[Development] modbus over serial port on windows 7 ?

[Dmitry Shapovalov]

Yep. That's right. It is ERROR_OPERATION_ABORTED.
But why ? Any other application works as expected with this hardware.

And i confirm that 0x01040000000131ca and 0x0104024c494c06 are correct
request and response.


2016-05-31 15:05 GMT+05:00 Denis Shienkov <denis.shienkov at gmail.com>:

> 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>:
>
>> 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
>> http://lists.qt-project.org/mailman/listinfo/development
>>
>
>
>
> --
> --
> With Best Regards
> Dmitry Shapovalov
>
>
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-- 
--
With Best Regards
Dmitry Shapovalov
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