Hi Wes,
From your description it sounds like you may not have identified the controller/PXI chassis combination in Measurement and Automation Explorer (MAX). I'm assuming that you are using an embedded controller in each of those chassis, but if you're actually using a remote controller the same information still applies. There is a file called PXISYS.INI that is automatically generated once you have properly identified the controller/chassis in use. The PXISYS.INI file provides mappings from PCI logical addresses (PCI bus, device, and function numbers) to corresponding PXI slot numbers, allowing device driver software to identify the slot of a PXI module. This would apply to the NI-DAQmx driver, and I believe is the reason why your DAQmx devices default to Dev1, Dev2, etc. upon rebooting your system. Here is a Knowledgebase article on our website that has more information on the PXISYS.INI file:
What Are PXISYS.INI and CHASSIS.INI?To properly identify the controller and chassis, right-click on the PXI System under "Devices and Interfaces" in MAX and choose "Identify as..." to select your particular controller and chassis. After doing this, you may need to reboot your computer and then Windows should find the devices automatically. If you run into any problems after doing this please let us know and also provide the following information:
1. controller type (model number if it is embedded)
2. chassis model
3. NI-DAQmx driver version
Regards,
Andrew W
National Instruments
