COChannelCollection.CreatePulseChannelTime Method
- Updated2023-02-21
- 2 minute(s) read
COChannelCollectionCreatePulseChannelTime Method
Namespace: NationalInstruments.DAQmx
Assembly: NationalInstruments.DAQmx (in NationalInstruments.DAQmx.dll) Version: 20.7.40.49302
Syntax
public COChannel CreatePulseChannelTime( string counter, string nameToAssignChannel, COPulseTimeUnits units, COPulseIdleState idleState, double initialDelay, double lowTime, double highTime )
Public Function CreatePulseChannelTime ( counter As String, nameToAssignChannel As String, units As COPulseTimeUnits, idleState As COPulseIdleState, initialDelay As Double, lowTime As Double, highTime As Double ) As COChannel
Parameters
- counter
- Type: SystemString
The names of the counters to use to create the virtual channel. - nameToAssignChannel
- Type: SystemString
One or more names to assign to the created local virtual channels. To use the physical channel name as the local virtual channel name, set this value to Empty. - units
- Type: NationalInstruments.DAQmxCOPulseTimeUnits
The units to use to define pulse high and low time. - idleState
- Type: NationalInstruments.DAQmxCOPulseIdleState
The resting state of the output terminal. - initialDelay
- Type: SystemDouble
The amount of time in seconds to wait before generating the first pulse. - lowTime
- Type: SystemDouble
The amount of time that the pulse is low. - highTime
- Type: SystemDouble
The amount of time that the pulse is high.
Return Value
Type: COChannelThe newly created COChannel.
Exceptions
| Exception | Condition |
|---|---|
| DaqException | The NI-DAQmx driver returned an error. |
Remarks
This method creates a local virtual channel for every physical channel name you specify. If you create multiple local virtual channels with one call to this method, you can specify a comma-delimited list of names for nameToAssignChannel. If you provide fewer local virtual channel names in nameToAssignChannel than you create, NI-DAQmx automatically assigns names to the local virtual channels.
If you do not provide a value for nameToAssignChannel, NI-DAQmx uses the counter as the local virtual channel name. If you use nameToAssignChannel to create a name for the local virtual channel, you must use this name in other properties and methods.
The NI-DAQmx driver does not determine if the requested settings are possible until the task is verified. CreatePulseChannelTime(String, String, COPulseTimeUnits, COPulseIdleState, Double, Double, Double) does not throw an exception for parameter values that are not compatible with your hardware or other settings in your task. To determine if all of the settings for a Task are valid, you must verify the task by starting the task, either with Start or by reading from or writing to the task, or by calling Control(TaskAction) with Verify.