If a DAQmx channel is created for physicalChannel=Dev1/ai0:7 with nameToAssignToChannel=myChan09, then DAQmx will assign Dev1/ai0 the name myChan09, Dev1/ai1 the name myChan10, and so on. In particular, notice the renumbering of the channels and the zero padding of the numbers. See https://www.ni.com/docs/en-US/bundle/ni-daqmx/page/nameassignment.html for reference.
nidaqmx calculates the virtual names incorrectly.
To demonstrate, run the following script:
import nidaqmx
with nidaqmx.Task() as task:
ai_channel = task.ai_channels.add_ai_voltage_chan("XSeries6363/ai0:3")
print(ai_channel.name)
print(ai_channel.chan_type)
with nidaqmx.Task() as task:
ai_channel = task.ai_channels.add_ai_voltage_chan("XSeries6363/ai0:3", name_to_assign_to_channel="myChan09")
print(ai_channel.name)
print(ai_channel.chan_type)
It will fail on the last line with nidaqmx.errors.DaqError: Specified channel is not in the task..
If a DAQmx channel is created for physicalChannel=
Dev1/ai0:7with nameToAssignToChannel=myChan09, then DAQmx will assignDev1/ai0the namemyChan09,Dev1/ai1the namemyChan10, and so on. In particular, notice the renumbering of the channels and the zero padding of the numbers. See https://www.ni.com/docs/en-US/bundle/ni-daqmx/page/nameassignment.html for reference.nidaqmx calculates the virtual names incorrectly.
To demonstrate, run the following script:
It will fail on the last line with
nidaqmx.errors.DaqError: Specified channel is not in the task..The output before that is