Type: SystemBoolean An initialized 2D array of boolean samples that contains the read data. Each element in the first dimension of the array corresponds to a channel in the task. Each element in the second dimension of the array corresponds to a line in that channel. The order of the channels in the array corresponds to the order in which you add the channels to the task or to the order of the channels you specify in ChannelsToRead
Return Value
Type: Boolean
A reference to the data parameter containing samples from the task.
Exceptions
Exception
Condition
ArgumentException
If data is or is uninitialized; or
If the first dimension of data does not match the number of channels.
There is not enough memory to carry out this operation.
Remarks
If the data buffer is large enough to hold the number of samples requested, this overload attempts to reuse existing memory allocated from the array to acquire data. This results in more efficient memory allocation when performing multiple reads with a continuous digital input task.
NI-DAQmx scales the returned data to the units of the measurement, including any custom scaling you apply to the channel. You specify these units with the create channel methods or the
DAQ Assistant.
NI-DAQmx read and write methods time out after the amount of time specified by the
Timeout
property on the task you are reading from or writing to.