Meter (CT-RING) data retrieval possibility ?

[barrets2002]

Hello all,

I have an ECU-C and installed CT-Rings to have global power metering. Is it possible to retrieve this information ?

I didn't find the way to do it.

I have included snapshot of info on ECU http pages.

Thanks,

Stephane

[HAEdwin]

Since I don't have an ECU-C myself, you'll have to help me find a possible solution. Is there a web page somewhere with current values ​​of the CT rings? The graph you show is compiled based on a data buffer, which URL belongs to it? Are you able to analyze the traffic in the Chrome browser via Ctrl+shift+i and then the network tab? Ideally, I'm looking for something like an APS command to retrieve the values ​​every 5 minutes.

[barrets2002]

Hello and thanks for the answer.

I have found this URL : http://192.168.x.x/index.php/meter/old_meter_power_graph

Which give the file as an answer :

old_meter_power_graph.json

It is used here in this page : view-source:http://192.168.x.x/index.php/meter/meter_power_graph
http___192.168.x.x_index.php_meter_meter_power_graph.zip

by this function :

function show_graph()
{
$.ajax({
url : "http://192.168.x.x/index.php/meter/old_meter_power_graph",
type : "post",
dataType : "json",
data: "date=" + $(".datepicker").val(),
success : function(Results){
//整理数据
var data_power_1a = new Array();
var data_power_1b = new Array();
var data_power_1c = new Array();
var data_power_2a = new Array();
var data_power_2b = new Array();
var data_power_2c = new Array();
var data_power_3a = new Array();
var data_power_3b = new Array();
var data_power_3c = new Array();
$.each(Results.power1,function(key,value){
data_power_1a.push([value.time,value.powerA]);
data_power_1b.push([value.time,value.powerB]);
data_power_1c.push([value.time,value.powerC]);
});
$.each(Results.power2,function(key,value){
data_power_2a.push([value.time,value.powerA]);
data_power_2b.push([value.time,value.powerB]);
data_power_2c.push([value.time,value.powerC]);
});
$.each(Results.power2,function(key,value){
var temp1=value.powerA+data_power_1a[key][1];
var temp2=value.powerB+data_power_1b[key][1];
var temp3=value.powerC+data_power_1c[key][1];
data_power_3a.push([value.time,temp1]);
data_power_3b.push([value.time,temp2]);
data_power_3c.push([value.time,temp3]);
});

 		//重新绘制图表
        $('#myChart').highcharts({
            subtitle: {
            	text: Results.subtitle
            },
            legend:{
                layout:'vertical',
                align:'right',
                verticalAlign:'middle',
                borderWidth: 0
                    },
            series:[
            {
                name: 'Produced A',    
                data: data_power_1a
            },
            {
                name: 'Produced B',    
                data: data_power_1b
            },
            {
                name: 'Produced C',    
                data: data_power_1c
            },
            {
                name: 'Consumed A',    
                data: data_power_3a
            },
            {
                name: 'Consumed B',    
                data: data_power_3b
            },
            {
                name: 'Consumed C',    
                data: data_power_3c
            },
            {
                name: 'Imported/Exported A',    
                data: data_power_2a
            },
            {
                name: 'Imported/Exported B',    
                data: data_power_2b
            },
            {
                name: 'Imported/Exported C',    
                data: data_power_2c
            }
            
            
            ]
        });
        //显示发电量
        $('#total').text("Solar Generated Today: " + Results.today_energy + " kWh");
    },
    error : function() { alert("Error"); }
})

}

[barrets2002]

I have another page with this king of information, same old page :

I have a difference in the post here is the post :
url : "http://192.168.11.165/index.php/meter/old_meter_energy_graph",
type : "post",
dataType : "json",
data: "date=" + $(".datepicker").val()
+ "&period=" + data_period,

With :

var data_period = 'weekly'; //默认查询一周
function select_period(period)
{
if(period == 'yearly'){
$("#show_period").html("Current Year");
}
else if(period == 'monthly'){
$("#show_period").html("Current Month");
}
else{
$("#show_period").html("Current Week");
}
data_period = period;
show_graph();
}

Whereas for the other one I have (no period here) :
url : "http://192.168.11.165/index.php/meter/old_meter_power_graph",
type : "post",
dataType : "json",
data: "date=" + $(".datepicker").val(),

[rissson]

Here's what I currently have in my conf to retrieve the data.

