Ensure dynamic mode is paused during EVCC controlled charging.

[grobihh]

This should fix the charger power control discussed in #28169 (reply in thread)

I did already tested that and it looks fine.

[andig]

Can you explain what dynamic mode is? Should we ask the user to disable it upfront?

[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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[grobihh]

I did not find much about it.
https://v2charge.com/support/power-control/dynamic/

In #28169 I tried to explain my observations.
It seems in Dynamic Mode the V2C charger manages the charging power by itself. It does not accept values for the charging power via the HTTP API.
V2C then selects the amps until the total power limit set for the house. Or it can select the charging power to consume all the available PV power. That is depending on 'DynamicPowerMode'.

To me it seems the parameter 'Dynamic' can switch that behaviour on (1) or off (0).
When switched on the charger does not accept values for the charging power via the HTTP API.
Unfortunately, when 'Dynamic' is disabled the charger does not return the power readings any more.

But then there is the parameter 'PauseDynamic' (0=unpaused, 1=paused).
That seems to pause the dynamic mode without fully disabling it.
With that set to 'paused' the V2C charger accepts the ampere commands via the HTTP API and it still reports all known power values (charger, house, PV, BAT).

I opened this as a draft because I wanted to do a little bit more testing.
Writing this explanation I recognize that I have to invert the 'pause' value for 'PauseDynamic' in the code.
I will update the PR.

I will provide my test results to confirm the explained logic.

[andig]

Unfortunately, when 'Dynamic' is disabled the charger does not return the power readings any more.

Wow, that's as stupid as they come... This does mean, that dynamic mode must be enabled, yet we need to pause it and should so do immedieately and once and for all. There can only be a single controller- and that should be evcc.

[grobihh]

I think I got it now.

Start charging and set PauseDynamic.

[trydan] TRACE 2026/03/20 13:39:06 {"ID":"QZJA2G","FirmwareVersion":"2.4.2","ChargeState":1,"ReadyState":1,"ChargePower":0.00,"VoltageInstallation":222,"ChargeEnergy":0.00,"SlaveError":0,"ChargeTime":0,"HousePower":1698.75,"FVPower":704.81,"BatteryPower":0.00,"Paused":1,"Locked":1,"Timer":0,"Intensity":0,"Dynamic":1,"MinIntensity":6,"MaxIntensity":32,"PauseDynamic":0,"FirmwareVersion":"2.4.2","DynamicPowerMode":0,"ContractedPower":5000,"SSID":"WIFI","IP":"X.X.X.X","SignalStatus":2}
[trydan] TRACE 2026/03/20 13:39:06 GET http://V2C-Trydan/write/Intensity=6
[trydan] TRACE 2026/03/20 13:39:06 OK
[trydan] TRACE 2026/03/20 13:39:06 GET http://V2C-Trydan/write/Paused=0
[trydan] TRACE 2026/03/20 13:39:06 OK
[trydan] TRACE 2026/03/20 13:39:06 GET http://V2C-Trydan/write/Locked=0
[trydan] TRACE 2026/03/20 13:39:06 OK
[trydan] TRACE 2026/03/20 13:39:06 GET http://V2C-Trydan/write/PauseDynamic=1
[trydan] TRACE 2026/03/20 13:39:06 OK
[trydan] TRACE 2026/03/20 13:39:14 GET http://V2C-Trydan/RealTimeData
[lp-1  ] INFO 2026/03/20 13:40:22 start charging ->
[trydan] TRACE 2026/03/20 13:40:44 GET http://V2C-Trydan/RealTimeData
[trydan] TRACE 2026/03/20 13:40:46 {"ID":"QZJA2G","FirmwareVersion":"2.4.2","ChargeState":2,"ReadyState":0,"ChargePower":1324.93,"VoltageInstallation":222,"ChargeEnergy":0.01,"SlaveError":0,"ChargeTime":37,"HousePower":2618.38,"FVPower":511.32,"BatteryPower":0.00,"Paused":0,"Locked":0,"Timer":0,"Intensity":6,"Dynamic":1,"MinIntensity":6,"MaxIntensity":32,"PauseDynamic":1,"FirmwareVersion":"2.4.2","DynamicPowerMode":0,"ContractedPower":5000,"SSID":"WIFI","IP":"X.X.X.X","SignalStatus":2}
[trydan] TRACE 2026/03/20 13:40:48 GET http://V2C-Trydan/RealTimeData

