C# IoT Procedures

Mon, 01 Jan 0001 00:00:00 +0000

C# IoT Procedures#

GbbOptimizer allows you to create custom procedures in C# that control IoT devices based on forecasts, energy prices, and consumption history.

A procedure must run in no more than 100 ms and must not interfere with the program’s operation. Otherwise it will be suspended.

The App Object#

Each IoT procedure receives an App object as a parameter. The available properties are listed below.

Main Properties#

Property	Type	Description
`App.CurrDate`	`DateTime?`	Date for which the device should be turned on/off
`App.CurrHour`	`decimal?`	Hour (12:30 = 12.5; 12:45 = 12.75)
`App.CurrForecastIndex`	`int?`	Index in `App.Forecast` for the current date and hour
`App.StringVariables`	`Dictionary<string, string?>`	User string variables (persistent between calls)
`App.DecimalVariables`	`Dictionary<string, decimal?>`	User numeric variables (persistent between calls)

Forecast#

Property	Type	Description
`App.Forecast`	`IForecast[]`	Battery forecast array. `[0]` = current hour, `[1]` = next hour, etc.
`.Date`	`DateTime`	Forecast date
`.DateNo`	`int`	0 = today, 1 = tomorrow, etc.
`.Hour`	`decimal`	Forecast hour
`.HourNo`	`decimal`	Hour counted from the start of the forecast (`[0].HourNo == 0` always)
`.StartBattery_kWhAC`	`decimal`	kWh in battery (AC) at the start of the hour
`.StartBattery_kWh`	`decimal`	kWh in battery (DC) at the start of the hour
`.Prod_KWhAC`	`decimal?`	Production (PV + wind) in the given hour
`.Loads_kWhAC`	`decimal?`	Consumption in the given hour
`.GridCharge_kWhAC`	`decimal?`	kWh from grid to battery (grid side)
`.GridCharge_kWh`	`decimal?`	kWh from grid to battery (battery side)
`.Discharge_kWhAC`	`decimal?`	kWh from battery to grid (grid side)
`.Discharge_kWh`	`decimal?`	kWh from battery to grid (battery side)
`.EndBattery_kWhAC`	`decimal?`	kWh in battery (AC) at the end of the hour
`.EndBattery_kWh`	`decimal?`	kWh in battery (DC) at the end of the hour
`.Meteo_SOC`	`decimal?`	null = no weather warnings; value = target SOC for the warning
`.Temperature_C`	`decimal?`	Temperature (°C) in the given hour
`.ExtraLoads_kWh`	`decimal?`	Total extra loads
`.FromGrid_kWh`	`decimal?`	kWh from grid
`.PurchasePrice`	`decimal?`	Purchase price
`.PurchaseAmount`	`decimal?`	Purchase amount
`.ToGrid_kWh`	`decimal?`	kWh to grid
`.SalePrice`	`decimal?`	Sale price
`.SaleAmount`	`decimal?`	Sale amount

Prices#

Property	Type	Description
`App.Prices`	`Dictionary<(DateTime, decimal), IPrice>`	Prices for yesterday, today, and tomorrow
`.Day`	`DateTime`	Price date
`.Hour`	`decimal`	Price hour
`.PurchasePrice`	`decimal?`	Purchase price
`.SalesPrice`	`decimal?`	Sale price
`.Imported_PurchasePrice`	`decimal?`	Purchase price imported from price source
`.Imported_SalesPrice`	`decimal?`	Sale price imported from price source

History#

Property	Type	Description
`App.History`	`IHistory[]`	Historical data. `[0]` = hour before current, `[1]` = two hours before, etc.
`.Date`	`DateTime`	Date
`.Hour`	`decimal`	Hour
`.FromGrid_kWh`	`decimal?`	kWh from grid
`.PurchasePrice`	`decimal?`	Purchase price
`.PurchaseAmount`	`decimal?`	Purchase amount
`.ToGrid_kWh`	`decimal?`	kWh to grid
`.SalePrice`	`decimal?`	Sale price
`.SaleAmount`	`decimal?`	Sale amount
`.Loads_kWh`	`decimal?`	Consumption (kWh)
`.LoadsPrice`	`decimal?`	Consumption energy price
`.LoadsAmount`	`decimal?`	Consumption energy amount
`.PV_kWh`	`decimal?`	PV production (kWh)
`.SOC_Start`	`decimal?`	SOC at the start of the hour
`.SOC_End`	`decimal?`	SOC at the end of the hour
`.ExtraLoads_Price`	`decimal?`	Extra loads price
`.ExtraLoads_kWh`	`decimal?`	Total extra loads (kWh)

IoT Devices#

Property	Type	Description
`App.IoTDevices`	`Dictionary<string, IIoTDevice>`	List of IoT devices
`.Name`	`string`	Device name
`.IsOn`	`bool`	Current switch state

Special Functions#

Function	Description
`void App.ToLog(string message)`	Display a message in the Log menu
`bool App.IsInLowerPrices(DateTime CurrDate, decimal CurrHour, int LowerHours, bool Purchase)`	Is the given hour among the lowest-price hours of the day?
`bool App.IsInHigherPrices(DateTime CurrDate, decimal CurrHour, int HigherHours, bool Purchase)`	Is the given hour among the highest-price hours of the day?

Available Libraries#

mscorlib.dll
system.runtime.dll
System.Text.RegularExpressions.dll
system.linq.dll
System.Collections.dll

Example#

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public bool IoTDevice_0036_IsOn(IApp App)
{
 return App.IsInLowerPrices(App.CurrDate, App.CurrHour, 3, false)
 || App.Forecast[App.CurrForecastIndex].FromGrid_kWh > 3;
}

This example turns the device on when:

GBB Shunt

Mon, 01 Jan 0001 00:00:00 +0000

GBB Shunt#

GBB Shunt is a GbbOptimizer module designed for installations with lead-acid batteries (flooded, gel, AGM).

What is GBB Shunt?#

In installations with lead-acid batteries, the standard SOC measurement by the inverter can be inaccurate. GBB Shunt enables more accurate tracking of the battery state of charge based on current measurement through a shunt (coulomb counter).

Key Features#

Accurate SOC measurement — based on current measurement (coulomb counting), not voltage
Temperature compensation — accounts for the effect of temperature on lead-acid battery capacity
Battery protection — prevents deep discharges that shorten the life of lead-acid batteries

When to Use?#

GBB Shunt is recommended if:

Advanced on GbbOptimizer — Manual