public Program()
{
    
}

public void Save()
{
    
}

public void Main(string argument, UpdateType updateSource)
{
    IMyBeacon mayak = GridTerminalSystem.GetBlockWithName("Маяк") as IMyBeacon;

    if (mayak.Enabled)
    {
        mayak.ApplyAction("OnOff_Off");
    }
    else
    {
        mayak.ApplyAction("OnOff_On");
    }
}