Domoticz

P1 Smart Meter with LAN give me CRC error
P1 Smart Meter with USB works OK.

Same data are sent.

Anyone noticed the same problem ?

No problems here. Also device could be a cause..

Using it for years on various locations and with various hardware.
No issues.

What hardware are you using?

Domoticz 2023.2
Raspberry Pi 2 Model B Rev 1.1
ARMv7 Processor rev 5 (v7l)

Also tested on Raspberry Pi 3 Model B Rev 1.2 with the same problem (Domoticz 2023.2)
ARMv7 Processor rev 4 (v7l)

BR Gunnar

How do you go from USB to LAN? With sernet? Check this page https://www.domoticz.com/wiki/SharingSerialDevices

Hi !

I receive HanPort data with a raspbery pico and use a utelentserver sending data to LAN address and port.
I have tried different version line by line or buffered the hole package and send it.

Instead of use domoticz I let putty (or netcat) to recive the data and calculate the CRC and got a correct result.

I have also tried domoticz 2024.6 still with error.

Note: All P1 devices are updated ok with CRC check disabled


Using the USB inderface either with serial/USB or /dev/serial0 everything works ok with CRC check.

(P1 Meter is pre DSMR 4.0 - using DSMR 2.2 compatibility)

BR Gunnar

uabgls wrote: ↑Thursday 11 July 2024 19:20
(P1 Meter is pre DSMR 4.0 - using DSMR 2.2 compatibility)

This comment puzzles me. The older message formats do not send a CRC and the log line you quoted here is because they also do not send any version info which causes domoticz to disable some features, including the CRC check.

Thus if after switching from USB to LAN domoticz fails to process the P1 data because of a wrong CRC, then you must have changed the original content to at least include a line that specifies a version >=4.0

Back on the road again !

Sorry, but the problem was the dummy data a used from a file that contain a faulty CRC.

Thank's for posted response !

BR Gunnar