Unexpected end of VI after the acceptance of 3 lines of values from a serial port, transmitting continuous data.

Hello

I am currently working on the acquisition of data from a unit of 2 balls of hair, installed with a Zilla controller on an electric vehicle. Hairballs allows other devices to the device through a serial port. The option of data acquisition for displays information like speed, tension etc.

I use Teraterm, a terminal Communicator to start communication with the device of hairballs. After having sailed in the various menus, I can access the DAQ feature that provides data continuously to the status of the various components of the vehicle. I saved the logfile of teraterm (Teraterm - Results.txt). 5B 01 0b C8 03 53 02 39 27 OMFS is, for example, a sample of data from the module of data acquisition.

When the port is configured to send these data, I close the program Teraterm and run the LabVIEW VI (read and Write.vi series). It accepts 2-3 rows of data (error LabVIEW - 2.jpg In Motion) and then stops. I know there is a message of error involved, but I think that its storage in what concerns the information in the file (this is another problem, I need to resolve, the file is always empty).

Could someone help me with this problem please. Why the software ends the execution after only 2-3 loops. Sometimes he starts to accept data from the middle (@ 1 0b C8 03 53 02 39 27 OMFS for example) and stops after displaying the it.

If there is information required please let me know.

Thanks in advance.

The error you get is:

1073807252 VI_ERROR_ASRL_OVERRUN A time-out error occurred during the transfer. A character not read in the material before the arrival of the next character.

Your buffer is probably full of data.

See here and here for possible solutions.

Tags: NI Software

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