MQTT Topics list

Mr.Dilbert_

Dear Shelly Support Team

I'm trying to get power values out of my Shelly PM 3EM by MQTT. For me it look like the topics structure is different from the 3EM.

With the command : mosquitto_sub -h <IP> -p 1883 -v -t shellypowermeter/status/em:0/#

I get the return:

shellypowermeter/status/em:0 {"id":0,"a_current":0.132,"a_voltage":236.0,"a_act_power":3.9,"a_aprt_power":31.0,"a_pf":-0.53,"b_current":0.594,"b_voltage":236.4,"b_act_power":45.4,"b_aprt_power":140.3,"b_pf":-0.61,"c_current":0.368,"c_voltage":237.8,"c_act_power":54.3,"c_aprt_power":87.5,"c_pf":-0.72,"n_current":null,"total_current":1.094,"total_act_power":103.610,"total_aprt_power":258.799, "user_calibrated_phase":[]}

But no return with: mosquitto_sub -h <IP> -p 1883 -v -t shellypowermeter/status/em:0/total_acpower

What's my fault?

Thank you in advance.

Mr.Dilbert

lubolura

total_act_power ?

Mr.Dilbert_

Well, in the JSON output above one can see "total_act_power":103.610 so I assume it should be possible to read this data with the topic shellypowermeter/status/em:0/total_act_power.

Basically I want to read the current power consumption. Any ideas to get this by MQTT?

supernova1963

Every minute the shelly pro 3EM publish the sum of act energy and act returned energy to the emdata topic:

Code

<defined MQTTT prefix>/status/emdata:0

{
   "id":0,
   "a_total_act_energy":0.06,
   "a_total_act_ret_energy":0.00,
   "b_total_act_energy":0.06,
   "b_total_act_ret_energy":0.00,
   "c_total_act_energy":0.07,
   "c_total_act_ret_energy":0.00,
   "total_act":0.19,
   "total_act_ret":0.00
}

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Zitat

Status

The status of the EMData component contains information about the perpetual counters and possible errors.

Properties:

Property Type Description
id
number
Id of the EMData component instance
a_total_act_energy
number
Total active energy on phase A, Wh
a_total_act_ret_energy
number
Total active returned energy on phase A, Wh
b_total_act_energy
number
Total active energy on phase B, Wh
b_total_act_ret_energy
number
Total active returned energy on phase B, Wh
c_total_act_energy
number
Total active energy on phase C, Wh
c_total_act_ret_energy
number
Total active returned energy on phase C, Wh
total_act
number
Total active energy on all phases, Wh
total_act_ret
number
Total active returned energy on all phases, Wh
errors
array of type string
Error condition occurred. May contain database_error, (shown if the error is present).

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Andry G

Same issue. Ok emdata provide the sum of some energy data but what if I want the a_current, for example? There are not specific topics for each variable? Only a global topic with a JSON as answer?

MQTT Topics list

Status

Shelly 3EM

Shelly EM

Shelly PRO 4PM