Search found 4 matches

by dexterppp
Tue Dec 08, 2015 9:16 pm
Forum: Developers Sandbox - Meter Data
Topic: How to use C++ read data in raspberry pi via RS-485 to USB
Replies: 3
Views: 7614

Re: How to use C++ read data in raspberry pi via RS-485 to USB

It looks like your meter is responding but your software is not interpreting what is coming back. I would take a look at this post, it includes some examples on github that read our meters using C++ code: http://forum.ekmmetering.com/viewtopic.php?f=4&t=5&start=30 "C++" must be the hardest keyword ...
by dexterppp
Mon Dec 07, 2015 11:52 pm
Forum: Developers Sandbox - Meter Data
Topic: Use python read meter but the return data length not equal to 255
Replies: 2
Views: 4797

Re: Use python read meter but the return data length not equal to 255

Hi Jameson, Thank you for your reply, I've understood your explain. Thank you very much. But the exactly my problem is in this post http://forum.ekmmetering.com/viewtopic.php?f=4&t=3474. My project would like to use C++ but Python is only for testing transferring data because the C++ code doesn't wo...
by dexterppp
Mon Dec 07, 2015 11:47 pm
Forum: Developers Sandbox - Meter Data
Topic: How to use C++ read data in raspberry pi via RS-485 to USB
Replies: 3
Views: 7614

How to use C++ read data in raspberry pi via RS-485 to USB

I've successfully read data from EKM metering by using Python as in http://forum.ekmmetering.com/viewtopic.php?f=4&t=3472 link. But before that I've tried to use C++ for a long time but it is unsuccessful. I follow this document http://www.chemie.fu-berlin.de/chemnet/use/info/libc/libc_12.html#SEC23...
by dexterppp
Mon Nov 30, 2015 5:40 am
Forum: Developers Sandbox - Meter Data
Topic: Use python read meter but the return data length not equal to 255
Replies: 2
Views: 4797

Use python read meter but the return data length not equal to 255

I have an EKM-OmniMeter (I v.3 Universal Smart Meter, Single Phase or 3-phase, 120 to 480V, 50/60Hz up to 5000 amps) installed. I write python code that run on Raspberry pi for read data from the meter but the output from them but the return data length not equal to 255 bytes, the result that I've r...