Echelon LonTal Stack - Manual (Page 170)

158 Appendix C: Appendix C
Neuron C Syntax for the
Model File
Functional Block Syntax
fblock FPT-identifier { fblock-member-list } identifier [ array-bounds ]
[
ext-name ] [ fb-property-list ] ;
fblock-member-list : fblock-member-list ; fblock-member
fblock-member
fblock-member : nv-reference implements member-name
nv-reference impl-specific
impl-specific : implementation_specific ( const-expr ) member-name
nv-reference : nv-identifier array-index
nv-identifier
array-index : [ const-expr ]
array-bounds : [ const-expr ]
ext-name : external_name ( concatenated-string-const )
external_resource_name ( concatenated-string-const )
external_resource_name ( const-expr : const-expr )
fb-property-list : See Functional Block Properties Syntax.
Keywords
fblock
Declares the functional block for the FPT-identifier functional-profile-type
identifier and the identifier functional block identifier.
The functional block declaration begins with the fblock keyword, followed by
the name of a functional profile from a resource file. The functional block is
an implementation of the functional profile. The functional profile defines
the network variable and configuration property members, a unique key
called the functional profile key, and other information. The network variable
and configuration property members are divided into mandatory members
and optional members. Mandatory members must be implemented, and
optional members may or may not be implemented.
The functional block declaration then includes a member list. In this
member list, network variables are associated with the abstract member
network variables of the profile. These network variables must have been
previously declared in the model file. The association between the members
of the functional block declaration and the abstract members of the profile is
performed with the implements keyword.
After the member list, the functional block declaration continues with the
name of the functional block itself. A functional block can be a single
declaration, or it can be a singly-dimensioned array.
If you do not specify an external name for the functional block, the functional
block identifier is limited to 16 characters.