_diWaferOnRobot true代表无遮挡，false代表有遮挡

Furnace/FurnaceRT/Devices/IoFIMS.cs

@@ -188,7 +188,7 @@ namespace FurnaceRT.Devices
         public bool IsPLCInitCompleted => _diHomeComplete == null ? false : _diHomeComplete.Value;
         public bool IsRunning => _diRunning == null ? false : _diRunning.Value;
         public bool IsFoupExist => _diExist == null ? false : _diExist.Value;
-        public bool IsWaferOnRobot => _diWaferOnRobot == null ? false : _diWaferOnRobot.Value;
+        public bool IsWaferOnRobot => _diWaferOnRobot == null ? false : !_diWaferOnRobot.Value;
         public bool IsWaferRobotEX1AxisHomePosition => _diWaferRobotEX1AxisHomePosition == null ? false : _diWaferRobotEX1AxisHomePosition.Value;
         public bool IsWaferRobotEX2AxisHomePosition => _diWaferRobotEX2AxisHomePosition == null ? false : _diWaferRobotEX2AxisHomePosition.Value;
         public bool IsLoadCompleted { get; set; }