Feature request: register device as a "ac load"

[stxShadow]

Hi !
you've integrated tasmota from my last feature request. Thanks a again and i owe you a video.
I've just integrated a split air-con unit to my house and would like to use the tasmota not as a pvinverter but as a "ac load" meter.
Do you think that is easy to implement (and worth to implement) ? I was not able to find anything like this on github.
Thanks a lot
Jens

[stxShadow]

as far as i see you only have to register "com.victronenergy.acload" at line 617 right ?

[henne49]

Thank you for owing us a video, I have great help with @dsteinkopf.

There is no acload in dbus specification only genset or grid:

https://github.com/victronenergy/venus/wiki/dbus#grid-and-genset-meter

I was unable to create one last time, it would also help with request #50

Will give it another try

[henne49]

we are working on it for
grid
pvinverter
acload/genmeter

[stxShadow]

Thank you for owing us a video, I have great help with @dsteinkopf.

There is no acload in dbus specification only genset or grid:

https://github.com/victronenergy/venus/wiki/dbus#grid-and-genset-meter

I was unable to create one last time, it would also help with request #50

Will give it another try

Its working for me now. Just changed line 617 to acload and i get:

Setting it in config.ini would be very nice.

[stundenblume]

@stxShadow
while this driver is very comfortable, you can also have a look for the dbus-mqtt driver. It can create any dbus service via MQTT. For some devices it may be more difficult to write to the correct topics. But with HA, ioBroker, node-RED, ... it's easy.
I was able to get a Gosund SP1 via RULES act like a pvinverter or evcharger. I also display solar forecast data as temperature in VRM. In the wiki I have collected some Tasmota examples.

[henne49]

Thank you for owing us a video, I have great help with @dsteinkopf.
There is no acload in dbus specification only genset or grid:
https://github.com/victronenergy/venus/wiki/dbus#grid-and-genset-meter
I was unable to create one last time, it would also help with request #50
Will give it another try

Its working for me now. Just changed line 617 to acload and i get:

Setting it in config.ini would be very nice.

The idea is to change only in settings.ini, we just need some time to make it flexible and properly software engineered.

@stundenblume can you share your working mqtt settings? if they are different then the ones you shared from the wiki, we will base it on these working examples.

[henne49]

https://github.com/henne49/dbus-opendtu/tree/template-gridmeter%2C-acload

is the testing branch working now for acload and pvinverter from config.ini.

grid, needs some more work

[stundenblume]

The driver will create a dbus-grid-service (is that the correct designation?) and will publish the device-id created from the victron system.
I than send via MQTT all values into the corresponding topics. W/[VRM ID]/grid/[device-id]/Ac/...

Is that the information you need?

[stundenblume]

N/[portal ID]/grid/1/Role= {"value": "grid"}

[henne49]

yes that would be helpful for whole grid

[stundenblume]

From dbus-mqtt drivers services.yml:

