diff --git a/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/hongfeng/hf_manipulator/HfGantryManipulatorDeviceDriver.java b/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/hongfeng/hf_manipulator/HfGantryManipulatorDeviceDriver.java
index f80955b..cf56986 100644
--- a/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/hongfeng/hf_manipulator/HfGantryManipulatorDeviceDriver.java
+++ b/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/hongfeng/hf_manipulator/HfGantryManipulatorDeviceDriver.java
@@ -429,6 +429,9 @@ public class HfGantryManipulatorDeviceDriver extends AbstractOpcDeviceDriver imp
     //将扩展表中的字符串数据转换成集合
     public List<String> getExtraDeviceCodes(String extraName) {
         String extraValue = (String) this.getDevice().getExtraValue().get(extraName);
+        if (StrUtil.isEmpty(extraValue)){
+            return new ArrayList<>();
+        }
         String devicesString = extraValue.substring(1, extraValue.length() - 1);
         List<String> devicesList = new ArrayList<>();
         String[] devices = devicesString.split(",");
diff --git a/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/hongfeng/hf_two_rgv/HfTwoRGVDeviceDriver.java b/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/hongfeng/hf_two_rgv/HfTwoRGVDeviceDriver.java
index 8f3b13a..8a09bef 100644
--- a/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/hongfeng/hf_two_rgv/HfTwoRGVDeviceDriver.java
+++ b/acs/nladmin-system/src/main/java/org/nl/acs/device_driver/hongfeng/hf_two_rgv/HfTwoRGVDeviceDriver.java
@@ -686,6 +686,9 @@ public class HfTwoRGVDeviceDriver extends AbstractOpcDeviceDriver implements Dev
     //将扩展表中的字符串数组数据转换成集合
     public List<String> getExtraDeviceCodes(String extraName){
         String extraValue = (String) this.getDevice().getExtraValue().get(extraName);
+        if (StrUtil.isEmpty(extraValue)){
+            return new ArrayList<>();
+        }
         String devicesString = extraValue.substring(1, extraValue.length() - 1);
         List<String> devicesList = new ArrayList<>();
         String[] devices = devicesString.split(",");