Using smart meter interface for power meter over P1 with Tasmota and MQTT,

[Eyvind Johansson]

I have managed to get a D1mini (ESP8266) to read the serial output from P1 port on my Sagemcom T211 power meter.

Using smart meter interface according to the instruction and example script found here 

https://tasmota.github.io/docs/Smart-Meter-Interface/

and the Web UI from the device shows accurate reading with Unit of measurement, but the sensor that is auto discovered in Homeassistant has no unit of measurement. 

I wonder if anyone has managed to set up something similar and if there is a possibility to use the script in Tasmota to send the MQTT label including unit of measurement?

Also I have tried to use customise function but no change in the attributes of the sensors.

Here is my script for reference.

>D
>B
;smlj=0
->sensor53 r
>R
;smlj=0
>S
;if upsecs>22
;then
;smlj=1
;endif
>M 1
+1,3,o,16,115200,,1
1,1-0:1.8.0(@1,Meter reading import,kWh,enrg_imp,3
1,1-0:2.8.1(@1,Meter reading export,kWh,enrg_exp,3
1,=h—————————————
1,0:1.7.0(@1,power import,kW,power_imp,3
1,0:2.7.0(@1,power export,kW,power_exp,3
;1,13.7.0(@1,Power factor,,factor,3
1,32.7.0(@1,L1 Voltage,V,volt_l1,1
1,52.7.0(@1,L2 Voltage,V,volt_l2,1
1,72.7.0(@1,L3 Voltage,V,volt_l3,1
;1,0:14.7.0(@1,Frequency,Hz,freq,2
1,31.7.0(@1,L1 Current,A,amp_l1,2
1,51.7.0(@1,L2 Current,A,amp_l2,2
1,71.7.0(@1,L3 Current,A,amp_l3,2
1,0:3.8.0(@1,Reactive import,kvarh,renrg_imp,3
1,0:4.8.0(@1,Reactive export,kvarh,renrg_exp,3
;1,0:98.1.0(@(0:#,Month date,,month_date,3
1,=h—————————————
;1,0:96.13.0(@#),Message,,msg,0
;1,0-0:96.1.0(@#),Serial no,,sn,0
#

[Philip Knowles]

What does the MQTT message look like in Console as it looks like it should be sending UoM?

Regards

Phil K

Get Outlook for Android

---

From: sonof...@googlegroups.com <sonof...@googlegroups.com> on behalf of Eyvind Johansson <eyv...@gmail.com>
Sent: Wednesday, December 15, 2021 6:56:55 PM
To: TasmotaUsers <sonof...@googlegroups.com>
Subject: Using smart meter interface for power meter over P1 with Tasmota and MQTT,

 

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[Eyvind Johansson]

Ended up coding for all sensors with yaml, that way they come out correct in HA and wasn't that much work after all. 

17:02:59.453 MQT: tele/P1CE1ECD/SENSOR = {"Time":"2021-12-26T17:02:59","P1":{"enrg_imp":1189.866,"enrg_exp":0.000,"power_imp":3.356,"power":0.000,"volt_l1":228.9,"volt_l2":236.9,"volt_l3":236.6,"freq":0.00,"amp_l1":9.20,"amp_l2":4.30,"amp_l3":3.80,"renrg_imp":224.258,"renrg_exp":42.235}}

No UoM that I can see in the message. The script also only contains MQTT label, but I never figured out how that works.

Thanks for your attention!

Eyvind