# https://github.com/victronenergy/venus/wiki/dbus#grid-and-genset-meter
grid:
  ProductId:
    default: 65535 # 0xFFFF
  CustomName:
    default: "My Grid Meter"
    persist: true
  ErrorCode: # https://www.victronenergy.com/live/mppt-error-codes
    description: "0=No Error"
    default: 0
  DeviceType: # ?
    description: ""
    persist: true
    default: 0
    min: 0
    max: 2
#  AllowedRoles:
#    default: '["grid", "pvinverter", "genset", "acload"]'
#  Role:
#    description: "grid, pvinverter, genset, acload"    
#    persist: true
#    default: "grid"
#  PhaseConfig:
#    description: "0=3P.n; 1=3P.l; 2=2P; 3=1P; 4=3P"
#    persist: true
#    default: 0
#    min: 0
#    max: 4
  Ac/Energy/Forward: # Total bought energy over all phases
    description: "kWh"
    format: "{} kWh"
  Ac/Energy/Reverse: # Total sold energy over all phases
    description: "kWh"
    format: "{} kWh"
  Ac/Power: # Total power of all phases, preferably real power
    description: "W"
    format: "{} W"
  Ac/Current:
    description: "A AC"
    format: "{} A"
  Ac/L1/Current:
    description: "A AC"
    format: "{} A"
  Ac/L1/Energy/Forward:
    description: "kWh"
    format: "{} kWh"
  Ac/L1/Energy/Reverse:
    description: "kWh"
    format: "{} kWh"
  Ac/L1/Power:
    description: "W"
    format: "{} W"
  Ac/L1/Voltage:
    description: "V AC"
    format: "{} V"
  Ac/L2/Current:
    description: "A AC"
    format: "{} A"
  Ac/L2/Energy/Forward:
    description: "kWh"
    format: "{} kWh"
  Ac/L2/Energy/Reverse:
    description: "kWh"
    format: "{} kWh"
  Ac/L2/Power:
    description: "W"
    format: "{} W"
  Ac/L2/Voltage:
    description: "V AC"
    format: "{} V"
  Ac/L3/Current:
    description: "A AC"
    format: "{} A"
  Ac/L3/Energy/Forward:
    description: "kWh"
    format: "{} kWh"
  Ac/L3/Energy/Reverse:
    description: "kWh"
    format: "{} kWh"
  Ac/L3/Power:
    description: "W"
    format: "{} W"
  Ac/L3/Voltage:
    description: "V AC"
    format: "{} V"

MQTT-Explorer Screenshot:

[stundenblume]

I added it to the file last year, since than the documentation of the grid service changed (less information).

[stundenblume]

I will test gridmeter tomorrow.

[dsteinkopf]

Gridmeter will be a bit more difficult as we currently assume, that every device uses only one phase (L1, L2 or L3). Gridmeter should supply all 3 phases.

[dsteinkopf]

...but as I am also using a Grid meter (https://github.com/dsteinkopf/venus.dbus-MqttToGridMeter/), I think it could be a good idea to be integrated here... and I am already thinking about this idea.

[stundenblume]

With PhaseConfig=3 (0=3P.n; 1=3P.l; 2=2P; 3=1P; 4=3P) it should be fine.
But for bigger (normal) installations it would be necessary to write to all phases.

[stundenblume]

$ /data/dbus-opendtu/uninstall.sh
$ rm -r /data/dbus-opendtu/
$ reboot
$ wget https://github.com/henne49/dbus-opendtu/archive/refs/heads/template-gridmeter,-acload.zip
$ unzip template-gridmeter,-acload.zip "dbus-opendtu-template-gridmeter-acload/*" -d /data
$ nano /data/dbus-opendtu-template-gridmeter-acload/config.ini
$ /data/dbus-opendtu-template-gridmeter-acload/install.sh

The "grid" service is not running.

http://192.168.123.105/cm?cmnd=STATUS+8

{
  "StatusSNS": {
    "Time": "2023-03-25T11:24:56",
    "COUNTER": {
      "C1": 1073963
    },
    "SML": {
      "Total_in": 1588.235,
      "Total_out": 459.685,
      "Power_curr": 595,
      "Volt_p1": 231,
      "Volt_p2": 233.5,
      "Volt_p3": 234,
      "Amperage_p1": 0.9,
      "Amperage_p2": 0.4,
      "Amperage_p3": 4.4,
      "Power_curr_p1": -110,
      "Power_curr_p2": 10,
      "Power_curr_p3": 694,
      "frequency": 50
    }
  }
}

config.ini:

GNU nano 4.9.3                                                                                                                                                                                                                                                                                                                                                                                                                                                    /data/dbus-opendtu-template-gridmeter-acload/config.ini                                                                                                                                                                                                                                                                                                                                                                                                                                                              
[DEFAULT]
# Time in minutes how often a status is added to the log-file current.log with log-level INFO
SignOfLifeLog= 1

# Number ob Template Inverter to query
NumberOfTemplates=1

# Which DTU to be used ahoy, opendtu, template
DTU=ahoy

# send YieldDay instead of YieldTotal
useYieldDay=0

#For ESP8266 reduce polling intervall to reduce load
ESP8266PollingIntervall=10000

