[Development] modbus over serial port on windows 7 ?

[Denis Shienkov]

Seems, this:

 > qt.modbus: (RTU server) QSerialPort error: 
QSerialPort::SerialPortError(ResourceError) "Операция ввода/вывода была 
прервана из-за завершения потока команд или по запросу приложения."

It is an 'ERROR_OPERATION_ABORTED', that can be caused by ::CancelIo() 
(e.g. when the serial port closes) or by a HW problems.

BR,

Denis


31.05.2016 12:23, Dmitry Shapovalov пишет:
> Thanks for reply Ralf. Email more preferable for me.
>
> Can you tell me what type of adapter you are using? Which version of 
> qtserialport are you using? Maybe my problem is related to the type of 
> serial port adapter. I tried use arduino with different usb-uart 
> chips(ch430 and pl2303), but unsuccessfully.
>
> Here is output of qt modbus master example
>
> Запускается 
> C:\Qt\Examples\Qt-5.6\qtserialbus\serialbus\modbus\build-master-Desktop_Qt_5_6_0_MinGW_32bit-Debug\debug\modbusmaster.exe...
> qt.modbus: (RTU client) Sent Serial PDU: 0x0400000001
> qt.modbus.lowlevel: (RTU client) Sent Serial ADU: 0x01040000000131ca
> qt.modbus: (RTU client) Send failed: 0x0400000001
> qt.modbus: (RTU server) QSerialPort error: 
> QSerialPort::SerialPortError(ResourceError) "Операция ввода/вывода 
> была прервана из-за завершения потока команд или по запросу приложения."
> qt.modbus.lowlevel: (RTU client) Response buffer: "01"
> qt.modbus: (RTU client) Modbus ADU not complete
> qt.modbus.lowlevel: (RTU client) Response buffer: "0104024c494c06"
> qt.modbus: (RTU client) Received ADU: "0104024c494c06"
> qt.modbus: (RTU client) Cannot match response with open request, ignoring
>
> Look like it actually sends request, but qtserialport reports error, 
> so qtserialbus(modbus) ignores response.
>
>
> 2016-05-31 11:59 GMT+05:00 Ralf Nolden <nolden at kde.org 
> <mailto:nolden at kde.org>>:
>
>     Am Dienstag, 31. Mai 2016, 09:34:19 schrieb Dmitry Shapovalov:
>     > Hello,
>     > can someone confirm that modbus over serial port is working on
>     windows ?
>     I have tested modbus over serial port on windows with two
>     Schneider Electric
>     PLCs, a Twido and a Premium, both with TCP and RS485. We could
>     evaluate your
>     problems on IRC if you want.
>
>
>     > all my experiments led me to the thought that it is absolutely
>     broken.
>     > i am using arduno as a modbus device. i tested it with qmodbus
>     and modbus
>     > poll. works great. but when i try to use modbus examples from
>     > qt(qtserialbus/examples/serialbus/modbus/master), look like it
>     can not send
>     > request.
>     > i tried release(5.6) and git version of qtserialbus and qtserialport
>     > modules with no luck.
>     >
>     > i am using windows 7 on virtualbox.
>     > arduino modbus library from here
>     > https://github.com/smarmengol/Modbus-Master-Slave-for-Arduino
>     > arduino sketch http://pastebin.com/FHW3B7TX
>     >
>     > it's me or it's really broken ?
>
>     --
>     Kind regards,
>
>     Ralf Nolden
>
>     _______________________________________________
>     Development mailing list
>     Development at qt-project.org <mailto:Development at qt-project.org>
>     http://lists.qt-project.org/mailman/listinfo/development
>
>
>
>
> -- 
> -- 
> With Best Regards
> Dmitry Shapovalov
>
>
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