problems with rs-232

Hello

first of all, I must say that I am new to Labview and so I would like to apologize in advance if my questions are too stupid! I have a problem with my thesis project.

I have to develop software for the acquisition of data from one account (METTLER TOLEDO BBA422) using the rs-232 serial port. I have to make the program wait for entry of the operator (he must press a button on the scale), and then the balance passes a string through the serial interface.

I tried to use the VISA to be able to read the data, but it seems impossible to read anything of the instrument; I used to set up, reading and close series loop of VISA within a certain time, but when I press keys nothing seems to happen.

The configuration seems to be ok (2400 baud, 8 bit, even 7, XONXOFF)

Do you have any suggestions?

Thanks in advance


Tags: NI Hardware

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