#Possible Options for Log Level: CRITICAL, ERROR, WARNING, INFO, DEBUG, NOTSET
#To keep current.log small use ERROR
Logging=ERROR

# if ts_last_success is older than this number of seconds, it is not used.
# Set this to < 0 to disable this check.
MagAgeTsLastSuccess=600

# if this is not 0, then no values are actually sent via dbus to vrm/venus.
DryRun=0

#IP of Device to query
Host=192.168.123.132

HTTPTimeout=2.5

# Username/Password leave empty if no authentication is required
Username =
Password =

### Only needed for OpenDTU and ahoy
# AcPosition 0=AC input 1; 1=AC output; 2=AC output 2
# 1st inverter
[INVERTER0]
Phase=L1
DeviceInstance=34
AcPosition=1

# 2nd inverter
[INVERTER1]
Phase=L2
DeviceInstance=35
AcPosition=0

# 3rd inverter
[INVERTER2]
Phase=L3
DeviceInstance=36
AcPosition=1

# 4th inverter
[INVERTER3]
Phase=L1
DeviceInstance=37
AcPosition=1

# 5th inverter
[INVERTER4]
Phase=L2
DeviceInstance=38
AcPosition=1

# 6th inverter
[INVERTER5]
Phase=L3
DeviceInstance=39
AcPosition=1

# 7th inverter
[INVERTER6]
Phase=L1
DeviceInstance=40
AcPosition=1

# 8th inverter
[INVERTER7]
Phase=L2
DeviceInstance=41
AcPosition=1

# 9th inverter
[INVERTER8]
Phase=L3
DeviceInstance=42
AcPosition=1

# 10th inverter
[INVERTER9]
Phase=L1
DeviceInstance=43
AcPosition=1

################## TEMPLATES #####################
####Rearrange and customite Templates as necessary
# AcPosition 0=AC input 1; 1=AC output; 2=AC output 2

[TEMPLATE0]
## Tasmota Example
##
## Username/Password leave empty if no authentication is required
Username =
Password =
Host=192.168.123.105
CUST_SN = 12345678
CUST_API_PATH= cm?cmnd=STATUS+8
CUST_POLLING = 5000
CUST_Total= StatusSNS/SML/Total_in
CUST_Total_Mult = 1
CUST_Power= StatusSNS/SML/Power_curr_p1
CUST_Power_Mult = 1
CUST_Voltage=  StatusSNS/SML/Vol_p1
CUST_Current=  StatusSNS/SML/Amperage_p1
Phase=L1
DeviceInstance=47
AcPosition=1
Name= Tasmota
Servicename=com.victronenergy.grid

[TEMPLATE1]
## Shelly Gen 1 authenticated and unathenticated example
## Documentation: https://shelly-api-docs.shelly.cloud/gen1/#shelly1-1pm-status
##
## Username/Password leave empty if no authentication is required
Username =
Password =
Host=172.16.1.1
CUST_SN = 12345678
CUST_API_PATH= status
CUST_POLLING = 2000
CUST_Total= meters/0/total
###Shelly1PM Multiplier Watt/min 0.000017
CUST_Total_Mult = 0.000017
CUST_Power= meters/0/power
CUST_Power_Mult = 1
CUST_Voltage= none
CUST_Current= none
Phase=L2
DeviceInstance=45
AcPosition=1
Name= Shelly 1PM
Servicename=com.victronenergy.genset

[TEMPLATE2]
## Shelly Gen 2 - Only works unauthenticated!
## Documentation https://shelly-api-docs.shelly.cloud/gen2/ComponentsAndServices/EM#status
##
## Username/Password leave empty if no authentication is required
Host=172.16.1.1
CUST_SN = 12345678
CUST_API_PATH= rpc/Switch.GetStatus?id=0
CUST_POLLING = 2000
CUST_Total= aenergy/total
CUST_Total_Mult = 1
CUST_Power= apower
CUST_Power_Mult = 1
CUST_Voltage=  voltage
CUST_Current=  current
Phase=L3
DeviceInstance=46
AcPosition=1
Name= ShellyPlus1PM
Servicename=com.victronenergy.pvinverter

