BLE communication and reading of current values (without association) work correctly on all meters.
DLMS association (SNRM + AARQ) over BLE works only with the LGZ meter — the meter responds to chunked requests, and we receive replies successfully.
However, on other meters, the same association flow over BLE (sending the association request in chunks) fails — we do not receive any response after sending the AARQ.
Over USB/serial (using the same authentication level LOW), all meters respond correctly to the association request.
We would like to know:
What could be the reason for the association failing over BLE on other meters?
Is there any specific BLE-related handling or configuration required in the Gurux library when sending association requests (especially in chunks)?
Hi, There is no BLE-related…
Hi,
There is no BLE-related handling for Gurux library. If you are not receiving a reply from the meter.
With some meters, you might need to add a small delay (e.g., 1000 ms) before sending AARQ.
You can also try to use WRAPPER if your BLE is integrated into the meter.
BR,
Mikko