DINT converting into a string... (S7)

[userxyz]

I have 3 values.

DINT values.

They make a product number when assembled together.

D: DINT;
L: DINT;
H: DINT;

The variables D, L and H are entered in WinCC Flexible Runtime.

What I need as a result is:

D.L.H as string format


If D=25, L=3000 and H=30

Then I want a string like this:

25.3000.30


Can this be done in STL or SCL ?

 

[S7Guy]

That's pretty easy, but what are you doing with this string? If it needs to be converted to a string, why don't you just enter it as a string in the first place?

 

[userxyz]

to show

I want to show a string in wincc flex...

okay, I could place 3 I/O fields and place decimal points between them...

to convert, calculate it to ascii chars and use the ASCII table ?

That's pretty easy, but what are you doing with this string? If it needs to be converted to a string, why don't you just enter it as a string in the first place?

 

[userxyz]

hmm

I Agree

I will place I/O fields...

I made it AGAIN, to difficult

That's pretty easy, but what are you doing with this string? If it needs to be converted to a string, why don't you just enter it as a string in the first place?

 

[S7Guy]

Let me get this straight: You want them to be able to enter something like 20.1000.45. And, these three values are written down and used as INTs in the PLC? Could you just use three fields in Flex and add an ASCII "." between them? Or will Flex not let you do that?

Anyway, if converting in unavoidable, I wouldn't use a table. If you are just using numbers, all you have to do is add 48 to each digit to convert it to ASCII. For instance, decimal 5 = ASCII 53 (or it might be easier to think in terms of hex, where 0x30 - 0x39 = decimal 0 - 9). Then, for multi-digit INTs, you will have to seperate each digit by dividing by 10, 100, 1000, etc and extracting digit that needs to be converted.

edit: Ok, nevermind. I'm glad you got it working.

 

[jvdcande]

Combo, in the Standard Library under IEC Function Blocks you'll find

• FC5 DI_STRNG to convert from DINT to string
• FC2 CONCAT to concatenate strings

These should do the trick, even in ladder.

[edit]I just tested it and you also need IEC Function FC4 DELETE to get rid of the sign in the strings.[/edit]

Kind regards,

 

[userxyz]

I'll

I'll try them, thanks

Combo, in the Standard Library under IEC Function Blocks you'll find

• FC5 DI_STRNG to convert from DINT to string
• FC2 CONCAT to concatenate strings

These should do the trick, even in ladder.

[edit]I just tested it and you also need IEC Function FC4 DELETE to get rid of the sign in the strings.[/edit]

Kind regards,