Hello dear member

please check the attachment for a sample project and snapshot
of the online test.OK flag which is system memory (boolean),
is used to ensure proper execution of functions.There are 2 ways
to activate this option: from options-> customize or activation in
program as it is done here.Errors in arithmatic, math and conversion functions
,... can be detected by this procedure.


[code]

{CreateDebugInfo:='yes';SetOKFlag:='yes'}
FUNCTION FC1:VOID

VAR_INPUT
ein1:int;
ein2:int;

END_VAR

VAR_OUTPUT
out:int ;

END_VAR

out:=(ein1)+ ein2 ;

END_FUNCTION

[/code]

this is the STL codes for this function:
[code]
SET
SAVE
= L 0.1
L #ein1
L #ein2
+I
JO I007 //jump on overflow
JU I008
I007: CLR
= L 0.1
I008: T #out
CLR
A L 0.1
SAVE
BE
[/code]

check the SCL codes while calling the function,ENO of FC1 is used
to conclude the proper execution of it.

[code]

ORGANIZATION_BLOCK OB1

VAR_TEMP
Info: ARRAY[0..19] OF BYTE;
END_VAR

FC1 (EIN1:=HD1 , EIN2:=HD2,OUT:=HD3);
IF ENO THEN
ERROR:=FALSE;
ELSE
HD3:=1000;
ERROR:=TRUE;
END_IF;

END_ORGANIZATION_BLOCK

[/code]

this is also STL equivalent of above SCL codes
[code] SET
SAVE
= L 20.1
UC FC 1
P#M 0.0
P#M 2.0
P#M 4.0
A BR //Binary result zero shows error in block processing
JCN A7d0
CLR
= "ERROR"
JU A7d1
A7d0: L 1000
T "HD3"
SET
= "ERROR"
A7d1: CLR
A L 20.1
SAVE
BE[/code]

please note that before start programming in SCL, I completed
the symbol table.
regards-hdhosseini