diff --git a/sec-beidou/src/main/java/com/imdroid/beidou/controller/CmdLineController.java b/sec-beidou/src/main/java/com/imdroid/beidou/controller/CmdLineController.java
index 58cb3fde..bf00c3ef 100644
--- a/sec-beidou/src/main/java/com/imdroid/beidou/controller/CmdLineController.java
+++ b/sec-beidou/src/main/java/com/imdroid/beidou/controller/CmdLineController.java
@@ -65,7 +65,7 @@ public class CmdLineController extends BasicController{
         String sendCmd = cmd.replaceAll(" +","");
         short len = 0;
         int msgType = 0xD310 + cmdType;
-        if(cmdType == 1 || cmdType==11){ // DTU,string format
+        if(cmdType == 10 || cmdType==11){ // DTU,string format
             len = (short) (sendCmd.length() + 5);
             sendCmd = Integer.toHexString(msgType) + HexUtil.Short2HexString(len)+
                     HexUtil.Int2HexString(Integer.parseInt(deviceId))+