Growatt shows minus value since update of domoticz

[rick8245]

Hi,

Since the update of Domoticz last week, my Growatt Inverter shows a minus value instead of the correct value.

growatt.png (15.5 KiB) Viewed 2133 times

Does someone knows how to get back the correct value ?

thanks in advance

Rick

[waltervl]

Looks like viewtopic.php?f=6&t=36076 or viewtopic.php?f=6&t=35610 or viewtopic.php?f=14&t=35958

Solution: Change the script (or is it domoticz hardware plugin?) or change (edit button) on the device the daily energy read from "from device" to "computed".

[rick8245]

Thanks for the answer Waltervl,

Unfortunately none of the suggestiosn did not work out for me yet.

Any other ideas ??


Thanks in advance,

Rick

[waltervl]

What hardware device/plugin or script are you using for Growatt?

[rick8245]

Hardware is dummy and for the device I followed this page (which is in Dutch)
but the commands may give you the needed info.

https://robothuis.nl/2020/01/13/zonnepa ... -domoticz/

[waltervl]

Perhaps ask it in a remark on that page. Things have changed somewhat in these devices so that php script probably needs a modification.

[rick8245]

Thanks I will contact them.

[sincze]

Please check you are using the latest version that has:

Code: Select all

//$todaypower = (float)str_ireplace('kWh', '', $data['todayStr']);
$todaypower = (float)str_ireplace('kWh', '', $data['totalStr']);		// 18-04-2020

in it.

[rick8245]

This line is in my .php script. So that must be ok

[sincze]

Let me check with my code then as currently not expecting issues.

[rick8245]

@Sincze, do you not have this problem ??
I include my script here

[sincze]

Slight difference so it seems.

Mine has:

Code: Select all

$data = json_decode($result, JSON_PRETTY_PRINT);

if(!empty($data['todayStr']) && !empty($data['totalValue'])) {
  $nowpower = (float)$data['powerValue'];
  $todaypower = (float)$data['todayValue'];	// kWH			
  $allpower = (float)$data['totalValue'];		//   [totalStr] => 1505.4kWh	[totalValue] => 1505.4
  $allpower = $allpower*1000;					// Convert to Wh	
  $str=( $nowpower.';'.$allpower ); // times 1000 to convert the 0.1kWh to 100 WattHour and to convert 2.1kWh to 2100 WattHour	
  lg('Growatt Inverter: '. $nowpower.' for domoticz: '.$str);
  ud(DOMOTICZDEVICE,0,$str,'GrowattInverter: Generation updated');
}

[rick8245]

Hi Sincze,

If I modify my old block with your block it looks like this:


curl_close($curl);

$data = json_decode($result, JSON_PRETTY_PRINT);

if(!empty($data['todayStr']) && !empty($data['totalValue'])) {
$nowpower = (float)$data['powerValue'];
$todaypower = (float)$data['todayValue']; // kWH
$allpower = (float)$data['totalValue']; // [totalStr] => 1505.4kWh [totalValue] => 1505.4
$allpower = $allpower*1000; // Convert to Wh
$str=( $nowpower.';'.$allpower ); // times 1000 to convert the 0.1kWh to 100 WattHour and to convert 2.1kWh to 2100 WattHour
lg('Growatt Inverter: '. $nowpower.' for domoticz: '.$str);
ud(DOMOTICZDEVICE,0,$str,'GrowattInverter: Generation updated');
}

But....unfortunately the result is still the same.

Can you send me your whole script ?

[rick8245]

Now I see this value at today value : 3201.900

So this looks not OK. It should be 1.5 (it is cloudy outside)

[sincze]

Wait 24h hours it is the correction.
Look at the code change.

[rick8245]

ok , i will keep you informed

[sincze]

If you look at what changed in the code this will explain why you see the big value. (we went from daily to total generation)
Domoticz needed this 1 time correction, hence the -xx values every day.

Next day it will look like:

Growatt_Solar.png (20.09 KiB) Viewed 2047 times

As you can see this is pretty much now

[rick8245]

@Sincze: Thanks for all your support.

It works like a charm again.

[sincze]

You are welcome. Maybe we should update GitHub as well. Pull request ???

[rick8245]

I do not know how that works .