diff --git a/app.db b/app.db
index 53073ce..559ab6f 100644
Binary files a/app.db and b/app.db differ
diff --git a/src/main/java/com/iflytop/digester/underframework/UfCmdSnippetExecutor.java b/src/main/java/com/iflytop/digester/underframework/UfCmdSnippetExecutor.java
index bb1a585..b4148c5 100644
--- a/src/main/java/com/iflytop/digester/underframework/UfCmdSnippetExecutor.java
+++ b/src/main/java/com/iflytop/digester/underframework/UfCmdSnippetExecutor.java
@@ -21,31 +21,30 @@ public class UfCmdSnippetExecutor {
 
     /**
      * execute snippet
-     * @param snippetName - snippet name
+     * @param snippetKey - snippet key
      */
-    static public void execute(String snippetName) {
-        UfCmdSnippetExecutor.execute(snippetName, new HashMap<>());
+    static public void execute(String snippetKey) {
+        UfCmdSnippetExecutor.execute(snippetKey, new HashMap<>());
     }
 
     /**
      * execute snippet with params
-     * @param snippetName - snippet name
+     * @param snippetKey - snippet name
      * @param params - params
      */
-    static public void execute(String snippetName, Map<String, Object> params) {
+    static public void execute(String snippetKey, Map<String, Object> params) {
         Boolean logEnabled = UfApplication.getApp().getEnv().getProperty("device.snippet-execute-log-enable", Boolean.class);
         if ( Boolean.TRUE.equals(logEnabled) ) {
-            LOG.info("[Snippet Execute] : {} ({})", snippetName, UfJsonHelper.objectToJson(params));
+            LOG.info("[Snippet Execute] : {} ({})", snippetKey, UfJsonHelper.objectToJson(params));
         }
 
+        var snippet = UfActiveRecord.findOne(UfMdbSnippet.class, Map.of("key", snippetKey));
+        if (null == snippet) {
+            throw new RuntimeException("无效的片段KEY : " + snippetKey);
+        }
 
-//        var snippet = UfActiveRecord.findOne(UfMdbSnippet.class, Map.of("key", snippetName));
-//        if (null == snippet) {
-//            throw new RuntimeException("无效的片段名称 : " + snippetName);
-//        }
-//
-//        var executor = new UfCmdSnippetExecutor(snippet, params);
-//        executor.run();
+        var executor = new UfCmdSnippetExecutor(snippet, params);
+        executor.run();
     }
 
     // constructor
@@ -66,13 +65,18 @@ public class UfCmdSnippetExecutor {
 
         for ( JsonNode cmdNode : cmdsJsonTree ) {
             var cmdId = cmdNode.get("cmdId").asText();
-            var cmd = UfActiveRecord.findOne(UfMdbActuatorCmd.class, cmdId);
-            if (null == cmd) {
-                throw new RuntimeException("无效的指令ID : " + cmdId);
-            }
+            var cmdParams = cmdNode.get("params").asText();
+            this.executeStep(cmdId, cmdParams);
+        }
+    }
 
-            cmd.parameters = cmdNode.get("params").asText();
-            UfActuatorCmdExecutor.execute(cmd);
+    // execute step
+    public void executeStep(String cmdId, String cmdParams) {
+        var cmd = UfActiveRecord.findOne(UfMdbActuatorCmd.class, cmdId);
+        if (null == cmd) {
+            throw new RuntimeException("无效的指令ID : " + cmdId);
         }
+        cmd.parameters = cmdParams;
+        UfActuatorCmdExecutor.execute(cmd);
     }
 }
diff --git a/src/main/java/com/iflytop/digester/underframework/connection/UfConnection.java b/src/main/java/com/iflytop/digester/underframework/connection/UfConnection.java
index 4042600..decd671 100644
--- a/src/main/java/com/iflytop/digester/underframework/connection/UfConnection.java
+++ b/src/main/java/com/iflytop/digester/underframework/connection/UfConnection.java
@@ -1,6 +1,5 @@
 package com.iflytop.digester.underframework.connection;
 import com.iflytop.digester.underframework.dao.model.UfMdbActuatorCmd;
-
 import java.util.Map;
 public interface UfConnection {
     /**
@@ -20,4 +19,10 @@ public interface UfConnection {
      * @param properties - properties
      */
     void setProperties( Map<String, Object> properties );
+
+    /**
+     * get if connection is enable
+     * @return true if enable
+     */
+    Boolean getIsEnabled();
 }
diff --git a/src/main/java/com/iflytop/digester/underframework/connection/UfConnectionBase.java b/src/main/java/com/iflytop/digester/underframework/connection/UfConnectionBase.java
index ba9b606..673a65d 100644
--- a/src/main/java/com/iflytop/digester/underframework/connection/UfConnectionBase.java
+++ b/src/main/java/com/iflytop/digester/underframework/connection/UfConnectionBase.java
@@ -10,6 +10,13 @@ abstract public class UfConnectionBase implements UfConnection {
     public String name;
     // key
     public String key;
+    // enable
+    public Boolean enable;
+
+    @Override
+    public Boolean getIsEnabled() {
+        return this.enable;
+    }
 
