Hi,

I am trying to enable/disable HLS security on E360 meter from Landis. I am having troubles with how to generate correct frame for GXDLMSAssociationLogicalName object. I am trying to write "AuthenticationMechanismName" (attribute 6) to the meter but I would need to encode it not as a struct but as an octet string, could you help me with that?

This is an output frame that I am currently getting:
C104C102000F0000280002FF0600004000002B0000FF0200020207110211101202F411051108110211011600

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?

Hi,
I connected the CM-LTE-3 modem to the PC through RS485-USB converter. I set Gurux with the parameters:
-Iskraemeco
-HDLC
-Authentication none
-Client Address 46 (30+16)
-Logical Name Referecing on
-Physical Server 11
-Logical Server 1
-Serial COM4 9600 8N1
-DLMS standards
But the MT880 doesn't answer me. "Failed to receive reply from the device in given time".

Hi,

I use the settings:

Max payload size - 125

Packet SNRM with address size 1:

7E A0 1F 02 21 61 93 FF 13 81 80 12 05 01 7D 06 01 7D 07 04 00 00 00 01 08 04 00 00 00 01 89 E1 7E

Packet SNRM with address size 2:

7E A0 1F 02 21 61 93 FF 13 81 80 12 05 01 7D 06 01 7D 07 04 00 00 00 01 08 04 00 00 00 01 89 E1 7E

As far as I understand, the address with a size of 1 should be different, but here the packets are the same.

Getting error like this,
C:\Users\COMP\Downloads\gurux.dlms.java-master\gurux.dlms.client.example.java>java -jar target\gurux.dlms.client.example.java-0.0.1-SNAPSHOT.jar -S COM4:115200:8NoneOne -i WRAPPER -c 48 -a High -P ABCDEFGH12345678 -C AuthenticationEncryption -T 4C54434C49454E54 -A 31323334353637383930313233343536 -B 31323334353637383930313233343536 -v 0.0.43.1.3.255 -d India -t Verbose
WARNING: A restricted method in java.lang.System has been called

In GXDLMSDirector, I was able to successfully read data without explicitly setting the baud rate. However, in the Android application, selecting a baud rate is mandatory — there's no option to leave it unset. Even after selecting the same baud rate as used in GXDLMSDirector, the Android app fails to retrieve any data.

hello,

I am trying to read ProfileGeneric - Meter Block Load Profile 1.0.99.1.0.255 using DLMS C library. I get Not enough memory available.

com_read --> com_readDataBlock --> readDLMSPacket --> cl_getData

this is the flow and cl_getData stating above "not enough memory "error.

TRACE for your reference sir, ----------------------------------------------------

When using GXDLMSSecureClient with the HDLC interface, the clientAddress set in the settings object (client.settings.clientAddress) is incorrectly ignored during the generation of the HDLC SNRM frame if and only if a Security level other than Security.NONE is configured via client.ciphering.security.
If client.ciphering.security is left as Security.NONE, the HDLC source address is generated correctly based on settings.clientAddress.