EVCC changing charging power #1:

[trydan] TRACE 2026/03/20 13:41:07 GET http://V2C-Trydan/write/Intensity=21
{"ID":"QZJA2G","FirmwareVersion":"2.4.2","ChargeState":2,"ReadyState":0,"ChargePower":4662.00,"VoltageInstallation":222,"ChargeEnergy":0.03,"SlaveError":0,"ChargeTime":67,"HousePower":4662.00,"FVPower":723.94,"BatteryPower":0.00,"Paused":0,"Locked":0,"Timer":0,"Intensity":21,"Dynamic":1,"MinIntensity":6,"MaxIntensity":32,"PauseDynamic":1,"FirmwareVersion":"2.4.2","DynamicPowerMode":0,"ContractedPower":5000,"SSID":"GERECKE-IOT","IP":"10.10.10.208","SignalStatus":2}

#2

[trydan] TRACE 2026/03/20 13:41:18 GET http://V2C-Trydan/write/Intensity=22
{"ID":"QZJA2G","FirmwareVersion":"2.4.2","ChargeState":2,"ReadyState":0,"ChargePower":4884.00,"VoltageInstallation":222,"ChargeEnergy":0.07,"SlaveError":0,"ChargeTime":97,"HousePower":5942.31,"FVPower":727.62,"BatteryPower":0.00,"Paused":0,"Locked":0,"Timer":0,"Intensity":22,"Dynamic":1,"MinIntensity":6,"MaxIntensity":32,"PauseDynamic":1,"FirmwareVersion":"2.4.2","DynamicPowerMode":0,"ContractedPower":5000,"SSID":"WIFI","IP":"X.X.X.X","SignalStatus":2}

#3

[trydan] TRACE 2026/03/20 13:41:57 GET http://V2C-Trydan/write/Intensity=6
{"ID":"QZJA2G","FirmwareVersion":"2.4.2","ChargeState":2,"ReadyState":0,"ChargePower":1332.00,"VoltageInstallation":222,"ChargeEnergy":0.09,"SlaveError":0,"ChargeTime":127,"HousePower":2494.05,"FVPower":662.14,"BatteryPower":0.00,"Paused":0,"Locked":0,"Timer":0,"Intensity":6,"Dynamic":1,"MinIntensity":6,"MaxIntensity":32,"PauseDynamic":1,"FirmwareVersion":"2.4.2","DynamicPowerMode":0,"ContractedPower":5000,"SSID":"WIFI","IP":"X.X.X.X","SignalStatus":2}

Stop charging and reset PauseDynamic.

[trydan] TRACE 2026/03/20 13:42:37 GET http://V2C-Trydan/write/Paused=1
[trydan] TRACE 2026/03/20 13:42:37 OK
[trydan] TRACE 2026/03/20 13:42:37 GET http://V2C-Trydan/write/Locked=1
[trydan] TRACE 2026/03/20 13:42:38 OK
[trydan] TRACE 2026/03/20 13:42:39 GET http://V2C-Trydan/write/PauseDynamic=0
[trydan] TRACE 2026/03/20 13:42:40 OK
[trydan] TRACE 2026/03/20 13:42:44 GET http://V2C-Trydan/RealTimeData
[trydan] TRACE 2026/03/20 13:42:46 {"ID":"QZJA2G","FirmwareVersion":"2.4.2","ChargeState":1,"ReadyState":1,"ChargePower":0.00,"VoltageInstallation":222,"ChargeEnergy":0.00,"SlaveError":0,"ChargeTime":0,"HousePower":1410.35,"FVPower":762.19,"BatteryPower":0.00,"Paused":1,"Locked":1,"Timer":0,"Intensity":0,"Dynamic":1,"MinIntensity":6,"MaxIntensity":32,"PauseDynamic":0,"FirmwareVersion":"2.4.2","DynamicPowerMode":0,"ContractedPower":5000,"SSID":"WIFI","IP":"X.X.X.X","SignalStatus":2}
[lp-1  ] INFO 2026/03/20 13:42:55 stop charging <-

'PauseDynamic' will only be changed if 'Dynamic' (dynamic power control) is enabled.
I don't know if anybody would like to use the V2C APP or the V2C internal logic as a backup.
Better to return the system to the state it was before the charging session.