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No. 1313 Re: Re: EZL-70(A) abort his work after sending 8192 bytes. 2015-01-07

Hi,

my situation is the following: On "Windows 7 Professional", I use two terminal programms on both ends (com5 and com10).
Com5 is a virtual com port created by your ezVSP software. Com10 is the EZL-70(A).
I am using this code to produce the error:

void MainWindow::writeBlock()
{
QByteArray data;
unsigned char c;
c = 'A';

if (serial->isOpen()) {
for (int i = 0; i < 59; i++ ) {
data.append(c);
c++;
}
data.append('
');
for (int i = 0; i < 1000; i++ ) {
if (serial->write(data)<0) {
QMessageBox::about(this,"Error" ,serial->errorString());
}
}
}
}


The direction com10 to com5 works fine. Only the way from com5 (virtual com port) to com10 is wrong.
Please open the screenshot. The ABC... at the 8193 char has overwritten the abc.. !

After further investigation I have found the following:

1) With ezVSP 4.0 D the transmission stops after 8192 bytes.
2) With ezVSP 4.1 B the transmission will be modified as you can see in the screenshot.
3) With a 0-modem cable between com5 and com10 everything is fine. (Using the same USB to RS232 dongles and the same testsoftware ).

Please try to reprodruce this with ezVSP 4.1B.

Thanks in advance.

Regards
Joerg


> Sollae Systems wrote:
> ------------------------------------
> Hi.
>
> Unfortunately, we could not find any data loss with the same condition of yours.
> We tried to send 16,384 bytes data to both socket and serial sides at the same time.
> Can you give us more specific information about your situation?
>
> Thanks in advance.
>
> > Joerg wrote:
> > ------------------------------------
> > Hello Support!
> >
> > We are using a EZL-70 (A) with the firmware version 1.2E, 9600 baud, 8E1, "Tx Delay" is on, "Disable TCP Transmission Delay" is on as a "TCP Server".
> >
> > Whenever I send more than 8192 characters stops the transmission.
> > The rest of the data will be lost. In the most cases, I can continue
> > by sending the message again.
> >
> > Is there a new firmware to solve the problem?
> >
> > Regards,
> > Joerg
Attachment 20150107_ezVSP_4_1_B.png
Writer Joerg Company EKS