Accessory Auto-Detection - National Instruments SC Express PXIe-4309 User Manual

Set the synchronization type of the Start Trigger slaves at DAQmx Trigger»Advanced»
4.
Synchronization»Synchronization Type to Slave and that of the Master to Master.
5. Start all of the start trigger slave module tasks. This sets them up to expect the start trigger
from the master.
6. Start the start trigger master module task. You can now acquire data.
Consider using a multi-device task when synchronizing multiple devices at the
Tip
same rate.
You can find example VIs in the NI Example Finder. Select Help»Find
Tip
Examples to launch the NI Example Finder.

Accessory Auto-Detection

SC Express modules automatically detect compatible accessories or terminal blocks. The RSVD
pins on the I/O connector provide power to the accessories as well as digital communication
lines. This allows software to detect when accessories are inserted or removed. In addition,
software can automatically identify the specific terminal block as well as access any calibration
or scaling information associated with the terminal block.
MAX allows you to see which accessories are currently connected to your module. In MAX,
expand Devices and Interfaces and locate your module. If a terminal block is connected to your
module, it will be displayed beneath the module. Unsupported terminal blocks appear in MAX
with an X next to them.
NI-DAQmx property nodes can be used to programmatically access information about
connected accessories in your application. Refer to the NI-DAQmx Help for documentation
about programmatically accessing accessory status.
PXIe-4309 User Manual
© National Instruments | 2-21