判断服务器请求库位超时

DeviceLibrary/theMachine/MainMachine_Labeling.cs

@@ -118,6 +118,8 @@ namespace DeviceLibrary
                                 }
                                 if (LabelingMoveInfo.MoveParam.IsNg) {
                                     LabelingMoveInfo.NextMoveStep(MoveStep.Labeling08);
+                                    if (string.IsNullOrWhiteSpace(LabelingMoveInfo.MoveParam.NgMsg))
+                                        LabelingMoveInfo.MoveParam.NgMsg = "Server timeout when fetching storage location";
                                     LabelingMoveInfo.log($"获取库位失败,送到NG口:{LabelingMoveInfo.MoveParam.NgMsg}");
                                     return;
                                 }