VA Motion Controller Programming Manual
42
6 .3 ST structured text programming language
Structured text programming language S T is a high level language, similar to
the Pascal programming language, it does not use low-level machine-oriented operators, but using
a similar date statements often language to describe control commands, sophisticateDAlgorithms
can be described. A structured text language prograMConsists of statements consisting of
expressions and keywords with the following characteristics :
There is no jump statement, and the conditional statement is used to implement the branch
of the program ;
Each statement ends with a semicolon " ; " ;
with ( ** ) add comments to the program, comments can not be nested, such
as ( * ( ** ) * );
Need to declare input, output, internal, external, global variables in the variable worksheet
corresponding to the POU ;
6 .3.1 create aNST program
Using
ST
language programming, the user can type a statement in the editing area, or drag
and drop the command directly into the editing area in the " Edit Wizard " , and then type the
operanDAnd the ending character "
;
" below with an
A*B=OUT
( multiplication ) program as an
example
ST
programmed pass procedure
:
1>
Create a project
2>
Right Project tree " series of
the POU
" , select Insert a program, pop-up dialog box, type
the program name in the dialog box, in this case
ST_Text
, select the language bar
ST
, click " OK "
as shown.
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