---

For instant power consumption:

rest:
  - resource: http://172.29.192.67/index.php/meter/old_meter_power_graph
    scan_interval: 300
    sensor:
      - unique_id: apsystems_ecu_c_power_meter_produced_a
        name: "APSystems ECU-C Power Meter - Produced - A"
        value_template: "{{ value_json.power1[-1].powerA }}"
        unit_of_measurement: W
        device_class: power
        state_class: measurement
      - unique_id: apsystems_ecu_c_power_meter_produced_b
        name: "APSystems ECU-C Power Meter - Produced - B"
        value_template: "{{ value_json.power1[-1].powerB }}"
        unit_of_measurement: W
        device_class: power
        state_class: measurement
      - unique_id: apsystems_ecu_c_power_meter_produced_c
        name: "APSystems ECU-C Power Meter - Produced - C"
        value_template: "{{ value_json.power1[-1].powerC }}"
        unit_of_measurement: W
        device_class: power
        state_class: measurement
      - unique_id: apsystems_ecu_c_power_meter_imported_exported_a
        name: "APSystems ECU-C Power Meter - Imported/Exported - A"
        value_template: "{{ value_json.power2[-1].powerA }}"
        unit_of_measurement: W
        device_class: power
        state_class: measurement
      - unique_id: apsystems_ecu_c_power_meter_imported_exported_b
        name: "APSystems ECU-C Power Meter - Imported/Exported - B"
        value_template: "{{ value_json.power2[-1].powerB }}"
        unit_of_measurement: W
        device_class: power
        state_class: measurement
      - unique_id: apsystems_ecu_c_power_meter_imported_exported_c
        name: "APSystems ECU-C Power Meter - Imported/Exported - C"
        value_template: "{{ value_json.power2[-1].powerC }}"
        unit_of_measurement: W
        device_class: power
        state_class: measurement
sensor:
  - platform: min_max
    unique_id: apsystems_ecu_c_power_meter_imported_exported
    name: "APSystems ECU-C Power Meter - Imported/Exported"
    type: sum
    round_digits: 3
    entity_ids:
      - sensor.apsystems_ecu_c_power_meter_imported_exported_a
      - sensor.apsystems_ecu_c_power_meter_imported_exported_b
      - sensor.apsystems_ecu_c_power_meter_imported_exported_c
  - platform: min_max
    unique_id: apsystems_ecu_c_power_meter_produced
    name: "APSystems ECU-C Power Meter - Produced"
    type: sum
    round_digits: 3
    entity_ids:
      - sensor.apsystems_ecu_c_power_meter_produced_a
      - sensor.apsystems_ecu_c_power_meter_produced_b
      - sensor.apsystems_ecu_c_power_meter_produced_c

Just after midnight, those fail as powerX[-1] is non existant, but otherwise this works fine.

---

For energy readings, I have this:

rest:
  - resource: http://172.29.192.67/index.php/meter/old_meter_energy_graph
    scan_interval: 300
    sensor:
      - unique_id: apsystems_ecu_c_energy_meter_produced
        name: "APSystems ECU-C Energy Meter - Produced"
        value_template: "{{ value_json.energy1[-1].energy }}"
        unit_of_measurement: kWh
        device_class: energy
        state_class: total_increasing
      - unique_id: apsystems_ecu_c_energy_meter_imported_exported_raw
        name: "APSystems ECU-C Energy Meter - Imported/Exported - Raw"
        value_template: "{{ value_json.energy2[-1].energy }}"
        unit_of_measurement: kWh
        state_class: measurement
template:
  - unique_id: apsystems_ecu_c_energy_meter_imported_exported
    sensor:
      - name: "APSystems ECU-C Energy Meter - Imported/Exported"
        state: |
          {% if now().hour == 0 and now().minute <= 10 %}
          0
          {% else %}
          {{ states('sensor.apsystems_ecu_c_energy_meter_imported_exported_raw') | float }}
          {% endif %}
        unit_of_measurement: kWh
        device_class: energy
        state_class: total
        last_reset: "{{ today_at() }}"
    trigger:
      - trigger: time
        at: "00:00:00"
      - trigger: state
        entity_id: sensor.apsystems_ecu_c_energy_meter_imported_exported_raw
  - unique_id: apsystems_ecu_c_energy_meter_imported_exported_inverted
    sensor:
      - name: "APSystems ECU-C Energy Meter - Imported/Exported - Inverted"
        state: |
          {% if now().hour == 0 and now().minute <= 10 %}
          0
          {% else %}
          {{ states('sensor.apsystems_ecu_c_energy_meter_imported_exported_raw') | float * -1 }}
          {% endif %}
        unit_of_measurement: kWh
        device_class: energy
        state_class: total
        last_reset: "{{ today_at() }}"
    trigger:
      - trigger: time
        at: "00:00:00"
      - trigger: state
        entity_id: sensor.apsystems_ecu_c_energy_meter_imported_exported_raw
utility_meter:
  apsystems_ecu_c_energy_meter_imported:
    source: sensor.apsystems_ecu_c_energy_meter_imported_exported
    unique_id: apsystems_ecu_c_energy_meter_imported
    name: "APSystems ECU-C Energy Meter - Imported"
    cycle: daily
    delta_values: false
    net_consumption: false
    periodically_resetting: true
  apsystems_ecu_c_energy_meter_exported:
    source: sensor.apsystems_ecu_c_energy_meter_imported_exported_inverted
    unique_id: apsystems_ecu_c_energy_meter_exported
    name: "APSystems ECU-C Energy Meter - Exported"
    cycle: daily
    delta_values: false
    net_consumption: false
    periodically_resetting: true

This works pretty fine, except for the resetting at midnight part. For some reason, the non-inverted sensor resets fine, however the inverted one resets a bit too late and causes the utility meter to jump up by the value it resets to, which in turns causes a peak consumption at midnight of several kWh, which obviously didn't happen. I've been resetting those values manually from the HA developer tools, but it's definitely not ideal.

