diff --git a/acs2/nladmin-system/nlsso-server/src/main/java/org/nl/acs/device_driver/one_conveyor/scanner_weight_conveyor/ConveyorWithScannerWeightDeviceDriver.java b/acs2/nladmin-system/nlsso-server/src/main/java/org/nl/acs/device_driver/one_conveyor/scanner_weight_conveyor/ConveyorWithScannerWeightDeviceDriver.java
index a02e69fa1..e59cd546c 100644
--- a/acs2/nladmin-system/nlsso-server/src/main/java/org/nl/acs/device_driver/one_conveyor/scanner_weight_conveyor/ConveyorWithScannerWeightDeviceDriver.java
+++ b/acs2/nladmin-system/nlsso-server/src/main/java/org/nl/acs/device_driver/one_conveyor/scanner_weight_conveyor/ConveyorWithScannerWeightDeviceDriver.java
@@ -123,8 +123,8 @@ public class ConveyorWithScannerWeightDeviceDriver extends AbstractOpcDeviceDriv
     int to_container_type = 0;
     int last_to_container_type = 0;
 
-    int to_height_level = 0;
-    int last_to_height_level = 0;
+    String to_height_level = null;
+    String last_to_height_level = null;
 
     //托盘类型
     int container_type = 0;
diff --git a/acs2/nladmin-system/nlsso-server/src/main/java/org/nl/acs/device_driver/one_conveyor/scanner_weight_conveyor/ItemProtocol.java b/acs2/nladmin-system/nlsso-server/src/main/java/org/nl/acs/device_driver/one_conveyor/scanner_weight_conveyor/ItemProtocol.java
index 44a44af4d..29fe2a967 100644
--- a/acs2/nladmin-system/nlsso-server/src/main/java/org/nl/acs/device_driver/one_conveyor/scanner_weight_conveyor/ItemProtocol.java
+++ b/acs2/nladmin-system/nlsso-server/src/main/java/org/nl/acs/device_driver/one_conveyor/scanner_weight_conveyor/ItemProtocol.java
@@ -152,8 +152,8 @@ public class ItemProtocol {
         return this.getOpcIntegerValue(item_to_container_type);
     }
 
-    public int getTo_height_level(){
-        return this.getOpcIntegerValue(item_to_height_level);
+    public String getTo_height_level(){
+        return this.getOpcStringValue(item_to_height_level);
     }
     Boolean isonline;