     @Override
     public void setProperties(Map<String, Object> properties) {
diff --git a/src/main/java/com/iflytop/digester/underframework/connection/UfConnectionManager.java b/src/main/java/com/iflytop/digester/underframework/connection/UfConnectionManager.java
index 3361dc0..bff3f63 100644
--- a/src/main/java/com/iflytop/digester/underframework/connection/UfConnectionManager.java
+++ b/src/main/java/com/iflytop/digester/underframework/connection/UfConnectionManager.java
@@ -22,7 +22,9 @@ public class UfConnectionManager {
             String className = this.getClass().getPackageName() + ".Uf" + type;
             UfConnection con = (UfConnection)UfClassHelper.newInstance(className);
             con.setProperties(option);
-            con.connect();
+            if ( con.getIsEnabled() ) {
+                con.connect();
+            }
             this.connections.put(key, con);
         }
     }
diff --git a/src/main/java/com/iflytop/digester/underframework/web/api/TsApiSnippet.java b/src/main/java/com/iflytop/digester/underframework/web/api/TsApiSnippet.java
index b5b4dbf..910a4f2 100644
--- a/src/main/java/com/iflytop/digester/underframework/web/api/TsApiSnippet.java
+++ b/src/main/java/com/iflytop/digester/underframework/web/api/TsApiSnippet.java
@@ -1,4 +1,5 @@
 package com.iflytop.digester.underframework.web.api;
+import com.iflytop.digester.underframework.UfCmdSnippetExecutor;
 import com.iflytop.digester.underframework.dao.record.UfActiveRecord;
 import com.iflytop.digester.underframework.dao.model.UfMdbSnippet;
 import org.springframework.stereotype.Controller;
@@ -37,7 +38,7 @@ public class TsApiSnippet extends UfApiControllerBase {
     public UfApiResponse execute(@RequestBody UfMdbSnippet snippet ) {
         try {
             snippet = UfActiveRecord.findOne(UfMdbSnippet.class, snippet.id);
-//            TsSnippetExecutor.executeSnippet(snippet);
+            UfCmdSnippetExecutor.execute(snippet.key);
         } catch ( Exception e ) {
             return error(e.getMessage());
         }
@@ -48,10 +49,11 @@ public class TsApiSnippet extends UfApiControllerBase {
     @ResponseBody
     public UfApiResponse executeStep(@RequestBody Map<String,Object> params ) {
         try {
-            String cmd = (String)params.get("cmd");
-            String cmdParams = (String)params.get("params");
-//            TsSnippetExecutor executor = new TsSnippetExecutor(null);
-//            executor.executeStep(cmd, cmdParams);
+            String cmdId = (String)params.get("cmdId");
+            String cmdParams = (String)params.get("cmdParams");
+
+            var executor = new UfCmdSnippetExecutor(null, null);
+            executor.executeStep(cmdId, cmdParams);
         } catch ( Exception e ) {
             return error(e.getMessage());
         }
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 01c44af..ac7c199 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -13,10 +13,12 @@ device:
   connections:
     - name : zcancmder
       key : zcancmder
+      enable : true
       type : ZcancmderWebsocket
       uri: ws://192.168.8.10:19005
     - name : modbus
       key : modbus
+      enable : false
       type : ModbusRTUOverTCP
       host: 127.0.0.1
       port: 502