Skip to main content
Home
for DLMS smart meters
Open source solutions for DLMS smart metering

Main navigation

  • Home
  • Products
  • About us
  • Open Source
  • Community
  • Forum
  • Downloads
User account menu
  • Log in

Breadcrumb

  1. Home
By zakaria.b , 10 August, 2026

Elster a1800 clock reset to year 2000 with one tariff billing

Forums
Gurux.DLMS

Hi to all,
We are managing an AMI project and we designed with our provider an external modem than can connect to different existing meters, including elster A1800. The modem is powered with external 220v source and connected to the elster meter through the rs485 port. The meter has been configured to enable the connection with the modem and the dlms protocol has been activated also to support data collection from our HES.

By Dmitry , 4 August, 2026

Possible memory leak in file dlms.c, getCompactArrayItem(), getCompactArrayItem2()

Forums
Gurux.DLMS

Hi, Mikko

1. In getCompactArrayItem() use only gxfree(value); but i think need use:
var_clear(value);
gxfree(value);

like in function getCompactArrayItem2().

2. In getCompactArrayItem2():
if (tmp->Arr == NULL)
{
//here need gxfree(tmp); because in row 1637: dlmsVARIANT* tmp = gxmalloc(sizeof(dlmsVARIANT));
return DLMS_ERROR_CODE_OUTOFMEMORY;
}

Please, check it.

Thanks!

By utkarsh9460 , 4 August, 2026

Official Gurux.DLMS.Client.Example.Net fails during High GMAC secure association (Invalid PDU), while Gurux Director connects successfully

Forums
Gurux.Net

Hello Gurux Team,

I am using the latest official Gurux.DLMS.Client.Example.Net to communicate with a DLMS meter over a serial (HDLC) connection.

Environment
Gurux.DLMS : 9.0.2605.2801
Gurux.Common : 8.4.2503.602
Gurux.Serial : 8.4.2503.603
.NET Framework : 4.7.2
Communication : Serial (HDLC)
Meter Configuration
Interface Type : HDLC
Referencing : Logical Name (LN)
Authentication : HighGMAC
Security : AuthenticationEncryption
Security Suite : Suite0

By Kumaresh , 3 August, 2026

gurux_dlms.GXDateTime.GXDateTime object Error in Python

Forums
General discussion

Hi, GX Team,
pls help us to fix this issue while reading the Time from Python Code:-

By MrTABAK , 2 August, 2026

T_APPL_DATA_LN_N1 subtest 3 fails on an LN-only server regardless of the response to a non-existing-object GET

Forums
DLMSDirector

I'm testing an embedded LN-only DLMS/COSEM server with the GXDLMSDirector Application Conformance Test. 13 of 14 tests pass; the only failing one is T_APPL_DATA_LN_N1, and it always fails on subtest 3 ("Read non-existing object").

The tool sends a GET for a non-existing object (class 15 / Association LN,
OBIS FF FF FF FF FF FF, attribute 1):

C0 01 C1 00 0F FF FF FF FF FF FF 01 00

The overall result is always:

T_APPL_DATA_LN_N1 subtest 3 succeeded when Short Name referencing is used.
T_APPL_DATA_LN_N1 failed.

By utkarsh9460 , 30 July, 2026

Version mismatch between Gurux.DLMS 9.x and Gurux.Common/Gurux.Serial 8.x

Forums
Gurux.Net

Hello Gurux Team,

I am developing a new Windows Forms (.NET Framework 4.7.2) DLMS client using the latest Gurux.DLMS.

My installed packages are:

Gurux.DLMS: 9.0.2605.2801
Gurux.Common: 8.4.2503.602
Gurux.Serial: 8.4.2503.603

I downloaded the latest Gurux.DLMS.Client.Example.Net from GitHub (Version 9.0.2605.2801), and GXDLMSReader.cs references:

using Gurux.Net;

However, I cannot find matching 9.x NuGet packages for Gurux.Common, Gurux.Serial, or Gurux.Net. Only 8.x versions are available.

Could you please clarify:

By Administrator , 27 July, 2026

fix: CGXDLMSProfileGeneric capture objects memory leak

Project
gurux.dlms.cpp
Status
Closed (fixed)
Priority
Normal
Category
Bug report
By Administrator , 27 July, 2026

gurux.dlms.cpp 9.0.2607.2701

The following important issues are resolved in this version:
fix: Pre-established glo-ded connection handling fixed to server
fix: CGXDLMSProfileGeneric capture objects memory leak

By Administrator , 27 July, 2026

fix: Pre-established glo-ded connection handling fixed to server

Project
gurux.dlms.cpp
Status
Closed (fixed)
Priority
Normal
Category
Bug report
By Harshi_554 , 24 July, 2026

Service not known error on gprs communication

Forums
Gurux.Net

Hi,
I am trying to communicate with a smart meter over GPRS communication. I am using Gurux.DLMS.Push.Listener.Example.python to read the data from the meter. But I am getting below errors:

Pagination

  • Page 1
  • Page 2
  • Page 3
  • Page 4
  • Page 5
  • Page 6
  • Page 7
  • Page 8
  • Page 9
  • …
  • Next page
  • Last page
  • Create new account
  • Reset your password

Hire Us!

Latest Releases

  • Mon, 07/27/2026 - 12:37
    gurux.dlms.cpp 9.0.2607.2701
  • Thu, 07/23/2026 - 16:19
    gurux.dlms.java 4.0.96
  • Thu, 07/09/2026 - 14:34
    Gurux.DLMS.Python 1.0.201
  • Fri, 06/26/2026 - 16:32
    Gurux.Service 3.0.2606.2601
  • Wed, 06/24/2026 - 08:36
    Gurux.DLMS.Python 1.0.200

New forum topics

  • Elster a1800 clock reset to year 2000 with one tariff billing
  • Possible memory leak in file dlms.c, getCompactArrayItem(), getCompactArrayItem2()
  • Official Gurux.DLMS.Client.Example.Net fails during High GMAC secure association (Invalid PDU), while Gurux Director connects successfully
  • gurux_dlms.GXDateTime.GXDateTime object Error in Python
  • T_APPL_DATA_LN_N1 subtest 3 fails on an LN-only server regardless of the response to a non-existing-object GET
More
RSS feed
Privacy FAQ GXDN Issues Contact
Follow Gurux on Twitter Follow Gurux on Linkedin