[stundenblume]

also with this config.ini (NumberOfTemplates=2) it isn't created:

GNU nano 4.9.3                                                                                                                                                                                                                                                                                                                                                                                                                                                    /data/dbus-opendtu-template-gridmeter-acload/config.ini                                                                                                                                                                                                                                                                                                                                                                                                                                                              
[DEFAULT]
# Time in minutes how often a status is added to the log-file current.log with log-level INFO
SignOfLifeLog= 1

# Number ob Template Inverter to query
NumberOfTemplates=2

# Which DTU to be used ahoy, opendtu, template
DTU=ahoy

# send YieldDay instead of YieldTotal
useYieldDay=0

#For ESP8266 reduce polling intervall to reduce load
ESP8266PollingIntervall=10000

#Possible Options for Log Level: CRITICAL, ERROR, WARNING, INFO, DEBUG, NOTSET
#To keep current.log small use ERROR
Logging=ERROR

# if ts_last_success is older than this number of seconds, it is not used.
# Set this to < 0 to disable this check.
MagAgeTsLastSuccess=600

# if this is not 0, then no values are actually sent via dbus to vrm/venus.
DryRun=0

#IP of Device to query
Host=192.168.123.132

HTTPTimeout=2.5

# Username/Password leave empty if no authentication is required
Username =
Password =

### Only needed for OpenDTU and ahoy
# AcPosition 0=AC input 1; 1=AC output; 2=AC output 2
# 1st inverter
[INVERTER0]
Phase=L1
DeviceInstance=34
AcPosition=1

################## TEMPLATES #####################
####Rearrange and customite Templates as necessary
# AcPosition 0=AC input 1; 1=AC output; 2=AC output 2

[TEMPLATE0]
## Tasmota Example
##
## Username/Password leave empty if no authentication is required
Username =
Password =
Host=192.168.123.105
CUST_SN = 12345678
CUST_API_PATH= cm?cmnd=STATUS+8
CUST_POLLING = 5000
CUST_Total= StatusSNS/SML/Total_in
CUST_Total_Mult = 1
CUST_Power= StatusSNS/SML/Power_curr_p1
CUST_Power_Mult = 1
CUST_Voltage=  StatusSNS/SML/Vol_p1
CUST_Current=  StatusSNS/SML/Amperage_p1
Phase=L1
DeviceInstance=47
AcPosition=1
Name= Tasmota
Servicename=com.victronenergy.grid

[stundenblume]

I got:

root@raspberrypi2:~# svstat /service/dbus-opendtu
/service/dbus-opendtu: unable to chdir: file does not exist

after mv /data/dbus-opendtu-template-gridmeter-acload /data/dbus-opendtu and /data/dbus-opendtu/install.sh I get:

root@raspberrypi2:~# svstat /service/dbus-opendtu
/service/dbus-opendtu: up (pid 22514) 1 seconds

It's always very low seconds.

/data/dbus-opendtu/current.logdoes not exist.

[dsteinkopf]

We need the see the logs. Try tail -F /data/dbus-opendtu/current.log (capital -F).

If that does not show the logs, try this:

/data/dbus-opendtu/install.sh
python3 /data/dbus-opendtu/dbus-opendtu.py

...and send us the output.

I assume that for gridmeter, is necessary to send some different "initializing values" (lines 126 ff.). My working grid meter script (https://github.com/dsteinkopf/venus.dbus-MqttToGridMeter/blob/master/MQTTtoGridMeter.py) does send some different values (lines 127ff there) which I never understood and only got it working bases on trial and error.

Are you able to do some experiments and find working values? Then we could implement some config.ini-entries which make the script send these entries... just and idea...

[dsteinkopf]

@henne49 I suggest finishing THIS issue (acload - configurable servicename) now and try to get grid to work in a different issue.

[henne49]

100% can you review and let me know, when to merge?

[dsteinkopf]

@stxShadow please reopen or create a new issue if your request is not (completely) fulfilled.
@stundenblume Please open a new issue about the grid meter problem containing your new observations and results.
Thank you.