Hi all,

Is it possible to get the type of a variable during runtime?

Something like : typeof in C# ?

Thank you.

//Declaration
VAR
   MyVarInfo: __SYSTEM.VAR_INFO;
   MyTestVar: INT;
END_VAR
//Code
MyVarInfo:= __VARINFO(MyTestVar);
//after this line of code MyVarInfo contains all information obout this variable - just watch in online mode and you will understand

BR
Ralph

Thanks, it works fine!

But how can someone get some info about these special functions?

I cannot find anything about it in the help.

Thank you.

Hi Ralph,

Thanks for the tip. This is very useful!

Tim

yannickasselin1 hat geschrieben:
Thanks, it works fine!
But how can someone get some info about these special functions?
I cannot find anything about it in the help.
Thank you.

Type "System." e.g. inside a ST Editor to come to those fancy stuff

Ralph Holz hat geschrieben:

//Declaration
VAR
   MyVarInfo: __SYSTEM.VAR_INFO;
   MyTestVar: INT;
END_VAR
//Code
MyVarInfo:= __VARINFO(MyTestVar);
//after this line of code MyVarInfo contains all information obout this variable - just watch in online mode and you will understand

BR
Ralph

Is there anyway to get a structures variables members without knowing them? Meaning if you pass a structure to _VARINFO how can you get info about it members?

If internals variables are exported to symbolic comunication, I am thinking that you want is posible via cmpiecvaracces.

But i have not found information about that library.

I have could see information, using cmpiecvaraccesd, of program variables but not about fb members

Josep M. Rams hat geschrieben:
If internals variables are exported to symbolic comunication, I am thinking that you want is posible via cmpiecvaracces.
But i have not found information about that library.
I have could see information, using cmpiecvaraccesd, of program variables but not about fb members

Hi, would you please post how to use iecvaraccess.

Thanks

jzhvymetal hat geschrieben:
Is there anyway to get a structures variables members without knowing them? Meaning if you pass a structure to _VARINFO how can you get info about it members?

Hi,
This is exactly what i need, did you find any workaround?

Thank you