By Fullerene, 20 April, 2025

How to decrypt RF433 data from/to DLMS Emeter?

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General discussion

Hello everybody!

I am trying to create wireless DLMS client for Nartis emeter, based on my own hardware (STM32 MCU & CMT2300A transceiver).

By logic analyser i can see all the traffic between remote control panel and meter, but I can't understand what kind of information is being transmitted. Most likely, encryption is used when transmitting data wirelessly.

Is there a description anywhere of exactly how data is encrypted during wireless exchange?

By Frank, 15 April, 2025

How to get UIValues

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Hi
is there a method to get the UIValue based on the actual
value read in the meter?

for example, I have a GXDLMSData that has a custom 
attributesettings that defines GXObisValueItem like 
for example:
GXObisValue Value is 1 and UIValue is Reset

right now I am manually matching them

GXDLMSAttributeSettings atbr = dataobj.Attributes[1]; 
if (atbr.Values.Count > 0) 
{ 
	foreach (GXObisValueItem val in atbr.Values) 
	{ 
		if (dataobj.Value != null &&
			int.TryParse(dataobj.Value.ToString(), out int parsedValue) &&
			val.Value == parsedValue)
By SARATH_FAWSTECH, 7 April, 2025

DLMS documentation

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hi,

iam working on an IoT project wich is using a microcontroller and optical probe. so i want to write the code for sending hex values to the meter and read the response and decode it. Iam looking for some documentation for DLMS which should have the hex commands and their functionality and details about how to decode the receiving data.

By vasil_gurux, 25 March, 2025

Porting my App to Linux

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Hi! I have complete working desktop app on win with gurux, and i'm thinkig about porting my app on linux.

Except new UI, what is the main steps, I need to do (or consider to do or do nothing) with Gurux libraries? Sorry, if my question little bit stupud or so) I'm new to such a task and linux.

Thanks in advance).

By Shekhar_HSL, 19 March, 2025

Need help finding out the correct dlms settings for this meter

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Hello.

I was trying to find out the correct setting for this below Honeywell gprs gas
meter using HDLC address resolver in GXDLMSDirector.

Meter image: https://ibb.co.com/35HSkMkj

But I failed to do so. When I try to scan the client and server addresses using optical port, meter doesn't reply with any response. Also, in the address resolver settings if I change the baud rate, stop byte etc., they don't change.

By manoj panchal, 28 January, 2025

segmented frame

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There is a doubt in segmented frame so you hopefully give response as i describe in below points.
1. Is there any relation between block response/request and segmented frame.

2. If meter buffer size is 2048 then only segmented frame possible ??? my meter buffer size is 512 so in this case how can be possible the segmented frame

By vtulyakov84, 16 January, 2025

Addressing the smart meter in the transmission medium

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Good afternoon, community!
Please tell me how can I address a smart meter in a transmission medium if they all have physical and logical addresses 1 and 16?
How can I access the smart meter by its MAC address, which consists of the last 9 digits of the smart meter's factory number?

~~~
BR,
vtulyakov84

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