双层线不需要料架时，出现目的地有空架但送满料情况。将A6用作专门回收feeder线料架，其他位置作缓存

AGVControl-ProductionLine/BLL/Common.cs

@@ -737,13 +737,13 @@ namespace AGVControl
                                 return true;
                             }
                         }
-                        string nearNodeName = CalculateNearNode(agv, SettingString.C4_Name_Prefix);
-                        if (!nearNodeName.Equals(""))
-                        {
-                            nodeName = nearNodeName;
-                            Common.log.Debug(agv.Name + " 双层线右侧需要料架,准备去4C-" + nearNodeName);
-                            return true;
-                        }
+                        //string nearNodeName = CalculateNearNode(agv, SettingString.C4_Name_Prefix);
+                        //if (!nearNodeName.Equals(""))
+                        //{
+                        //    nodeName = nearNodeName;
+                        //    Common.log.Debug(agv.Name + " 双层线右侧需要料架,准备去4C-" + nearNodeName);
+                        //    return true;
+                        //}
                     }
                     //4D车间寻找
                     if (!SettingString.C4_AGV_IPs.Contains(agv.IP))
@@ -755,13 +755,13 @@ namespace AGVControl
                             Common.log.Debug(agv.Name + " 双层线右侧需要料架,准备去4D-" + nodeName);
                             return true;
                         }
-                        string nearNodeName = CalculateNearNode(agv, SettingString.D4_Name_Prefix);
-                        if (!nearNodeName.Equals(""))
-                        {
-                            nodeName = nearNodeName;
-                            Common.log.Debug(agv.Name + " 双层线右侧需要料架,准备去4D-" + nearNodeName);
-                            return true;
-                        }
+                        //string nearNodeName = CalculateNearNode(agv, SettingString.D4_Name_Prefix);
+                        //if (!nearNodeName.Equals(""))
+                        //{
+                        //    nodeName = nearNodeName;
+                        //    Common.log.Debug(agv.Name + " 双层线右侧需要料架,准备去4D-" + nearNodeName);
+                        //    return true;
+                        //}
                     }
                 }
             }

AGVControl-ProductionLine/bean/node/DoubleLineNodeFor4C.cs

@@ -61,8 +61,8 @@ namespace AGVControl
                         if (Common.CheckStationState(clientNode, out rfid) && CanEmptyTask(emptyJobCnt))
                             return new GoEmptyShelfLineJob(currentAgv.Place, nodeName, rfid);
                     }
+                    return null;
                 }
-
             }
 
             //回收空料架

AGVControl-ProductionLine/bean/node/DoubleLineNodeFor4D.cs

@@ -66,6 +66,7 @@ namespace AGVControl
                         if (Common.CheckStationState(clientNode, out rfid) && CanEmptyTask(emptyJobCnt))
                             return new GoEmptyShelfLineJob(currentAgv.Place, nodeName, rfid);
                     }
+                    return null;
                 }
 
             }