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DAQmx_GetDigitalChannel
Returns array of values from a digital channels.
Syntax
void avl::DAQmx_GetDigitalChannel ( DAQmx_GetDigitalChannelState& ioState, atl::Optional<const atl::String&> inDeviceID, avl::DAQmxTaskID inTaskID, atl::Optional<int> inTimeout, atl::Array<bool>& outValues, atl::Conditional<avl::DAQmxTaskID>& outTaskID )
Parameters
| Name | Type | Default | Description | |
|---|---|---|---|---|
| ioState | DAQmx_GetDigitalChannelState& | Object used to maintain state of the function. | ||
 |
inDeviceID | Optional<const String&> | NIL | Device alias, product name or a serial number |
|
inTaskID | DAQmxTaskID | ID of task to read sample from | |
|
inTimeout | Optional<int> | NIL | Time (in milliseconds) to wait for the function to get sample |
 |
outValues | Array<bool>& | Digital values read from task | |
|
outTaskID | Conditional<DAQmxTaskID>& | ID of a created task |
Remarks
Device driver software
This filter is intended to cooperate with digital I/O cards using its vendor driver software. To be able to connect to a card it is required to install NI-DAQmx driver software. Currently Adaptive Vision Studio requires NI-DAQmx version 9.5.
NI-DAQmx driver software can be downloaded from the following website: http://www.ni.com/dataacquisition/nidaqmx.htm.
Device identification
When there is only one device connected to computer, inDeviceID field can be set to Auto. In this situation first available device will be found and connected.
inDeviceID can be used to pick one of multiple devices connected to computer. Set this field to Device alias (for example "Dev1"), product name or serial number. This parameters should be available in Measurement & Automation Explorer.
