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USB-6218 DAQmxBase Error -200559

It doesn't operate well though I want to do the analog to digital conversion

 in the following use environments while outputting an analog signal.

 

Is there something a good method?

 

-DEVICE:USB-6218

-OS:OPENSUSE 10.3

-NI-DAQmx Base 3.3

 

(Err Message)

DAQmxBase Error -200559: Task cannot contain a channel with the specified channel type,
 because the task already contains channels with a different channel type.

Create one task for each channel type.

 

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Hi megazone23,

 

It looks like you're trying to include AI and AO channels into a single task.  You'll need to have a separate task for Analog Input and for Analog Output.

 

 

Best Regards,

John Passiak
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Thank you for the reply.

It is not possible to execute well though I tested according to advice.

 

I make two tasks.

One task outputs analog signal(below Program1), another task convert an analog signal(below Program2).

 

# ./program1

 

# ./program2

 

The following errors occurred in program2.

 

DAQmxBase Error -200220: <err>Device identifier is invalid.

 

but If it is only program2, it operates normally.

 

 

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