update 完成所有投料逻辑，IO点位控制，急停控制

Model/Position.py

@@ -45,4 +45,7 @@ class Real_Position(Position):
         self.U = U
         self.V = V
         self.W = W
-        return self
+        return self
+
+    def to_string(self):
+        return "X:{:.3f},Y:{:.3f},Z:{:.3f},U:{:.3f},V:{:.3f},W:{:.3f}".format(self.X,self.Y,self.Z,self.U,self.V,self.W)

Model/RobotModel.py

@@ -162,7 +162,7 @@ class CMDInstructRequest:
     def __init__(self):
         self.dsID = 'www.hc-system.com.HCRemoteCommand'
         self.reqType = "AddRCC"
-        self.emptyList = '1'
+        self.emptyList = '1' #清空机械臂的远程命令数据
         self.instructions = []
 
     def toString(self):