Hello,

I'm trying to use this formula ... (hdhosseini posted a while back)

It's says I have Identifiers missing or invalid ... I'm just starting to venture into SCL.  I need a push please! Regards & Thank You!

FUNCTION_BLOCK FB7255

VAR_INPUT
    MD0: TIME;
END_VAR
                    
VAR_OUTPUT
    MD4: REAL;

END_VAR

// MD0 defined as TIME and MD4 as real in Symbol Table

MD4:= ROUND(DINT_TO_REAL(TIME_TO_DINT(MD0))/1000.0) ;
                
END_FUNCTION_BLOCK

Thank you for your reply....

After having done as your directed I got this message ( please the attachment.)

A colleague tried his hand at it, He put back the variables make and made the names for them without the "M" .... However this yielded a block with no inputs ...

Thanks again you for your efforts...

Hi,

Invalid data type... You try to divide DINT with a Real... I think you are missing a bracket.

MD4:= ROUND((DINT_TO_REAL(TIME_TO_DINT(MD0)))/1000.0) ;

Is it any better?

Note: Why not define a block input/output to improve code readability? It hard to see what is MD4 and MD0 in your symbols.

Hi,

Agree. As we do not see the symbols so it is diffcult to say anything. So why not define the block inputs/outputs. Then we could see the data types as well. I marked up the changes I try to point out by BOLD.

VAR_INPUT
    MyTime: TIME;
END_VAR
                    
VAR_OUTPUT
    MyReal: REAL;

END_VAR

// MD0 defined as TIME and MD4 as real in Symbol Table

MyReal := ROUND(DINT_TO_REAL(TIME_TO_DINT(MyTime))/1000.0) ;
                
END_FUNCTION_BLOCK

I do not have compiler open, but something like this should compile.I hope you will find this idea usefull!

Note: if you create a block, always try to use the block interfaces so the block will be easily re-useable and readable!

I hope I could help!