Define component nodes, that is, conserving ports of block
nodes a = package_name.domain_name; end
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 Declare 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 Building Custom Block Libraries.
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.
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