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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:

By Administrator , 23 July, 2026

gurux.dlms.java 4.0.96

The following important issues are resolved in this version:
fix: ECDSA Client authentication verify

By Administrator , 23 July, 2026

fix: ECDSA Client authentication verify

Project
gurux.dlms.java
Status
Closed (fixed)
Priority
Normal
Category
Bug report
By Naman_Shandilya , 23 July, 2026

Help Needed: Interfacing Saral 100 Energy Meter with Microcontroller via RS232

Forums
Gurux.Serial

Hi everyone,

I am new to the DLMS and energy meter domain. I am working on interfacing a Saral 100 energy meter (Secure Meters) with my microcontroller over the RS232 protocol. I’ve received some initial details from the vendor, but I want to confirm what exact parameters and values are required from the manufacturer to ensure proper communication and data reading.

Here’s what I have so far:

Voltage Levels – RS232 standard voltage levels (3–5 V depending on signal type).

Serial Communication Settings – Baud rate: 9600 bps, Parity: None, Stop bits: 1.

By Frank , 20 July, 2026

Connecting Meter to Agent via serial

Forums
Gurux.DLMS.AMI

Hi,

I have tried to use the AMI4 and connected to a meter. the connection was via tcp and it worked.

Now im trying to connect to the meter via serial but i can't seem to initialized the serial connection to meter even with the correct serial parameters.

Do i need to make/use the scripts to connect to the meter? if so what does the script expect as an output and i am assuming that the script is in c#

Thank you very much for your support

By Jayaraj , 18 July, 2026

Reading block profile with Compact array

Forums
General discussion

Hi, am trying to read meter that supports compact array for load profile reading. I have following observation with Compact array.

- Whenever I read few entries that fit in single window, all works fine.
- Whenever I try reading more entries that triggers block transfer, director throws exception

By eriktrif , 17 July, 2026

Incorrect LastBlock handling in multi-block ActionRequest

Project
Gurux.DLMS.Python
Status
Active

multipleBlocks() in GXDLMS.py

Current code:
len_ += p.attributeDescriptor.size

Should be:
len_ += p.attributeDescriptor.available()

Reason:

For the second and following PDU blocks, attributeDescriptor has already been consumed in the first block.

At this point the buffer position is already at the end, so:
p.attributeDescriptor.available()
returns 0.

However:
p.attributeDescriptor.size
returns the full buffer size (9 bytes in this case), which incorrectly increases the calculated PDU length.

Because of this, for some boundary data sizes multipleBlocks() calculates an incorrect PDU size and the final block is generated with:
LastBlock = 0
instead of:
LastBlock = 1

This causes the receiver to wait for another block even though all data has already been transferred.

Priority
Normal
Category
Bug report

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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

  • Service not known error on gprs communication
  • Help Needed: Interfacing Saral 100 Energy Meter with Microcontroller via RS232
  • Connecting Meter to Agent via serial
  • Reading block profile with Compact array
  • DLMS server - serving multiple similar datasets gathered from multiple meters across distinct logical addresses
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