block is special because it has the property to redirect its activation signal to one of its output activation ports, creating synchronism between its outgoing event and activating event.
One event is generated on one of the output event ports when an input event arrives. Depending on the sign of the regular input, the event is generated on the first or second output: when the value is larger than zero, the block selects the first output activation port, otherwise the block selects the second port.
The explicit input should be a scalar of any data type. In case of complex, only the real part is taken into account.
Parameters
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
externalActivation | External activation | This parameter specifies whether the block receives an external activation or inherits its activation through its regular input ports. When External Activation is used, an additional activation port is added to the block. Default is OFF. | Number | 0 |
nmod | Zero-Crossing | Turn this parameter ON to detect the zero crossings. Default is OFF. | Scalar | 0 |
Ports
| Name | Type | Description | IO Type | Number |
|---|---|---|---|---|
Port 1 | activation | input | externalActivation | |
then | activation | output | 1 | |
else | activation | output | 2 | |
If in>0 | explicit | input | 1 |
Advanced Properties
| Name | Value | Description |
|---|---|---|
always active | no | |
direct-feedthrough | yes | |
zero-crossing | no | depends on block parameters. |
mode | no | |
continuous-time state | no | |
discrete-time state | no |