Download Control FPWIN Pro Reference Manual

Control FPWIN Pro Reference Manual
Programming Editors
8.2.4 Instructions
The ST editor’s instructions are:
•
the assignment instruction :=
•
the specification instructions IF, CASE
•
the repeating instructions FOR, WHILE, REPEAT along with the quit instruction EXIT
•
the return instruction RETURN
Keyword
Description
:=
Assignment
Example
a:=87;b:=b+1;c:=SIN(x);
Calling functions Y:=SIN(x);
Y:=LIMIT(MN:=0,IN:=X,
MX:=100);
Explanation
The value on the right is assigned to
the identifier on the left
Function’s argument in shorthand
Function arguments with formal
parameters
Note:
The order does not matter for
arguments with formal parameters.
With user functions, the EN input
and output can be omitted.
Omitted EN will be interpreted as
TRUE.
Y:=LIMIT(0, X, 100);
Function arguments without formal
parameters
Note:
The order matters for arguments
without formal parameters.
The case of letters is not significant.
Calling FBs
TON1( IN:= Start1,
PT:=T#300ms ,
Q=> End1 ,
EV=> EV_1 );
Ton1(IN:=Start1,
PT:=T#300ms);
End1:=Ton1.Q;
Ev1:=Ton1.EV;
Function block arguments with
formal parameters
Note:
The order does not matter for
arguments with formal parameters.
Function block arguments without
formal parameters
Note:
The order matters for arguments
without formal parameters.
The case of letters is not significant.
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