IN_f

Block Screenshot

Contents

• Description
• Data types
• Parameters
• Default properties
• Example
• Interfacing function
• See also

Description

This block represent a regular input port. It must only be used inside a Xcos Super Block and be connected to a regular input in the subsystem.

This block is a signal link from outside of a system into a sub-system. In a Super Block, the regular's input ports must be numbered from 1 to the total number of regular's input ports. You can set it with the Port number parameter.

Data types

• Output : same type that the input connected to it in the sub-system.

Parameters

• Port number

  An integer defining the port number.

  Properties : Type 'vec' of size 1.

• Output port size

  An vector of two integers defining the expected signal dimensions ([#rows #columns]). By default this field is set to [-1 -2] which means that the dimensions are inherited from the upper level. It should be useful to assign fixed values for separate compilation of the super block (Code Generation ).

  Properties : Type 'vec' of size -1.

• Output port type

  An integer defining the expected signal type. By default this field is set to 1 which means that the type is inherited from the upper level. It should be useful to assign a fix value for separate compilation of the super block (Code Generation ).

  Properties : Type 'vec' of size 1.

Default properties

• always active: no

• direct-feedthrough: no

• zero-crossing: no

• mode: no

• regular outputs:

  - port 1 : size [-1,-2] / type -1

• number/sizes of activation inputs: 0

• number/sizes of activation outputs: 0

• continuous-time state: no

• discrete-time state: no

• object discrete-time state: no

• name of computational function: input

Example

In the following example the Super block is an amplitude modulator. The IN_f block is used as a modulation signal input. Its data type is defined by the input type of the gain block that is a scalar double data type.

The following figure shows the output of the bloc :

Interfacing function

• SCI/modules/scicos_blocks/macros/Sinks/IN_f.sci

See also

• OUT_f — Regular Output Port
• SUPER_f — Super block