Is it possible to check if all parameters are connected while running?

[OnlyOne]

Hello,

i have a Vi with one input "Text" and another parameter "bool".

Is it possible to check if the bool-parameter was wired if called from another vi?

Reason:

If not wired i want to write only the text to a logfile

and if wired i want to write a text + the state of the boolean value.

So something like a property "ValueIsWired" that can be used then with a tru/false case to generate different outputs.

Thx

[CMW..]

Hey,

you could set the input of the sub VI to "recommended" and set the string you want to write if not wired as default (right click the control -> Data operations->make current value default ) for the control. So if it is wired it will take the string you wired, otherwise it will work with the default one.

Regards,

CMW

[CMW..]

Ahh, I missed the boolean, ...

but the idea remains with the default values.

Regards, CMW

[P@Anand]

As far I know there is no property available. You can do it in another way, instead of giving Boolean as terminal provide a variant input and check whether it is empty or not.

[Yamaeda]

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@OnlyOne wrote:

Hello,

i have a Vi with one input "Text" and another parameter "bool".

Is it possible to check if the bool-parameter was wired if called from another vi?

Reason:

If not wired i want to write only the text to a logfile

and if wired i want to write a text + the state of the boolean value.

So something like a property "ValueIsWired" that can be used then with a tru/false case to generate different outputs.

Thx

---

Default bool to False, only write State if True. 🙂

/Y

[JÞB]

This is a case where I would not favor a boolean.  You can't tell if the value was wired with the default value or if it was unwired.  Luckilly, a signed integer terminal with a -1 default would offer better options.  (The Caller shoud probably never pass in a negative value)  You simply need more than two possible values.

[Philipp_Kost]

Hi,

I totaly agree with Jeff.

You usually use self defined default values(differents from the LV default value for every datatype) for sub-VIs for the case of unwiring these terminals.

The other possibility is using the recommended terminal setting.

For the boolean terminal, two values aren't enough. Many VIs use these '-1' default value for detecting a wired terminal.(-> timeout, DAQmx read).

Philipp

[Yamaeda]

If you want to write the status flag, whether true or false, you'll need an extra input "include status".

/Y