diff --git a/src/protocol/libmms_s/src/mms_s_value.cpp b/src/protocol/libmms_s/src/mms_s_value.cpp
index b1318ef..bfaa2dd 100644
--- a/src/protocol/libmms_s/src/mms_s_value.cpp
+++ b/src/protocol/libmms_s/src/mms_s_value.cpp
@@ -477,7 +477,7 @@ LOCAL void mms_s_da_values_init(stru_icd &icd, std::string da_name, stru_all_DA
             return;
         }
 
-        if(NULL != g_iec61850s_value_init_cb_map[p_all_da->bType])
+        if(NULL != g_iec61850s_value_init_cb_map[p_all_da->bType] && !p_all_da->val.empty())
         {
             g_iec61850s_value_init_cb_map[p_all_da->bType](p_all_da->DA, p_all_da->val);
         }
diff --git a/src/system/RTU/src/main.cpp b/src/system/RTU/src/main.cpp
index 621859f..200d4ea 100644
--- a/src/system/RTU/src/main.cpp
+++ b/src/system/RTU/src/main.cpp
@@ -53,6 +53,7 @@ int main(void)
         MY_LOG_E("app_cfg_parse failed !");
         return -1;
     }
+    
 
     if(0 != app_sys_init())
     {
diff --git a/src/system/libdatacenter/src/dc_param.cpp b/src/system/libdatacenter/src/dc_param.cpp
index 98c1a74..c733bb2 100644
--- a/src/system/libdatacenter/src/dc_param.cpp
+++ b/src/system/libdatacenter/src/dc_param.cpp
@@ -20,7 +20,8 @@ bool dc_param_metadata_lookup(const std::string &saddr, stru_signal_param &out_p
     return false;
 }
 
-int dc_param_cfg_parse(const std::string &path)
+// 解析 param.xml，只提取元数据存入 g_param_metadata，不注册信号
+static int dc_param_parse_metadata(const std::string &path)
 {
     using namespace tinyxml2;
 
@@ -38,7 +39,136 @@ int dc_param_cfg_parse(const std::string &path)
         return -1;
     }
 
-    // 解析 Ao 段：单值参数（一份值 + 一份缺省值）
+    // 解析 Ao 段
+    XMLElement *ao_elem = root->FirstChildElement("Ao");
+    if (ao_elem)
+    {
+        for (XMLElement *sig = ao_elem->FirstChildElement("Signal"); sig != nullptr;
+             sig = sig->NextSiblingElement("Signal"))
+        {
+            const char *saddr = sig->Attribute("saddr");
+            if (nullptr == saddr)
+            {
+                MY_LOG_E("Ao Signal missing saddr, skipping");
+                continue;
+            }
+
+            stru_signal_param param;
+            param.min = sig->FloatAttribute("min", 0.0f);
+            param.max = sig->FloatAttribute("max", 0.0f);
+            param.step = sig->FloatAttribute("step", 0.0f);
+            const char *unit = sig->Attribute("unit");
+            param.unit = unit ? std::string(unit) : std::string();
+
+            g_param_metadata[saddr] = param;
+        }
+    }
+
+    // 解析 Param 段
+    XMLElement *param_elem = root->FirstChildElement("Param");
+    if (param_elem)
+    {
+        for (XMLElement *sig = param_elem->FirstChildElement("Signal"); sig != nullptr;
+             sig = sig->NextSiblingElement("Signal"))
+        {
+            const char *saddr = sig->Attribute("saddr");
+            if (nullptr == saddr)
+            {
+                MY_LOG_E("Param Signal missing saddr, skipping");
+                continue;
+            }
+
+            stru_signal_param param;
+            param.min = sig->FloatAttribute("min", 0.0f);
+            param.max = sig->FloatAttribute("max", 0.0f);
+            param.step = sig->FloatAttribute("step", 0.0f);
+            const char *unit = sig->Attribute("unit");
+            param.unit = unit ? std::string(unit) : std::string();
+
+            g_param_metadata[saddr] = param;
+        }
+    }
+
+    return 0;
+}
+
+// 从 self_param.xml 加载运行时值，返回 saddr → value字符串 的映射
+// Ao段: key=saddr, value="value_attr"
+// Param段: key=saddr + "_" + index, value="value_attr"
+static std::unordered_map<std::string, std::string> dc_self_param_load(const std::string &path)
+{
+    using namespace tinyxml2;
+    std::unordered_map<std::string, std::string> values;
+
+    XMLDocument doc;
+    if (XML_SUCCESS != doc.LoadFile(path.c_str()))
+        return values; // 文件不存在或解析失败，返回空映射
+
+    XMLElement *root = doc.RootElement();
+    if (nullptr == root) return values;
+
+    // 加载 Ao 段值
+    XMLElement *ao_elem = root->FirstChildElement("Ao");
+    if (ao_elem)
+    {
+        for (XMLElement *sig = ao_elem->FirstChildElement("Signal"); sig != nullptr;
+             sig = sig->NextSiblingElement("Signal"))
+        {
+            const char *saddr = sig->Attribute("saddr");
+            const char *val = sig->Attribute("value");
+            if (saddr && val)
+                values[saddr] = std::string(val);
+        }
+    }
+
+    // 加载 Param 段值
+    XMLElement *param_elem = root->FirstChildElement("Param");
+    if (param_elem)
+    {
+        for (XMLElement *sig = param_elem->FirstChildElement("Signal"); sig != nullptr;
+             sig = sig->NextSiblingElement("Signal"))
+        {
+            const char *saddr = sig->Attribute("saddr");
+            if (nullptr == saddr) continue;
+
+            for (XMLElement *item = sig->FirstChildElement("Item"); item != nullptr;
+                 item = item->NextSiblingElement("Item"))
+            {
+                int index = item->IntAttribute("index", -1);
+                const char *val = item->Attribute("value");
+                if (index >= 1 && val)
+                {
+                    std::string key = std::string(saddr) + "_" + std::to_string(index);
+                    values[key] = std::string(val);
+                }
+            }
+        }
+    }
+
+    return values;
+}
+
+// 根据 param.xml 和 self_param.xml 的值生成信号并注册
+static int dc_param_register_signals(const std::string &param_path,
+                                      const std::unordered_map<std::string, std::string> &self_values)
+{
+    using namespace tinyxml2;
+
+    XMLDocument doc;
+    if (XML_SUCCESS != doc.LoadFile(param_path.c_str()))
+    {
+        MY_LOG_E("failed to reload param file: %s", param_path.c_str());
+        return -1;
+    }
+
+    XMLElement *root = doc.RootElement();
+    if (nullptr == root)
+    {
+        MY_LOG_E("param file has no root element");
+        return -1;
+    }
+
+    // 注册 Ao 段信号
     XMLElement *ao_elem = root->FirstChildElement("Ao");
     if (ao_elem)
     {
@@ -61,22 +191,25 @@ int dc_param_cfg_parse(const std::string &path)
                 continue;
             }
 
