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Chapter 2 Function Reference — Config_DAQ_Event_Message
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National Instruments Corporation 2-73 NI-DAQ FRM for PC Compatibles
The following string specifies SCXI channel 1 in SCXI module 2 of SCXI chassis 4 as the
trigger channel:
SC4!MD2!CH1
The following specifies AMUX channel 34 on the AMUX-64T device 1 as the trigger
channel:
AM1!34
You can specify only one AMUX channel in the chanStr parameter.
You also can specify more than one channel as the trigger channel by listing all the channels
when specifying channel number. For example, the following string specifies onboard analog
input channel 2, 4, 6, and 8 as the trigger channels:
AI2,AI4,AI6,AI8
Also, if your channel numbers are consecutive, you can use the following shortcut to specify
onboard analog input channels 2 through 8 as trigger channels:
AI2:8
DAQEvent indicates the event criteria for user notification. The following table describes the
different types of messages available in NI-DAQ. A scan is defined as one pass through all
the analog input or output channels or digital ports that are part of your asynchronous DAQ
operation.
Note If you are using a DAQ device in a remote SCXI configuration for digital I/O
operations, DAQ events are not supported.
Note To use a DIO device with this function, your device must be in handshaking
mode. Otherwise, NI-DAQ will not be able to search for the trigger condition
for your DIO device.