Hello Mikko,

do you have example how to use Gurux.DLMS C++ library with GMAC authentication ? I need to set authentication and encryption key. I dont know how.

There is problem with SHA-256 authentication mode in Gurux.DLMS.cpp library. If you see method CGXSecure::Secure input data for hash are incorrectly calculated. IEC 62056-5-3 says that in Pass 3 authentication data should be calculated as follows:

SHA-256 (HLS_Secret || SystemTitle-C || SystemTitle-S || StoC || CtoS).

You are calculating hash as follows:
SHA-256 (StoC || HLS Secret)

I am using l&T ER300p meter. Its gives dlms data through RS232.
Connection between rj11 to DB9 as given link https://www.pinterest.fr/pin/461056080577439131/
When I am run this command.
python main.py -S /dev/ttyUSB0

Its gives an error.....

Hi
i am using c library gurux,
i need to know how to change 'settings->cipher->authenticationKey' by 'GXDLMSDirector.exe'
may i ask you some examples which is showing how to change 'cipher' by method 'action' through programming code and 'GXDLMSDirector.exe' ?
thanks a lot

Dear Mikko,

BE 34 04 32 21
30 //length
30 //sc-ae
00 00 00 03 //ic inovation counter

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 //apdu
93 E5 23 2C E1 54 85 A3 68 39 58 CE

Hi,

I'm trying to decrypt a Compact Frame received as push (Wrapped) but when I use client.GetData(trama, rd, new GXReplyData()), it returns always false.

I'm seeing in "ret = GXDLMS.GetData(Settings, reply, data, notify, this);" it returns the decrypted frame in "notify" argument (frame decrypted is correctly) but "data" argument is empty and then return false.

where is the mistake?

Best Regards

Hello Mikko
I'm interested in experimenting with DLMS/COSEM protocol I'm using Gurux.DLMS.Python example for readout data from meter

Hello,

I am trying to communicate Apex 150 Energy Meter over TCP with ANSI C stack; I am getting below error In getting association view
GetObjects failed Not enough memory available.

Whereas with same settings DLMS Director is able to read.
What else I have to do to make it work ?

Hi,

I am new to gurux DLMS library and already i have downloaded gurux DLMS library.
Could you please share any document for how to use gurux DLMS library.