Error 200220 with DAQmx

[Lusitana05]

I am trying to use a NI USB 6210 device with NI-DAQmx.  My application gets:

Error -200220 occurred at DAQmx Create Channel (CO-Pulse Generation-Frequency).vi:1

Possible reason(s):

Device identifier is invalid.

Device Specified: Dev2

Task Name: _unnamedTask<1>

How can I fix this?

P.S.:I have not that much experience with this platform.

Best regards,

Ana Almeida

[josborne · Accepted solution]

Looks like you are trying to communicate with a device that is named "Dev2".  But LabVIEW can't find that device in the system.

To resolve this, open MAX (Measurement and Automation Explorer) from your desktop.  And look at the list of devices.  Its possible your device somehow got renamed, or maybe its just not being seen for some reason.  Or maybe its not plugged in properly!

[Lusitana05]

Thanks a lot, that was exactly it. Spent too much staring into the screen and, well, ended up missing the entire point. But working fine now 🙂

[KA007]

Hi I am also getting the same error message :

Error -200220 occurred at DAQmx Create Channel (AI-Voltage-Custom with Excitation).vi:2

Possible reason(s):

Device identifier is invalid.

Device Specified: SCC1Mod1

Task Name: _unnamedTask<1>

Have changed the device name to "SCC1MOD1" but when tried to run the program again after changing the name it gave this error message :((

Error -200478 occurred at DAQmx Read (Analog 1D DBL NChan 1Samp).vi:2

Possible reason(s):

Device identifier is invalid.

Device Specified: SCC1Mod2

Task Name: _unnamedTask<3>

Please help.

[moderator1983]

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@KA007 wrote:

Error -200220 occurred at DAQmx Create Channel (AI-Voltage-Custom with Excitation).vi:2
Possible reason(s):

Device identifier is invalid.
Device Specified: SCC1Mod1
Task Name: _unnamedTask<1>

Have changed the device name to "SCC1MOD1" but when tried to run the program again after changing the name it gave this error message :((

Error -200478 occurred at DAQmx Read (Analog 1D DBL NChan 1Samp).vi:2

Possible reason(s):

Device identifier is invalid.
Device Specified: SCC1Mod2
Task Name: _unnamedTask<3>

Please help.

---

Are you sure about the error message as error code -200478 says "Specified operation cannot be performed when there are no channels in the task."

If you're getting the above error message (error source), then:

Have you changed the name to "SCC1Mod2" but you are refering to other device named "SCC1Mod1"??