LabVIEW Error -200077 in DAQmx Start function

[ramsinghsivaramkumar]

Hi,

We are seeing below error in “DAQmx Start Task.vi” function. It’s not accepting minimum and maximum value between -10 to 10V and throwing the error. And, it’s expecting minimum and maximum value between  -0.080mV to 0.080mv. I’m not seeing the error, if I’m using the value between -0.080mV to 0.080mv for min and max. There is no error when creating the task and configuring the timing.

Could you please let me know, is there any settings we are missing?

NI – PXIe 6341

RT system

Error:

Error -200077 occurred at DAQmx Start Task.vi:7220001

Possible reason(s):

Requested value is not a supported value for this property. The property value may be invalid because it conflicts with another property.

Property: AI.Min

Requested Value: -5.0

Value Must Be Greater Than: -80.0e-3

Value Must Be Less Than:  80.0e-3

Channel Name: PXI1Slot3/ai0

Task Name: _unnamedTask<5>

[Kevin_Price]

You've probably defined a scale for the channels in your task.  I've been bitten by this before too.  When you have a scale, AI min and max are for the post-scaled units not for raw voltage.

-Kevin P

[ramsinghsivaramkumar]

Hi Kevin,

Thanks for the reply.

I didn't defined the scale for the channel when creating task. I am just creating the task with min and max values. And, i'm searching how to define the scale for channel.

[Kevin_Price · Accepted solution]

Sorry, no other ideas.  With that board and code snapshot, I'd expect to be able to specify +/- 10 V for max/min without error.  All I can think is to double check that the physical channel really *is* on the 6341 board.

-Kevin P

[ramsinghsivaramkumar]

Hi Kevin,

I'm pointing to the wrong thermocouple channel instead of 6341. Thanks You.