diff --git a/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/basedriver/siemens_weigh_conveyor/SiemensWeightConveyorDeviceDriver.java b/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/basedriver/siemens_weigh_conveyor/SiemensWeightConveyorDeviceDriver.java
index f2a2c1a17..39d8b67dd 100644
--- a/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/basedriver/siemens_weigh_conveyor/SiemensWeightConveyorDeviceDriver.java
+++ b/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/basedriver/siemens_weigh_conveyor/SiemensWeightConveyorDeviceDriver.java
@@ -194,7 +194,7 @@ public class SiemensWeightConveyorDeviceDriver extends AbstractOpcDeviceDriver i
             if (to_strap_times != last_to_strap_times) {
                 logServer.deviceExecuteLog(this.device_code, "", "", "信号to_strap_times：" + last_to_strap_times + "->" + to_strap_times);
             }
-            if (weight == last_weight) {
+            if (weight != last_weight) {
                 logServer.deviceExecuteLog(this.device_code, "", "", "信号weight：" + last_weight + "->" + weight);
             }
             if (to_length != last_to_length) {
@@ -215,7 +215,7 @@ public class SiemensWeightConveyorDeviceDriver extends AbstractOpcDeviceDriver i
             if (to_task != last_to_task) {
                 logServer.deviceExecuteLog(this.device_code, "", "", "信号to_task：" + last_to_task + "->" + to_task);
             }
-            /*if (mode != last_mode) {
+            if (mode != last_mode) {
 
                 //Boolean flag = ObjectUtil.isEmpty(this.device.getExtraValue().get("special_flag")) ? false : Boolean.valueOf(this.device.getExtraValue().get("special_flag").toString());
                 //暂时这样写 后续通过配置判断
@@ -411,10 +411,7 @@ public class SiemensWeightConveyorDeviceDriver extends AbstractOpcDeviceDriver i
                         }
                         break;
                 }
-            }*/
-        } catch (Exception e) {
-            e.printStackTrace();
-            logServer.deviceExecuteLog(this.device_code, "", "", "读取信号值时出现异常:" + Arrays.toString(e.getStackTrace()));
+            }
         }
         last_mode = mode;
         last_move = move;
@@ -429,6 +426,7 @@ public class SiemensWeightConveyorDeviceDriver extends AbstractOpcDeviceDriver i
         last_to_length = to_length;
         last_to_weight = to_weight;
         last_to_height = to_height;
+        last_weight = weight;
     }
 
     public void shipDeviceUpdate() {