Dear Friends
I am working on a project aimed to build a DLMS/COSEM modem, to coonect multiple meters to an MDM server. The prototype modem is designed using SIM800 and STM32F103 microcontroller. Thanks to your great project, I have used your arduino project using stm32duino platform and PlatfomIO.
Unfortunately, I have several problems to change the server connection from HDLC to WRAPPER mode.

Hi Mikko,
We are facing image transfer through actionSchedule . image transfer not happening after given time.
if i try to read after given Activate time completed it throws Hardware fault error. and disconnecting the client.
please check the log
help me where is the problem.
13:21:38 Read object type ImageTransfer index: 2
TX: 7E A0 19 03 61 76 29 9A E6 E6 00 C0 01 C1 00 12 00 00 2C 00 00 FF 02 00 7B B1 7E
13:21:38
RX: 7E A0 15 61 03 96 03 0C E6 E7 00 C4 01 C1 00 06 00 00 00 C0 71 DE 7E

Hi Mikko,
while I am reading last days records through gurux it is working fine. But when i am trying through another client software(KALKI) it is not going read last days data.
I am attaching both Gurux and KALKI logs below.
Please help me where I am going wrong.(For both I am using Gurux Stack only).

Dear Sir,
in IEC HDLC setup, (class_id = 23, version = 0) what are the max_info_length_ transmit (fifth attribute ) and max_info_length_ receive (sixth attribute). It means transmit /received total length is HDLC frame (including 7E to 7E) total length or HDLC information field length.

Regards
K.Anand.

Hi Mikko,

I am reading from IS15959-2 meter and using libguruxdlmsc C Library.

Query: How to bypass com_getAssociationView() ?

Issue: After AARQ response, C library get meter info through com_getAssociationView(). In case I comment out that, than not getting expected value from oa_findByLN() API.

Can you please help me with this?

Hi,
image transfer through gurux dlmsDirector failed when I applied Secured connections(authentication&encryption) while login.
After clicked on update button few seconds later "Unacceptable frame" error came
with out keys(means Security connections as NONE) it is working fine.
Please help me where is the problem.

BR,
Ashok K

Hello Mikko,

We are attempting to implement the C code (GuruxDLMSClientExample). We have copied the development dir into the parent dir. On running the Makefile the compilation is shown to be successful and .o files are created in the obj folder as well. However, we get the following linker error:

Hi Mikko,

I want to read IS16444 meter using HDLC mode E interface on serial media.

How to read meter data using HDLC mode E ?

I have one meter of IS16444 version.

What is the following frame format and how it works ?
"/?" + deviceSerialNumber + "!\r\n"

Hi Mikko,

we are using android library. library works with non ciphered meter whereas with ciphered meter we are not getting response for assocation request. please correct the flow if we are doing mistake. attached tx and rx log along with code snippet.

Hi Mikko,

We are trying to download profilegeneric data from meter using ANSI C library. At point DLMS stack is getting struck at getCount function . Attached Tx and Rx log also the function call history.
For your information , meter is working with GuruxDLMSExplorer

Tx : 7E A0 07 03 41 93 5A 64 7E
Rx : 7E A0 20 41 03 73 3E 9D 81 80 14 05 02 02 26 06 02 00 9B 07 04 00 00 00 01 08 04 00 00 00 01 B6 DC 7E