diff --git a/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/basedriver/siemens_conveyor/SiemensConveyorDeviceDriver.java b/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/basedriver/siemens_conveyor/SiemensConveyorDeviceDriver.java
index 640343f56..c7a1d51e5 100644
--- a/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/basedriver/siemens_conveyor/SiemensConveyorDeviceDriver.java
+++ b/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/basedriver/siemens_conveyor/SiemensConveyorDeviceDriver.java
@@ -108,7 +108,7 @@ public class SiemensConveyorDeviceDriver extends AbstractOpcDeviceDriver impleme
     private Date require_empty_in_time = new Date();
     private Date require_empty_out_time = new Date();
 
-    private int instruction_require_time_out;
+    private int instruction_require_time_out = 3000;
     //行架机械手申请任务成功标识
     boolean requireSucess = false;
     boolean requireApplyLabelingSuccess = false;