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By Evaldo, 10 July, 2025

Authentication issues (AARQ) with WASION IM300

Forums
Gurux DLMS for Java

Hello,

I’m working on a Java project using the Gurux DLMS library to certify DLMS/COSEM communication with the IM300 meter from WASION.
I’ve managed to establish the physical connection to the meter (via serial/TCP), but I’m facing issues during the authentication process. Specifically, I’m encountering errors in the second step of the communication, during the AARQ request (Application Association Request), where the meter should reply with an AARE (Association Response).

Below are the authentication parameters provided by the manufacturer to assist with configuration:

By Administrator, 9 July, 2025

Send the proposed maxPduSize instead of the negotiated size in the release.

Project
gurux.dlms.c
Status
Closed (fixed)
Priority
Normal
Category
Bug report
By atuldd, 9 July, 2025

Regarding the dlms android project

Forums
Gurux DLMS for Android

in android project profile buffer in billing profile
if i select from date and to date the buffer details is not coming

By Administrator, 9 July, 2025

Gurux.Serial.Android 2.0.13

The following important issues are resolved in this version:

Version changed to correct.

By Administrator, 9 July, 2025

Version changed to correct.

Project
Gurux.Serial.Android
Status
Closed (fixed)
Priority
Normal
Category
Bug report
By AnujNayak, 9 July, 2025

Unable to read attribute =3 (1.0.94.91.0.255) IC=7 for Indian Metering, while I'm able to read attribute 3 for other Profile generic class

Forums
Gurux.DLMS

Unable to read attribute =3 (1.0.94.91.0.255) IC=7 for Indian Metering, while I'm able to read attribute 3 for other Profile generic class

I'm using python lib.

Code:
inst_obj = GXDLMSProfileGeneric("1.0.94.91.0.255")
read_inst_profile = b''.join(secure_client.read(inst_obj, 3))
print("\n→ Read inst buffer:", read_inst_profile.hex())
ser.write(read_inst_profile)

By Administrator, 9 July, 2025

gurux.dlms.c 9.0.2507.0901

The following important issues are resolved in this version:
GX_GET_UINT32 issue fixed.
Send the proposed maxPduSize instead of the negotiated size in the release.

By Administrator, 9 July, 2025

GX_GET_UINT32 issue fixed.

Project
gurux.dlms.c
Status
Closed (fixed)
Priority
Normal
Category
Bug report
By Ankush, 8 July, 2025

Register Activation class (class_id = 9) attribute index 3 data is not visible

Forums
DLMSDirector

I have made a configuration on "Register Activation" class but attribute index data 3 is not visible on GxDLMS Director. Instead of data it is showing following system Generic list as

 System.Collections.Generic.List'1[System.Collections.Generic.
KeyValue2[System.Byte[].System.Byte[]]]

 System.Collections.Generic.List'1[System.Collections.Generic.
KeyValue2[System.Byte[].System.Byte[]]] 

Tariff log of all attribute index are (rest attribute index data is visible on GxDLMSDirector screen) as 1

By Danlew2018, 8 July, 2025

Load profile

Forums
General discussion

Hi,

Can someone explain in simple terms how reading load profile data works on an L+G E560 meter?

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Latest Releases

  • Wed, 07/09/2025 - 16:41
    Gurux.Serial.Android 2.0.13
  • Wed, 07/09/2025 - 12:07
    gurux.dlms.c 9.0.2507.0901
  • Sat, 07/05/2025 - 15:04
    Gurux.DLMS.Python 1.0.188
  • Tue, 07/01/2025 - 10:09
    Gurux.DLMS.Python 1.0.187
  • Tue, 07/01/2025 - 09:54
    gurux.dlms.c 9.0.2507.0101

New forum topics

  • Authentication issues (AARQ) with WASION IM300
  • Regarding the dlms android project
  • Unable to read attribute =3 (1.0.94.91.0.255) IC=7 for Indian Metering, while I'm able to read attribute 3 for other Profile generic class
  • Register Activation class (class_id = 9) attribute index 3 data is not visible
  • Load profile
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