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nodes

Define component nodes, that is, conserving ports of block

Syntax

nodes a = package_name.domain_name; end     

Description

nodes begins a nodes declaration block, which is terminated by an end keyword. This block contains declarations for all the component nodes, which correspond to the conserving ports of a Simscape™ block generated from the component file. Each node is defined by assignment to an existing domain. See Declaring Component Nodes for more information.

The following syntax defines a node, a, by associating it with a domain, domain_name. package_name is the full path to the domain, starting with the top package directory. For more information on packaging your Simscape files, see Generate Custom Block Libraries from Simscape Component Files.

nodes
    a = package_name.domain_name;
end

You can specify the port label and location, the way you want it to appear in the block diagram, as a comment:

nodes
    a = package_name.domain_name;  % label:location
end

where label is a string corresponding to the port name in the block diagram, location is one of the following strings: left, right, top, bottom.

Examples

The following example uses the syntax for the Simscape Foundation mechanical rotational domain:

nodes
    r = foundation.mechanical.rotational.rotational;
end

The name of the top-level package directory is +foundation. It contains a subpackage +mechanical, with a subpackage +rotational, which in turn contains the domain file rotational.ssc.

If you want to use your own customized rotational domain called rotational.ssc and located at the top level of your custom package directory +MechanicalElements, the syntax would be:

nodes
    r = MechanicalElements.rotational;
end

The following example declares an electrical node using the syntax for the Simscape Foundation electrical domain. In the block diagram, this port will be labelled + and will be located on the top side of the block icon.

nodes
    p = foundation.electrical.electrical; % +:top
end
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