diff --git a/DM_Weight/Port/PortUtil.cs b/DM_Weight/Port/PortUtil.cs
index 73b427a..ba4dc13 100644
--- a/DM_Weight/Port/PortUtil.cs
+++ b/DM_Weight/Port/PortUtil.cs
@@ -23,6 +23,7 @@ using Unity;
 using DM_Weight.msg;
 using DM_Weight.Views;
 using System.Reflection;
+using System.Threading;
 
 namespace DM_Weight.Port
 {
@@ -646,8 +647,9 @@ namespace DM_Weight.Port
         }
 
 
-        private byte[] GetBufferByPort(SerialPort serialPort, int length, int timeout)
+        private byte[] GetBufferByPort(SerialPort serialPort, int length, int timeout, string operation = "")
         {
+            
             byte[] buffer = new byte[length];
             //try
             //{
@@ -657,10 +659,25 @@ namespace DM_Weight.Port
             while (_length != length && end.Subtract(start).TotalMilliseconds < timeout)
             {
                 _length = serialPort.BytesToRead;
+
+                if (_length == 0 && operation.Equals("单支查数"))
+                {
+                    Thread.Sleep(500);
+                    byte[] bufferWrite = new byte[] { 0xaa, (byte)(0xf0 + DrawerNo), 0x01, 0x00, 0x00, 0x00, 0x00, 0xee };
+                    canBusSerial.Write(bufferWrite, 0, 8);
+                    logger.Info($"再次发送OpenStorage:{Convert.ToHexString(bufferWrite)};{end}");
+
+                }
                 end = DateTime.Now;
             }
             if (_length != length)
             {
+                if (_length != 0)
+                {
+                    byte[] _buffer = new byte[_length];
+                    serialPort.Read(_buffer, 0, _length);
+                    logger.Info($"交互超时回复：{Convert.ToHexString(buffer)}");
+                }
                 throw new TimeoutException($"串口【{serialPort.PortName}】交互超时");
             }
             serialPort.Read(buffer, 0, length);
@@ -671,10 +688,10 @@ namespace DM_Weight.Port
             //}
             return buffer;
         }
-        private Task<byte[]> GetBufferByPort(SerialPort serialPort, int length)
+        private Task<byte[]> GetBufferByPort(SerialPort serialPort, int length,string operation="")
         {
 
-            return Task.Run(() => GetBufferByPort(serialPort, length, 3000));
+            return Task.Run(() => GetBufferByPort(serialPort, length, 3000,operation));
         }
 
 
@@ -818,7 +835,7 @@ namespace DM_Weight.Port
             logger.Info($"单支板发送库位数量查询【{string.Join(",", buffer)}】");
             canBusSerial.Write(buffer, 0, 8);
 
-            return await GetBufferByPort(canBusSerial, 13);
+            return await GetBufferByPort(canBusSerial, 13, "单支查数");
         }
         // 获取单个单支板药品数量
         public async Task<byte[]> CheckQuantityByCol(int DrawerNo, int colNo)