[rissson]

I'm happy to provide you with remote read-only access to the relevant pages in my ECU-C if needed

[HAEdwin]

Thanks, great addition - let me focus on power (I corrected the formula: consumed power in kW on phaseA = power2 + power1). I'll see how I can simulate this to add it to the integration. Performance is somewhat of a concern as well as the name "old_meter_power_graph". It's unsure if this will change in future firmware releases. I also have to implement the functionality but separate it for all users without ECU-C.

[rissson]

Yes, consumed power on phase A (in W) = power2.phaseA + power1.phaseA

Performance is somewhat of a concern

AFAIK this data is updated every 5 minutes, so there wouldn't be any need to update this any more frequently than that.

as well as the name "old_meter_power_graph"

Yeah agreed, this is a new install for me, so I don't know how that happens.

For energy, I tried doing Riemann sums in HA directly, but the data from there is wildly different compared to the data reported by the ECU

[jdelzor]

Hi,
That's a great news. I've installed your plugin yesterday to get data from my Ecu-C and I was exactly looking for this kind of data retrieval :)

Let me know if I can help as a beta tester or something like that.

[HAEdwin]

So suppose you are measuring on one phase (A), it would look like this (focus only on: Consumed A, Grid CT A and Production CT A)

Any comments on the use of icons, labels or results?
Although historical data might be present for that day, the graphs are being build from the latest data like in the 3 examples above.

[HAEdwin]

@rissson @jdelzor @barrets2002
You are able to test the release 2.7.0 by manually copying the files from https://github.com/HAEdwin/homeassistant-apsystems_ecu_reader/tree/main/custom_components/apsystems_ecu_reader to your local installation. Don't forget to restart HA after copying the files. Please note that the history charts are constructed using the most recent data, not historical data.
You'll be allright if you only copy these 8 files:

• init
• button
• const
• ecu_api
• gui_helpers
• manifest
• sensor
• switch

I hope I forgot nothing and there is still some logging going on for feedback purposes. Also note the startup might now be somewhat delayed for the integration, that is because it now has to get the graph data also.

[rissson]

{"power1":[{"time":1744754683000,"powerA":0,"powerB":0,"powerC":0},{"time":1744754983000,"powerA":0,"powerB":0,"powerC":0},{"time":1744755283000,"powerA":0,"powerB":0,"pow
erC":0},{"time":1744755583000,"powerA":0,"powerB":0,"powerC":0},{"time":1744755883000,"powerA":0,"powerB":0,"powerC":0},{"time":1744756188000,"powerA":0,"powerB":0,"powerC":0},{"time":1744756489000,"powerA":0,"powerB":0,"powerC":0},{"time":1744756793000,"powerA":0,"powerB":0,"powerC":0},{"time":1744757093000,"powerA":0
,"powerB":0,"powerC":0},{"time":1744757397000,"powerA":0,"powerB":0,"powerC":0},{"time":1744757697000,"powerA":0,"powerB":0,"powerC":0},{"time":1744758003000,"powerA":0,"powerB":0,"powerC":0},{"time":1744758305000,"powerA":0,"powerB":0,"powerC":0},{"time":1744758611000,"powerA":0,"powerB":0,"powerC":0},{"time":17447589
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[rissson]

And indeed, no more stacktraces!

[rissson]

And the entity values are correct as well, matching what the ECU is reporting

(I've excluded B and C phases for readability, but they are correctly reported as 0)

[HAEdwin]

Great, thanks for testing! (you might want to hide you ECU-ID's). I will await further comments and release the new version asap.

[HAEdwin]

@rissson @barrets2002 Hi, mind taking a look at #42 ? Can't confirm this myself since I don't own an ECU-C. Could he have swapped the CT-rings by mistake or is it really swapped?

[jdelzor]

Hi @HAEdwin,

I was able to do a test this morning. It works fine.
Here is a screenshot of gauges (I'm still working on my dashboard :/ )

I supposed "Current power" was equal to Production CTA, but it seems that not. I'm not sure why.
I also get data from B and C, but at 0V as I dont use them.

[jdelzor]

I reply to myself.

It seems that current power is the sum of all inverters Current Power. I can't find the script for the moment.

[HAEdwin]

I just released v2.7.2 from this issue #42 is seems that production and grid consumption was swapped.

[HAEdwin]

I'll close this discussion if for any reason it must be reopened, let me know. 🧹