USB to Serial stops responding after using NI-MAX

[LeSaint]

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@Dennis_Knutson wrote:
Let's take one step back. Exactly what happens when you try to communicate with MAX? Please provide some details as saying 'doesn't work' is insufficient. What command? What error code/message?

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Timout expire

When I send a command, I don't get any answer. And I do believe that all my port setting are correct.

[Dennis_Knutson]

You aren't sending any termination character(s). Do you have a manual? Does it say to append a cr, lf, or both? Have you tried a program such as putty?

[LeSaint]

Doesn't need any termination character according to the manual.

Here is a screenshot send to me by the manufacturer that show that it's working there.

[Dennis_Knutson]

It's certainly returning cr/lf. I still recommend a third party program to see off the problem exists there.

[nyc_(is_out_of_here)]

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@Dennis_Knutson wrote:
It's certainly returning cr/lf. I still recommend a third party program to see off the problem exists there.

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The instrument is returning a CR/LF, but the write shows only just *VER.

[Dennis_Knutson]

I know but you can also use a VISA property to automatically append a termination character and this setting is not known. It's unusual for an instrument to respond with cr/lf and not need it for a read. I'm mostly curious about a communication program other than the vendor's and that does not use VISA.

[LeSaint]

From the manual:

USB & ETHERNET communication Bits per second	921600
Data bits	8
Parity	None
Stop bits	1
Flow control	None

In the HyperTerminal window type *VER, press  ENTER. If the response you receive tells you the version of your S-Link, you are successfully connected and ready for serial command action.

I did that, I didn't get any answer from the device.

[Dennis_Knutson]

That says a lot. Hyperterminal automatically appends a cr/lf. Since you don't get a response, that points to some problem with the device.

[LeSaint]

New development here.

I tried it on my personnal laptop and everything works great. Software, VISA, hypertem.

So the problem seems to be with the computers at work. I tried on three of them, on which I have admin rights, without any luck.

And the IT guys don't seem to have any clue...

Well...

[Dennis_Knutson]

You've never mentioned which os you are using. What is the ftdi version?