DLMS Python - How to work with DCU?

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By nhzq , 6 July, 2022
Forums
Gurux.DLMS

Hi,

Before this, I manage to get reading from meters thanks to this awesome package. But now, I got a problem to connect to DCU.

For direct reading from meter, I just ran this command and it worked.
- python main.py -h 183.xxx.xx.xxx -P xxx -p 5000 -a Low -t Verbose -r ln -c 20 -s 255

But, when I tried with DCU, it returned error which I could not figure it out.
- "No connection could be made because the target machine actively refused it"

Do you have any examples that could help me to get reading from meters via DCU?

Thanks

Kurumi

4 years ago

Hi,

This error is TCP/IP error and it means that your IP address or port is wrong.
Check those from the DCU documentation.

BR,
Mikko

nhzq

4 years ago

Hi,

I have checked, both IP address and port are correct. I found that the message sent by gurux app is a bit different with what has written in DCU docs and it showed error like this - Access Error : Device reports Read-Write denied.

Command used:
python main.py -h 183.xxx.xx.xxx -P xxxxxxxx -p 5000 -a Low -t Verbose -r ln -c 1 -i WRAPPER

From docs:
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

From system:
00 01 00 01 00 01 00 0D C0 01 C1 00 0F 00 00 28 00 00 FF 02 00

Could you please advise on this matter? Thanks