Gurux DLMS for Python | for DLMS smart meters

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Description

Questions and comments about
Gurux DLMS/COSEM for Python Protocol Component.

By Uthuk3l@ , 2 September, 2026

Trying to talk to a L&G E360 meter (Using Python Gurux)

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Gurux DLMS for Python

I'm struggling to communicate with an L&G meter. I can share the code I'm using as well as the logs. I need help.

By eriktrif , 26 August, 2026

Generic Exception raised on HLS authentication failure instead of GXDLMSException

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Gurux DLMS for Python

GXDLMSClient.py:

Current code:
if not equals:
    raise Exception(
        "parseApplicationAssociationResponse failed. "
        + " Server to Client do not match."
    )

Should be:
# In GXDLMSClient.py imports:
from .GXDLMSException import GXDLMSException
from .enums import AssociationResult # (add to existing 'from .enums import ...')

By Kumaresh , 24 August, 2026

DLMS Image Transfer: “byte must be in range(0, 256)” with 512-byte block size in Python

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Gurux DLMS for Python

Hi Gurux Team,

I am facing an issue with FOTA Image Block Transfer in Gurux.DLMS Python.

The same meter and firmware FOTA work correctly using DLMS Director, but when I perform the same operation using the Python implementation, Image Transfer Initiate succeeds and Image Block Transfer fails with:

byte must be in range(0, 256)

The meter reports:

Image Block Size : 512 bytes
Image Transfer Enabled : True

Image Transfer Initiate (Method 1) is successful.

Gurux DLMS for Python