Frequently Asked Questions

NI Serial Hardware and Software

Frequently Asked Questions

How do I force Windows to detect my PCI, PXI, or PCMCIA hardware?

How do I force Windows to detect my USB hardware?

How do I force Windows to detect my ExpressCard hardware?

How can I determine which type of serial hardware I have installed?

Why does my PCI/PXI serial card display the wrong serial number?

How can I determine which version of the NI-Serial software I have installed?

How do I troubleshoot problems?

How can I determine whether my hardware and software are installed properly?

How can I repair my NI-Serial software?

How can I determine which port is associated with COMx?

How can I change the COM numbers of my National Instruments serial ports?

Why can't I make changes to my settings in MAX on Windows Vista?

Why does my hardware keep reappearing after I delete it on Windows Vista?

How many serial ports can I have on my machine?

How many interrupts are required for my serial interface?

How do I resolve serial USB power conflicts?

What is the difference between USB 2.0 and USB 1.1 and can I use the USB serial hardware in USB 2.0 networks?

Why isn't the Auto232 transceiver mode on my USB-232 working?

Why am I seeing poor performance on Windows XP when I use multiple USB serial interfaces?

Why did my USB serial ports enumerate backward?

How do I access my serial ENET interface using the hostname?

How do I communicate with serial ENET interfaces located on other subnets?

Why does the NI Ethernet Device Configuration utility list my serial ENET interface as *BUSY* when I know my network uses DHCP?

Why doesn't my serial ENET interface show up in the NI Ethernet Device Configuration utility?

Why did my application work with a plug-in interface but times out with a serial ENET interface?

What is the relationship between bits per second, throughput, and bus utilization?

What happens to data sent to a closed serial port?

Why do loopback tests of large data transfers sometimes have problems?

Does the serial hardware have built-in support for protocols such as SDLC and ModBus?

How do I use 9 data bit framing?

Can I use NI serial hardware with a non-Windows platform?

Can I use USB serial hardware, Ethernet serial hardware, and plug-in serial hardware in the same computer at the same time?