Vector VEC-VA Series, Programming Manual

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VA Motion Controller Programming Manual
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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.