Error 1 when DAQ using express VI

[Markshi]

Hi,all

I encountered with this error after my VI ran for several days in DAQ, and after this happened, the DAQ stopped for a while and then work well again.

Am wondering what is the root cause of this problem, why it happends and recovered by itself ?

Error 1 occurred at Write To Measurement File R->DAQ_Volt - cDAQ_USB_errormessage.vi

Possible reason(s):

LabVIEW:  An input parameter is invalid. For example if the input is a path, the path might contain a character not allowed by the OS such as ? or @.
=========================
NI-488:  Command requires GPIB Controller to be Controller-In-Charge.

Thank you,

Best,

Zhe

[mikeporter]

Error 1 simply means that an input was bad and depending upon the function that generated the error "bad" could mean a lot of things. Another complication is that it happened insided an express VI - and you can't see inside an express VI (yet another reason to get away from using them as soon as you can).

Does this happen repeatedly? Can you probe the inputs to the Express VI to see what they are when it happens?

Mike...