diff --git a/EdgeManager.php b/EdgeManager.php
index 465a932..9d85985 100644
--- a/EdgeManager.php
+++ b/EdgeManager.php
@@ -175,6 +175,15 @@ $worker -> onMessage = function(TcpConnection $connection, Request $request) {
                         'errmsg' => '节点编码和数值类型不匹配！'
                     )));
                     $connection -> send($response);
+                } else if ($data_capture -> check_res === 'NO_DEVICE_CODE') {
+                    $response = new Response(200, [
+                        'Content-Type' => 'application/json;charset=utf-8',
+                    ], json_encode(array(
+                        'action' => 'result_set_node_data',
+                        'errcode' => 4002,
+                        'errmsg' => 'device_code为必填字段！'
+                    )));
+                    $connection -> send($response);
                 }
                 $res = $data_capture -> set_node_data();
                 if ($res === true) {
diff --git a/EdgeManager/EDataCapture/EDataCapture.php b/EdgeManager/EDataCapture/EDataCapture.php
index 447f1f2..d6e311f 100644
--- a/EdgeManager/EDataCapture/EDataCapture.php
+++ b/EdgeManager/EDataCapture/EDataCapture.php
@@ -51,13 +51,18 @@ class EDataCapture {
                 if (!$check_func($row -> value)) {
                     $this -> check_res = 'MISMATCH_TYPE';
                     return;
-                } else {
-                    $this -> data[$row -> code][] = [
-                        'value' => $row -> value,
-                        'device_code' => $row -> device_code ?? NULL,
-                        'batch' => $row -> batch ?? NULL
-                    ];
                 }
+
+                if (!isset($row -> device_code)) {
+                    $this -> check_res = 'NO_DEVICE_CODE';
+                    return;
+                }
+                $this -> data[$row -> code][] = [
+                    'value' => $row -> value,
+                    'device_code' => $row -> device_code,
+                    'parent_code' => $row -> parent_code ?? NULL,
+                    'batch' => $row -> batch ?? NULL
+                ];
             }
             unset($row);
         }
@@ -78,7 +83,8 @@ class EDataCapture {
                         "('%s', '%s', '%s', '%s')",
                         $code,
                         $row['value'] === false ? 'f' : $row['value'],
-                        $row['device_code'] ?? NULL,
+                        $row['device_code'],
+                        $row['parent_code'] ?? NULL,
                         $row['batch'] ?? NULL
                     );
                 }
diff --git a/EdgeManager/EDataCapture/ENodeConfigure.php b/EdgeManager/EDataCapture/ENodeConfigure.php
index e651da4..5d56c38 100644
--- a/EdgeManager/EDataCapture/ENodeConfigure.php
+++ b/EdgeManager/EDataCapture/ENodeConfigure.php
@@ -38,12 +38,13 @@ class ENodeConfigure {
         $res[] = pg_query($this -> dbconn, sprintf(
             'CREATE TABLE IF NOT EXISTS "%s" (
                 id serial8,
-                code text,
+                code text NOT NULL,
                 v_string text,
                 v_int int,
                 v_float float8,
                 v_bool bool,
-                device_code text,
+                device_code text NOT NULL,
+                parent_code text,
                 batch text,
                 capture_time timestamp NOT NULL DEFAULT NOW()
             )', $table_name
diff --git a/README.md b/README.md
index 611112a..5657ce6 100644
--- a/README.md
+++ b/README.md
@@ -32,19 +32,21 @@
 {
     "action": "set_node_data",
     "param": {
-        "working_subclass": <string>,
+        "working_subclass": <string>,  // 可选
         "data": [
             {
                 "code": <string>,
                 // value的类型需与type对应
                 "value": <string | int | float | bool>,
-                "device_code": [string],
-                "batch": [string]
+                "device_code": [string],  // 必需字段
+                "parent_code": [string],  // 可选字段，对应MES中的code
+                "batch": [string]  // 可选字段
             },
             {
                 "code": <string>,
                 "value": <string | int | float | bool>,
                 "device_code": [string],
+                "parent_code": [string],
                 "batch": [string]
             },
             ...