DLMS frame packet bytes

BlockCipher key: 66 51 64 51 0C 73 71 16 70 10 3B 41 28 07 04 4D
Authentication Key:66 51 64 51 0C 73 71 16 70 10 3B 41 28 07 04 4D
1: 00 01 00 01 00 01 00 20 C8 1E 30 00 00 00 4A AE 9E 40 B8 DE 9B 88 ED 01 D5 82 37 3B FC 0B ED 98 FA 36 68 88 EF 0A C5 EC
<WRAPPER len="20" >
<SourceAddress Value="1" />
<TargetAddress Value="1" />
<PDU>
<!-- Invocation Counter: 74 -->
<!-- Decrypt data: C0 01 C1 00 01 00 00 60 01 0A FF 02 00
<GetRequest>
<GetRequestNormal>
# Priority: High, ServiceClass: Confirmed, Invoke ID: 1
<InvokeIdAndPriority Value="C1" />
<AttributeDescriptor>
# Data
<ClassId Value="0001" />
# 0.0.96.1.10.255
<InstanceId Value="000060010AFF" />
# Value
<AttributeId Value="02" />
</AttributeDescriptor>
</GetRequestNormal>
</GetRequest>
-->
<glo_GetRequest Value="300000004AAE9E40B8DE9B88ED01D582373BFC0BED98FA366888EF0AC5EC" />
</PDU>
</WRAPPER>

Hi Mikko,

you are right it is 0xDB.

How can I change to "General GLO ciphering" for those particular meterSit meters (meterSit UDP - CompactFrame 91)?

What it is happening is that Public connection works great and I can retrieve data like LDN, ecc....
On the Private it seems to be connecting (no errors and no time out given) but whatever I ask to the meter it comes back with "Undefined Object".

I don't want to break the system as it is working fine for the rest of the meters: Honeywell UDP - CompactFrame, meterSit old models TCP - NO compact frame.

This is my code:

client = new GXDLMSSecureClient(....);

//HLS (High Level Security)
client.Ciphering.SystemTitle = Encoding.ASCII.GetBytes(objMeter.ClientSystemTitle);
client.ServerSystemTitle = GXCommon.HexToBytes(objMeter.ServerSystemTitle);

client.Ciphering.BlockCipherKey = GXCommon.HexToBytes(objMeter.BlockCipherKey);
client.Ciphering.AuthenticationKey = GXCommon.HexToBytes(objMeter.AuthenticationKey);

client.Ciphering.InvocationCounter = InvocationCounter;
client.Ciphering.Security = (Security)objMeter.Security;

reader = new GXDLMSReader(....)

Many Thanks

Amazing you are truly a master!

Managed to get MP Id and LDN on Private! (now getting "Access Error : Device reports Read-Write denied." when trying to get readings from Profile Generic but not really important right now)

I am going to read more about ProposedConformance and Conformance.GeneralProtection

Thank you very much again

Hi Mikko,

trying to find a fix for the Profile Generic. I added a comment on an old post as it sounds more relevant:

https://www.gurux.fi/forum/6310#comment-27413

Thanks