I'm building a DLMS/COSEM client on Android using custom USB serial communication (no GXSerial/GXMedia). I send an SNRM request and receive a UA response that starts and ends with 0x7E, but the Gurux Java parser treats it as malformed.

Works:
Genus and Landis+Gyr meters: UA parsed correctly.

Fails:
HPL and L&T meters: UA response appears malformed.

The same configuration (client address, baud rate, etc.) works fine in the Gurux DLMS demo app.

For single metering manufacturing company should same logical device name for all meters or different. as stated in blue book in clause no. 4.1.8.2 that

Each COSEM logical device can be identified by its unique COSEM LDN. The LDN is defined. as a string of up to 16 octets.
i am mentioning example in both way that which one is correct.

condition 1:-

METER METER SR. NO. LOGICAL DEVICE NAME

Hi,

I’m using GXSerial (USB) without GXMedia to read DLMS meter data. During Association Response, I receive all OBIS codes in one large response frame, like this:

I have successfully established the Bluetooth connection and completed both the SNRM and AARQ stages. However, during the Association View phase, I'm facing an issue where the full HDLC response is not being received consistently. Despite requesting the maximum MTU size of 517, the response often gets truncated.

For example, sometimes the Association View responses complete up to the 9th continuation request, while at other times, it stops at the 3rd or 4th request, resulting in an incomplete frame and a parsing failure.

i am using gurux android project where not able to connect with the usb prob
prob details given below

man info:Silicon Labs:CP2102
USB to UART bridge controller
chipset:CP21XX
serial:0001
Boud rate:9600
data bits:8
parity :none
stop bits :1

Hi,

when I am trying to communicate with the meter, I am facing issue at 7th transmission I am getting error code response from the meter as read write denied.

could you assist with this issue.

Regards
Supritha K P

Hi,

I read the association.
Object 0.0.96.1.19.255 has access

"<Access>13</Access>".

Director display in filed Access - "NoAccess".
Before read this attribute I use a condition

if (_client.CanRead(obj, index))

that returns - true.

Feld "Access" of this attribute has a value "ReadWrite"
Feld "Access3" of this attribute has a value "NoAccess" and this is correct.

Please tell me how to make it return the value "NoAccess"?

Thanks.

Hi Mikko Sir,

I was looking through the forums and read some, but I'm still not sure if it is possbile to connect to DLMS Smart Meters and read data through bluetooth using the android app: https://github.com/Gurux/Gurux.DLMS.Android

Please provide some reference guides and a path on how can I implement such thing in my app, it is already reading data through HDLC interface using UART cable.

Thanks,
Kshitiz