how to step through the code?

[yong]

I have vi which is written by other. I try to step through the code,
but I can not find the button on the block diagram tool buttons.

How to enable it?

[altenbach]

Go to "File...VI properties...Execution" and place a checkmark in "Allow debugging". (If the option is greyed out, uncheck "reentrant" first).

[altenbach]

Additional note: The VI also cannot be set to "subroutine" priority if you want debugging enabled.

So:
-1- if priority is set to "subroutine", set it to "normal".
-2- If VI is set to "reentrant execution", uncheck it.
-3- check "allow debugging".

Good luck!

[yong]

Thanks,

[yong]

thanks,