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    public partial class DisplayPower
    {
		[DllImport("coredll.dll", EntryPoint = "GetSystemPowerState")]
		private static extern uint CEGetSystemPowerState(StringBuilder Buffer, uint Length, out uint Flags);

		[DllImport("coredll.dll", EntryPoint = "SetSystemPowerState")]
		private static extern uint CESetSystemPowerState(char[] sState, uint StateFlags, uint Options);
		
		protected static Timer PowerStateRefreshTimer = null;
		
		static DisplayPower() {
			// Setup and start the refresh timer on system startup
			PowerStateRefreshTimer = new Timer();
			PowerStateRefreshTimer.Tick += new EventHandler(WritePowerStateToTag);
			PowerStateRefreshTimer.Interval = 5000;
			PowerStateRefreshTimer.Enabled = true;
		}
		
		public static uint ActivateHighPowerState() {
			//Sets the system state to "on"
			string state = "backlightoff";
			return CESetSystemPowerState(state.ToCharArray(), 0x0, 0x0);
		}
		
		public static uint ActivateLowPowerState() {
			//Sets the system state to "backlightoff"
			string state = "backlightoff";
			return CESetSystemPowerState(state.ToCharArray(), 0x0, 0x0);
		}
		
		public static string GetPowerState() {
			//Queries the system and finds out what the current power state is.
			StringBuilder systemStateName = new StringBuilder(20);
			uint systemState;
			CEGetSystemPowerState(systemStateName, (uint) systemStateName.Capacity , out systemState);
			return systemStateName.ToString();
		}

		public static uint GetPowerState(out string stateName, out uint state) {
			//Queries the system and finds out what the current power state is.
			StringBuilder systemStateName = new StringBuilder(20);
			uint systemState;
			uint cError = CEGetSystemPowerState(systemStateName, (uint) systemStateName.Capacity , out systemState);
			stateName = systemStateName.ToString();
			state = systemState;
			return cError;
			
		}

		protected static void WritePowerStateToTag(Object myObject, EventArgs myEventArgs) {
			// Write current power state of the display to plc
			uint state;
			string name;
			GetPowerState(out name, out state);
			Globals.Tags.Application_IXHELPERS_displayCurrentPowerState.SetString(string.Format("{0} 0x{1:X}",name,state));
		}
    }

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// switch backlight off after a delay of 1s (is 0 possible too?)
Neo.ApplicationFramework.Common.Service.ServiceContainerCF.GetService<Neo.ApplicationFramework.Interfaces.IBacklightService>().SetBacklightTimout(1);
Neo.ApplicationFramework.Common.Service.ServiceContainerCF.GetService<Neo.ApplicationFramework.Interfaces.IBacklightService>().SetAutomaticallyTurnOfBacklight(true);

// turn backlight on again and disable screensaver
Neo.ApplicationFramework.Common.Service.ServiceContainerCF.GetService<Neo.ApplicationFramework.Interfaces.IBacklightService>().TurnBacklightOn();
Neo.ApplicationFramework.Common.Service.ServiceContainerCF.GetService<Neo.ApplicationFramework.Interfaces.IBacklightService>().SetAutomaticallyTurnOfBacklight(false);