another SCL question

sparkysliderz · May 22, 2006

Hi Guys,

yeah, its me again! I'm slooooowly getting to grips with this SCL stuff but I am stuck again!

I am trying to read in a time variable from a DB and load it into a timer

Code:

FUNCTION FC1: VOID 
VAR_INPUT
	State:BOOL;	 
	ByteNum:INT;	 
	BitNum:INT;	 
	MyTime :TIMER; 
END_VAR
VAR
	TimerNum:INT;
	set:BOOL;
	reset:BOOL;
	bcdvalue:S5TIME;
	binvalue:WORD;
	initalvalue:S5TIME;
END_VAR
BEGIN
	 IF State = 1 THEN 
		q[ByteNum,BitNum]:=1;
	 END_IF;
	 IF State = 0 THEN
		q[ByteNum,BitNum]:=0;
	 END_IF;
	TimerNum:=WORD_TO_INT(db1.dbw8);
	set:=i[0,0];
	reset:=i[0,1];
[color=seagreen]	initalvalue:=T#10s;		 // this will compile[/color]
[color=red]	initalvalue:= db1.dbw6;	 // this wont!
[/color]	bcdvalue:= S_ODT( T_NO := TimerNum,
						s:= set,
						tv:= initalvalue,
						r:= reset,
						bi:= binvalue,
						q:=q0.7);
	qw4:=binvalue;
 
 
END_FUNCTION

BUT!..... I'm not sure what format the time value is in. Is there a "cast" function I should be using?

Each time i try to compile I have the following (unhelpful) error message, "Invalid Data Type"

I have tried to change the type of value from "S5TIME" to "Time" in the DB but I just cant get it to compile!

Any help would be appreciated!

Thanks in advance guys.

SimonGoldsworthy · May 22, 2006

I couldn't see the solution in Berger (for SCL) so my pragmatic solution is to add an s5time variable as an input parameter for your FC1 and then assign it to your temp variable. I was able to use DB1.dbw8 (declared as s5time type) in the parameter call to FC1

Code:

VAR_INPUT
	State:BOOL;	 
	ByteNum:INT;	 
	BitNum:INT;	 
	MyTime :TIMER;
   [b] Mys5Time:S5TIME;[/b] 
END_VAR
...
...
...
 
   [b]initalvalue:=Mys5Time;[/b]
...
...

sparkysliderz · May 22, 2006

OK thanks Simon.

another SCL question

sparkysliderz

Member

SimonGoldsworthy

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sparkysliderz

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