How to read the output from a digital counter using python?

[Kannaki]

I am able to read the counter output from labview but when I tried to implement the following code in python I am unable to read the counter. I am in urgent need to solve this problem could someone please help out?  

Python code: 

import nidaqmx

from nidaqmx.constants import AcquisitionType, TaskMode, CountDirection, Edge
from nidaqmx._task_modules.channels.ci_channel import CIChannel
from nidaqmx._task_modules.channel_collection import ChannelCollection

with nidaqmx.Task() as task:
#create virtual channel
task.ci_channels.add_ci_count_edges_chan('Dev1/ctr1', initial_count=0, edge=Edge.RISING, count_direction=CountDirection.COUNT_UP)
task.read()

I get the following error

Traceback (most recent call last):
File "C:\Users\AppData\Local\Programs\Python\Python36-32\lib\site-packages\nidaqmx\_lib.py", line 139, in __getattr__
cfunc = getattr(self._library, function)
File "C:\Users\AppData\Local\Programs\Python\Python36-32\lib\ctypes\__init__.py", line 361, in __getattr__
func = self.__getitem__(name)
File "C:\Users\AppData\Local\Programs\Python\Python36-32\lib\ctypes\__init__.py", line 366, in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
AttributeError: function 'DAQmxReadCounterU32Ex' not found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\....\TrialRead_DigSensor.py", line 33, in <module>
a= task.read()
File "C:\Users\AppData\Local\Programs\Python\Python36-32\lib\site-packages\nidaqmx\task.py", line 686, in read
self._handle, data, number_of_samples_per_channel, timeout)
File "C:\Users\AppData\Local\Programs\Python\Python36-32\lib\site-packages\nidaqmx\_task_modules\read_functions.py", line 359, in _read_counter_u_32_ex
cfunc = lib_importer.windll.DAQmxReadCounterU32Ex

File "C:\Users\AppData\Local\Programs\Python\Python36-32\lib\site-packages\nidaqmx\_lib.py", line 149, in __getattr__
'version of NI-DAQmx.'.format(function))
nidaqmx._lib.DaqFunctionNotSupportedError: The NI-DAQmx function "DAQmxReadCounterU32Ex" is not supported in this version of NI-DAQmx. Visit ni.com/downloads to upgrade your version of NI-DAQmx.

[bstreiff]

Which version of NI-DAQmx are you using?

The "DAQmxReadCounterU32Ex" C API function, which the Python bindings use under the hood, was added in DAQmx 14.5, so you'll need that version of DAQmx or later to use that functionality.

[Kannaki]

Thanks a lot for your help !! I updated my DAQmx to 14.5 and it works now.