topic Re: USB-8451 in LabVIEW

USB-8451

pavan007 — Fri, 18 Sep 2020 20:42:12 GMT

Hi, is there any standard GUI to test USB-8451 is working or not?

Re: USB-8451

Gregory — Fri, 18 Sep 2020 23:26:55 GMT

You can open NI MAX, select your device, and open a "Test Panel" if the option exists.

Re: USB-8451

pavan007 — Mon, 21 Sep 2020 17:40:11 GMT

computer detects the device, but don't see any option to open Test panel.

is there any option to find test panel?

if computer detects the device, that means device is GOOD?

Re: USB-8451

Gregory — Mon, 21 Sep 2020 18:06:53 GMT

Not necessarily, you should be able to run a self-test on the device. If you don't see the self-test or test panels options then you probably need to update / install NI DAQmx drivers.

Re: USB-8451

crossrulz — Mon, 21 Sep 2020 18:50:30 GMT

@Gregory wrote:
Not necessarily, you should be able to run a self-test on the device. If you don't see the self-test or test panels options then you probably need to update / install NI DAQmx drivers.

The USB-845x devices are NOT DAQmx. They have their own driver because they are for something completely different than DAQ (SPI and I2C communication). And there is no built-in test panel that I have been able to find. I don't blame NI for this since there are A LOT of different ways I2C is even interpreted (registers or no registers, 16-bit vs. 8-bit, etc.)

Re: USB-8451

Gregory — Mon, 21 Sep 2020 20:33:29 GMT

Thank you for the correct crossrulz, this is what happens when I assume...

Re: USB-8451

pavan007 — Tue, 22 Sep 2020 20:56:15 GMT

Thanks Crossrulz,

I have one question instead of USB-8451, what other devices I can use for SPI and I2C communication.

Thanks.

Re: USB-8451

GerdW — Wed, 23 Sep 2020 07:28:35 GMT

Hi pavan,

you can use the NI8452 instead.

Or a simple Arduino will do the SPI/I²C communication while communicating with LabVIEW using its virtual COM port…

Re: USB-8451

crossrulz — Wed, 23 Sep 2020 11:09:55 GMT

I have done some messing around with a NXP SC18IM700 to do I2C using a serial port. It uses a TTL UART, so some additional circuitry is needed to convert the RS-232 port on your computer to the TTL levels.

But I will probably go with an Arduino or RaspberryPi next time I might need one of these. It will be easier than getting a custom board built.

Re: USB-8451

pavan007 — Wed, 23 Sep 2020 12:30:51 GMT

is there any particular board you can suggest me from Arduino group for SPI/I2C communication ?

Re: USB-8451

pavan007 — Wed, 23 Sep 2020 12:33:47 GMT

or, can you suggest me particular model from raspberry Pi which can be used for SPI/I2C communication ? I feel Raspberry pi is simple and easy to use.

Re: USB-8451

GerdW — Wed, 23 Sep 2020 12:36:04 GMT

Hi pavan,

AFAIK even the cheapest Arduinos support SPI & I²C…

(See this German Wikipedia article listing hardware capabilities.)

Re: USB-8451

pavan007 — Wed, 23 Sep 2020 18:00:51 GMT

I am trying to run .exe file in my system, I am getting this message, does anyone know what this message ?

Re: USB-8451

GerdW — Wed, 23 Sep 2020 18:06:54 GMT

Hi pavan,

your executable is missing the correct RunTime engine: it needs the RTE from LabVIEW7.1.

The solution is also given in the message: contact the vendor of that software!

(How is this related to your NI8451 questions?)

Re: USB-8451

pavan007 — Wed, 23 Sep 2020 18:12:09 GMT

I am using NI USB-8451 for communication between product and computer.

X4094 is developed in our organization but very long back.

if I download labview 7.1 RTE , will it work?

Re: USB-8451

GerdW — Wed, 23 Sep 2020 18:46:35 GMT

Hi pavan,

@pavan007 wrote:

if I download labview 7.1 RTE , will it work?

Maybe yes. Maybe not, if other drivers are missing.

@pavan007 wrote:

X4094 is developed in our organization but very long back.

Get the installer from your internal servers. Or even install LabVIEW7.1, maybe in a VM…

Re: USB-8451

crossrulz — Wed, 23 Sep 2020 19:05:31 GMT

@GerdW wrote:

Hi pavan,

@pavan007 wrote:

if I download labview 7.1 RTE , will it work?

Maybe yes. Maybe not, if other drivers are missing.

You will also need a pretty old version of the driver (assuming the USB-8451 was around then).