cann't communcate with my serial port device?

[Aneece]

I am connecting E-753 controller of the Physik Instrument to controll the nanopositioning piezo stage through RS232 serial port, when  I communicate with the device using the interface that it comes with it is ok, but I couldn't manage to configure it through the MAE nor labview, when i tried to use Visa test panel I always receive return status  BFFF0015.

Please any help

Thanks

Aneece

[Dennis_Knutson]

You will get a timeout for any number of reasons. You could have the incorrect cable, mismatched com settings between the pc and instrument, or you are sending an incorrect command. Since the provided software works, we can eliminate an incorrect cable. Double check the com settings that you are using in MAX and in LabVIEW. You have not provided any details on the commands you are trying to write so make sure the command is listed in the manual and that you are appending the correct termination character. Use a \n for a LF (LF) or \r for a CR (carriage return).

[Aneece]

Thanks a lot for your assistance, I check already the boude rate and all setting, I tried visa write to send a command and when i excute i am getting return status 0, when i try visa read i get the error of timeout. i am following the commands that stated in the manual but i did not appended any thing to the command , e.g. i send POS? to read the position of the stage.

there is a command by default will come out when you open visa test pannel which is Identification *IDN?\n, i tried this also and i am getting the same result.

[Aneece · Accepted solution]

Thanks it is solved, it was due to a setting, now I tried to write and read using labview, so i couldn't manage to communicate, for the visa resource i wire only the port # COM1, shall I need to do the serial setting in order to get in through. please advice

[Dennis_Knutson]

If your serial settings are exactly the same as the defaults in MAX, then setting them in your program is optional but recomended to use the VISA Configure Serial Port. Look at one of the examples (Help>Find Examples).

Message Edited by Dennis Knutson on 04-06-2009 08:02 AM

[Aneece]

Hi Dennis,

I have already tried with Labview to communicate with the device with same as the defaults in MAX, but still cannot read, writing OK but reading error will be comming out. please advice

in additional, could you please click Here to go through it, your assistance will be highly appreciated

Thanks

Aneece

[Dennis_Knutson]

I'm confused. You marked the question as solved. Are you or aren't you able to communicate to the instrument? If you are, what are you using to communicate? If it just fails LabVIEW, then what are you using there? One of the examples or code you wrote yourself? If it's new code, please attach it - the actual code and not an image. It may be a simple matter of you not sending the correct termination character.

Also, just because you don't get an error on a VISA Write, it does not mean that the writing is OK. You will seldom get an error on a write because there are few things that will actually cause an error. Sending something completely invalid to an instrument will not cause an error.

Message Edited by Dennis Knutson on 04-10-2009 11:38 AM

[Aneece]

Sorry to trouble you, it is solved with MAX, but not Labview, I was thinking no problem since MAX can communicate with the device, I have done the same setting in MAX with Labview but still getting error, i don't know how to attach file because no icon for attachment , please advice

Thanks

[Dennis_Knutson]

Right below the message body is 'Add Attachments'.

It sounds like you might not be sending the correct termination character. You need to right click on the string control/indicator and select '\' Codes display if you want to send a \r or \n.

[Aneece]

Thanks Dennis, I assume that I am sending the correct termination character, please check my setting as it is in my attachment.