Hello Mikko,

How should I fill in 'day of week' value in Daylight savings begin/end fields, clock object?

As written in blue book "4.1.6.1 date and time formats examples":

"2) year = 0xFFFF, month =0x FF, dayOfMonth = 0xFE, dayofWeek = 0x07: last Sunday in every year and month;"

so where should I use "7" value in that field?

Best regards, Andrew

Hello Mikko,

I have a few doubts regarding communication with energy meters over Bluetooth. Specifically, I would like to understand:

When we say that an energy meter supports Bluetooth communication, does it mean that the meter comes with built-in Bluetooth capability?

Or do we need to externally connect a Bluetooth module to the meter in order to enable Bluetooth-based communication?

I would appreciate it if someone could clarify this for me, especially in the context of commonly used smart energy meters.

Thank you in advance!

Hello,

I’m working on a Java project using the Gurux DLMS library to certify DLMS/COSEM communication with the IM300 meter from WASION.
I’ve managed to establish the physical connection to the meter (via serial/TCP), but I’m facing issues during the authentication process. Specifically, I’m encountering errors in the second step of the communication, during the AARQ request (Application Association Request), where the meter should reply with an AARE (Association Response).

Below are the authentication parameters provided by the manufacturer to assist with configuration:

in android project profile buffer in billing profile
if i select from date and to date the buffer details is not coming

Unable to read attribute =3 (1.0.94.91.0.255) IC=7 for Indian Metering, while I'm able to read attribute 3 for other Profile generic class

I'm using python lib.

Code:
inst_obj = GXDLMSProfileGeneric("1.0.94.91.0.255")
read_inst_profile = b''.join(secure_client.read(inst_obj, 3))
print("\n→ Read inst buffer:", read_inst_profile.hex())
ser.write(read_inst_profile)