How to get the last error for while loop?

[kuqishashou]

How to get the last error for while loop? I just want transfer the last error for while loop, but the program use the shift register shift all error every cycle.

[altenbach]

What do you mean by "get" and "transfer"?

If the shift register is not what you want, use a plan tunnel instead.

Typically, programmers are interested in the first, not last, error.

Can you show us your code so we have a better idea what you are trying to?

[Norbert_B]

If you stop the while loop with an error condition, the first error should be automatically the last error 😉

And this is basically the best question Christian arises: why do you want to proceed with the loop even though there already is an error, but are interested in the LAST error instead of the FIRST error?

Norbert