Vector VEC-VA Series, Programming Manual

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VA Motion Controller Programming Manual
32
specify the name of the data type worksheet, double-click the generated data type work order,
enter the editing area, type the following characters as shown
example:
Above code defines a containing
100
th
the IN T
are array variables, array name
DATAl
.
(3) Logical POU
1 ) The program organization unit POU is a language element of the PLC program. They
contain the prograMCode is the most small, independent software units. The name of
the
POU
must be unique within the project. The right-click " Logical
POU
" can be inserted into
the following three program organization units :
A:
〗
program (
PROGRAM
)
B:
〗
function block ( FUNCTION BLOCK )
C:
〗
function ( FUNCTION )
2
) Each
POU
consists of two different parts
: the
variable work order and the code ontology,
which are all variables that appear in the POU in the variable worksheet . A POU
code works with single-user IL, ST , FBD, the LD, the SFC five programming languages are written
one, where IL is an instruction list programming language ( Instruction List ) ST is a structured text
programming language ( Structured the Text ) ; FBD is a functional block diagram programming
language (
function block Diagram
)
, the LD
is the ladder programming language (
Relay ladder
Logic Diagram ) ; the SFC is a sequential function programming language ( the sequential function
the Chart ) .

function
" Function " , abbreviateDAs
FU
, is a program organization unit
POU
with multiple inputs
and one output . Similar to functions in high-level programming languages, the return value
of " function " can be simple data types such as
BOOL, IN T, etc. " function " internal can call
another " function " , but can not be called " functional blocks " or " program " does not allow
recursive call. When declaring a " function, you must declare input and output variables,
intermediate variables, and external variables in the variable worksheet of this " function " .
List of features supported by MULTIPROG :
Type conversion function Such as : IN_TO_REAL
Numerical function Such as : ABS and LOG
StandarDArithmetic function Such as : ADDA nd MUL
Bit string function
Such as
: ANDA
nd
SHL
Selection and comparison
function
Such as : SEL and GE