diff --git a/Service/Plc/Client/PlcClient.cs b/Service/Plc/Client/PlcClient.cs
index d2466ce..6b7f5d7 100644
--- a/Service/Plc/Client/PlcClient.cs
+++ b/Service/Plc/Client/PlcClient.cs
@@ -52,7 +52,7 @@ public class PlcClient : ModbusTcpMaster
             ModbusDecoder.Decode<PlcToHost>(bytes02, PlcMgr.PlcToHostData, EndingConst.ByteSeq.AB,
                 EndingConst.WordSeq.DC);
 
-            UpdateBinInfo(PlcMgr.PlcToHostData.MaterialDetec01.Value, "1");
+            UpdateBinInfoCache(PlcMgr.PlcToHostData.MaterialDetec01.Value, "1");
             UpdateBinInfo(PlcMgr.PlcToHostData.MaterialDetec02.Value, "2");
             UpdateBinInfo(PlcMgr.PlcToHostData.MaterialDetec03.Value, "3");
             UpdateBinInfo(PlcMgr.PlcToHostData.MaterialDetec04.Value, "4");
@@ -245,4 +245,21 @@ public class PlcClient : ModbusTcpMaster
                 it => it.No == binNo);
 
     }
+    
+    private void UpdateBinInfoCache(int exists, string binNo)
+    {
+        if (exists == 0)
+            BinInfoRepository.Update(
+                it =>
+                    new BinInfo(){
+                        Exists = 0,
+                       
+                    },
+                it => it.No == binNo);
+        else
+
+            BinInfoRepository.Update(it => it.Exists == 1,
+                it => it.No == binNo);
+
+    }
 }