change-优化速度：提升机往下送料的时候，已经有一个补空箱任务，接到空箱退出接驳位的时候，如果还有agv空闲的话还可以再生成下一个补空箱任务

SlnMesnac.WCS/WCS/BearAgv.cs

@@ -1276,9 +1276,10 @@ namespace SlnMesnac.WCS.WCS
                 int suppleTaskCount = sqlSugarClient.Queryable<WcsTask>().Where(x => x.TaskType == StaticTaskType.SupplySmallPalletFromTonerTask || x.TaskType == StaticTaskType.SupplySmallPalletTask).Count();
                 int totalTaskCount = sqlSugarClient.Queryable<WcsTask>().Count();
                 int work2EmptyAmount = workShop2Plc.readInt16ByAddress(StaticData.GetPlcAddress("2#缓存链条线库存数"));
-                int work2BusyFlag = workShop2Plc.readInt16ByAddress(StaticData.GetPlcAddress("2#线体忙碌状态"));
-                if (work3EmptyAmount == 0 && totalTaskCount < 3 && suppleTaskCount == 1 && work2BusyFlag == 0 && work2EmptyAmount > 0)
+                int work2LineBusyFlag = workShop2Plc.readInt16ByAddress(StaticData.GetPlcAddress("2#缓存空箱线体状态"));
+                if (work3EmptyAmount == 0 && totalTaskCount < 3 && suppleTaskCount == 1 && work2LineBusyFlag == 0 && work2EmptyAmount > 0)
                 {
+                    workShop2Plc.writeInt16ByAddress(StaticData.GetPlcAddress("2#缓存空箱线体状态"), 1);
                     WcsTask task = new WcsTask();
                     task.TaskType = StaticTaskType.SupplySmallPalletTask;
                     task.CurrPointNo = "2DeliverMetrologyRoomPoint";
@@ -1295,11 +1296,11 @@ namespace SlnMesnac.WCS.WCS
                         wcsTaskLog.Id = id;
                         sqlSugarClient.Insertable(wcsTaskLog).ExecuteCommand();
                         sqlSugarClient.AsTenant().CommitTran();
-                        workShop2Plc.writeInt16ByAddress(StaticData.GetPlcAddress("2#线体忙碌状态"), 1);
                     }
                     catch (Exception ex)
                     {
                         sqlSugarClient.AsTenant().RollbackTran();
+                        workShop2Plc.writeInt16ByAddress(StaticData.GetPlcAddress("2#缓存空箱线体状态"), 0);
                         _logger.Error($"3#车间从2#接驳位补充小托盘任务生成提交事务异常{ex.Message}");
                     }
                     _logger.Agv($"生成{task.TaskName},起点:{task.CurrPointNo},终点:{task.EndPointNo}");