DLMS Data gateway communication with meters

By Harshi_554, 3 July, 2025
Forums
Gurux DLMS for ANSI C

Hiii

As per the dlms datagateway source , the gateway will communicate with the smart meter using serial port (HDLC) communication. Is it possible to communicate with the smart meters using TCP/IP (Wrapper) communication using ethernet?

Kurumi

4 months 3 weeks ago

Hi,

Yes, it's possible. You need just change interface type from HDLC to WRAPPER and establish the TCP/IP connection to the meter.

BR,
Mikko

Harshi_554

4 months 3 weeks ago

Hi ,
Thank you for the reply.

Where I need to do the required changes? Can you share the changes?

Kurumi

4 months 3 weeks ago

Hi,

You need to establish the TCP/IP connection to the meter in com_open.
Now it's using serial port. Then change
cl_init(&clientCon.settings, 1, 16, 1, DLMS_AUTHENTICATION_NONE, NULL, DLMS_INTERFACE_TYPE_HDLC);

to this:

cl_init(&clientCon.settings, 1, 16, 1, DLMS_AUTHENTICATION_NONE, NULL, DLMS_INTERFACE_TYPE_WRAPPER);

The used settings depend on your meter.

BR,
Mikko