Iec 62056-21

[luca]

Hi all,
I need to communicate with a device via RS-485 that support iec 62056-21 protocol.

Does someone have tried this?

I need some documentation or c++ library to comunicate with this... :-)

[andre]

A quick Google search turns up a "reference":http://www.qtforum.org/article/31180/qextserialport-checking-that-data-has-been-sent-for-rs485-comms.html of somebody using QextSerialPort for a RS-485 device. So, that should work, I guess. That, of course, does not implement iec 62056-21 on top of that yet. Does that get you started? Note that I don't have personal experience with any of this :-)

[luca]

Thanks Andre,
I already know QextSerialPort and I have no problem in communicating via rs-485. My problem is to know iec 62056-21 .
Reading some manuals it seems that iec 62056-21 is a standard protocol but I can't find some documentation about.
I only found "this":http://www.satec-global.com/UserFiles/File/SATEC/files/Manuals/EM920/EM920 IEC 62056-21.pdf but it's for a specific device and I actually can't try that protocol for my device.

[andre]

Ah, ok. I think the details of iec 62056-21 are really outside the scope of Qt itself, and are off topic on this forum. Then again, perhaps that is why you posted this in The Lounge?

[luca]

[quote author="Andre" date="1301910029"]perhaps that is why you posted this in The Lounge?[/quote]

Yes, I posted here because of this. :-)