bannerbar

Support > Technical Support

Q&A / Technical Support

Name	E-mail

Company Name

Subject

Contents
I have tested in various situations but I could not find any problem such as yours. In the condition that you described at the end of your last inquiry, I found "Simple Test" program stops his operation. After I killed the program and run it again, EZL-70 worked fine with it. I did not reboot EZL-70. Could you test it with another terminal program? I used "teraterm" for sending data on both direction. Sending 65536 bytes data on both direction was successfully transferred with the program. Thanks in advance. Best Regards, > Joerg wrote: > ------------------------------------ > Hello Support Team, > > thank you for the answer. I have checked the solutions, but nothing helps. Currently I am using RTS/CTS flow control and > "Emulation of Baudrate". I reduced the size of data to 16 bytes. > > Now I send the 16 chars from one end to the other. Only one side can send, the other side waits until the 16 chars has been > received. From my point of view the buffer should be empty after each conversation. > > My problem: The ELZ-70 stops his activity after 4000 till 250000 bytes. After reseting the EZL he works again. > > With a 0-modem cable, the conversation works fine and unlimited (>12 hours). > > You can test it with your own ezConfig, using the "Simple Test"! > Please connect the Lan and COM and send 500 bytes in each direction several times. > I tested this 5 times and I could not transfer more than 10000 bytes. > > Any ideas? > > Thanks in advance. > > Best Regards, > Joerg > > > Sollae Systems wrote: > > ------------------------------------ > > Thank you for your detailed information. > > > > This case seems to occur by buffer overflow of virtual COM port made by ezVSP. > > I faced a similar problem with virtual COM port. > > Here are solutions. > > 1. Enabling RTS/CTS flow control on the COM5. > > 2. Enabling [Emulation of Baudrate] option on the advanced menu of the virtual port setting. > > (I recommend using the latest version of ezVSP - 4.1B) > > > > You can avoid the data loss using at least one of solutions. > > > > Best Regards, > > > > > Joerg wrote: > > > ------------------------------------ > > > 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 = 'sA's; > > > > > > if (serial->isOpen()) { > > > for (int i = 0; i < 59; i++ ) { > > > data.append(c); > > > c++; > > > } > > > data.append('s> 's); > > > 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
Password

Attachment(Image, ZIP file under 2MB)