msl.equipment.connection_nidaq module

Uses NI-DAQ as the backend to communicate with the equipment.

class msl.equipment.connection_nidaq.ConnectionNIDAQ(record)[source]

Bases: Connection

Uses NI-DAQ to establish a connection to the equipment.

See the nidaqmx examples for how to use NI-DAQ.

The returned object from the connect() method is equivalent to importing the NI-DAQ package.

For example:

nidaqmx = record.connect()
with nidaqmx.Task() as task:
    task.ai_channels.add_ai_voltage_chan('Dev1/ai0')
    voltage = task.read()

is equivalent to:

import nidaqmx
with nidaqmx.Task() as task:
    task.ai_channels.add_ai_voltage_chan('Dev1/ai0')
    voltage = task.read()

The backend value must be equal to NIDAQ to use this class for the communication system. This is achieved by setting the value in the Backend field for a connection record in the Connections Database to be NIDAQ.

Do not instantiate this class directly. Use the connect() method to connect to the equipment.

Parameters:: record (EquipmentRecord) – A record from an Equipment-Register Database.

property constants: Returns the nidaqmx.constants module.

property CtrFreq: Returns the CtrFreq class.

property CtrTick: Returns the CtrTick class.

property CtrTime: Returns the CtrTime class.

property DaqError: Returns the DaqError class.

property DaqResourceWarning: Returns the DaqResourceWarning class.

property DaqWarning: Returns the DaqWarning class.

property errors: Returns the nidaqmx.errors module.

property Scale: Returns the Scale class.

property stream_readers: Returns the nidaqmx.stream_readers module.

property stream_writers: Returns the nidaqmx.stream_writers module.

property system: Returns the nidaqmx.system module.

property Task: Returns the Task class.

property types: Returns the nidaqmx.types module.

property utils: Returns the nidaqmx.utils module.

property version

The NI-DAQmx driver version number.

Type:: str