NX Nastran DMAP Programmer's Guide - Kxcad.net

6
Parameters
Complex Constants
A complex constant is a pair of real constants separated by a comma and enclosed in
parentheses. The first real constant represents the real part of the complex number,
and the second real constant represents the imaginary part.
Logical Constants
A logical constant is specified as TRUE or FALSE.
Character Constants
A character constant is a string of 1 through 80 characters that may have embedded
blanks. A character constant must also be enclosed by right hand single quotation
marks.
Variable Parameters
A variable parameter is represented by a symbolic name, and its value may change
during the DMAP execution. The name of a variable parameter does not have to be
unique with respect to symbolic names for modules, data blocks, subDMAPs, or
LABELs. The name of a variable parameter cannot be NOT, AND, XOR, OR, or EQV.
Variable parameters can have their attributes (type, authorization, and default) set
explicitly with a TYPE DMAP statement or implicitly by a module. (Variable
parameters that are saved on the database must also be designated as NDDL
parameters in the TYPE DMAP statement). Variable parameters that are not specified
with a TYPE DMAP statement use the attributes from the DMAP instruction where
the parameter first appears.
Value of a Variable Parameter
During a DMAP execution or when restarting a DMAP from the database, the value
of a variable parameter is determined by the first applicable value on the following
sequential list:
1. Value from the most recently executed assignment DMAP statement or the
most recently executed save function (S,N prefix. See “DMAP Modules and
Statements” on page 757).
2. Value from the PARAM Bulk Data entry, if the parameter NAME has the
Y authorization.
3. Value saved on the database, if the parameter NAME is listed with an NDDL
TYPE DMAP statement and the run is a restart.