-            float min = sig->FloatAttribute("min", 0.0f);
-            float max = sig->FloatAttribute("max", 0.0f);
-            float step = sig->FloatAttribute("step", 0.0f);
-            const char *unit = sig->Attribute("unit");
-
-            // Ao 段：从 Signal 属性读取单值
-            const char *val = sig->Attribute("value");
+            // 默认值始终从 param.xml 读取
             const char *default_val = sig->Attribute("default");
 
+            // 运行时值：优先使用 self_param.xml 中的值，否则使用 param.xml 的 value 属性
+            const char *val_attr = sig->Attribute("value");
+            std::string run_val;
+            auto it = self_values.find(std::string(saddr));
+            if (it != self_values.end())
+                run_val = it->second;
+            else if (val_attr && strlen(val_attr) > 0)
+                run_val = std::string(val_attr);
+            else if (default_val && strlen(default_val) > 0)
+                run_val = std::string(default_val);
+
             void *p_data = dc_create_data_ptr_by_type(data_type);
             if (p_data)
             {
-                if (val && strlen(val) > 0)
-                    dc_set_signal_val_from_str(p_data, data_type, std::string(val));
-                else if (default_val && strlen(default_val) > 0)
-                    dc_set_signal_val_from_str(p_data, data_type, std::string(default_val));
+                if (!run_val.empty())
+                    dc_set_signal_val_from_str(p_data, data_type, run_val);
             }
 
             void *p_default_data = dc_create_data_ptr_by_type(data_type);
@@ -88,14 +221,6 @@ int dc_param_cfg_parse(const std::string &path)
 
             if (p_data && p_default_data)
             {
-                stru_signal_param param;
-                param.min = min;
-                param.max = max;
-                param.step = step;
-                param.unit = unit ? std::string(unit) : std::string();
-
-                // 先存入中央元数据表，再注册信号
-                dc_param_metadata_store(saddr, param);
                 dc_signal_ao(saddr, desc, data_type,
                                 SIGNAL_CTRL_TYPE::SBO_NORMAL,
                                 p_data, p_default_data, nullptr);
@@ -103,7 +228,7 @@ int dc_param_cfg_parse(const std::string &path)
         }
     }
 
-    // 解析 Param 段：多值参数（多份值 + 多份缺省值）
+    // 注册 Param 段信号
     XMLElement *param_elem = root->FirstChildElement("Param");
     if (param_elem)
     {
@@ -126,58 +251,49 @@ int dc_param_cfg_parse(const std::string &path)
                 continue;
             }
 
-            float min = sig->FloatAttribute("min", 0.0f);
-            float max = sig->FloatAttribute("max", 0.0f);
-            float step = sig->FloatAttribute("step", 0.0f);
-            const char *unit = sig->Attribute("unit");
+            int num = sig->IntAttribute("num", -1);
+            if (num < 1) continue;
 
             std::vector<void *> vec_p_data;
             std::vector<void *> vec_p_default_data;
 
-            int num = sig->IntAttribute("num", -1);
-            if (num >= 1)
+            for (XMLElement *item = sig->FirstChildElement("Item"); item != nullptr;
+                 item = item->NextSiblingElement("Item"))
             {
-                for (XMLElement *item = sig->FirstChildElement("Item"); item != nullptr;
-                     item = item->NextSiblingElement("Item"))
+                int index = item->IntAttribute("index", -1);
+                const char *default_val = item->Attribute("default");
+                const char *val_attr = item->Attribute("value");
+
+                // 运行时值：优先使用 self_param.xml 中的值
+                std::string key = std::string(saddr) + "_" + std::to_string(index);
+                std::string run_val;
+                auto it = self_values.find(key);
+                if (it != self_values.end())
+                    run_val = it->second;
+                else if (val_attr && strlen(val_attr) > 0)
+                    run_val = std::string(val_attr);
+                else if (default_val && strlen(default_val) > 0)
+                    run_val = std::string(default_val);
+
+                void *p_data = dc_create_data_ptr_by_type(data_type);
+                if (p_data)
                 {
-                    const char *val = item->Attribute("value");
-                    const char *default_val = item->Attribute("default");
-
-                    void *p_data = dc_create_data_ptr_by_type(data_type);
-                    if (p_data)
-                    {
-                        if (val && strlen(val) > 0)
-                            dc_set_signal_val_from_str(p_data, data_type, std::string(val));
-                        else if (default_val && strlen(default_val) > 0)
-                            dc_set_signal_val_from_str(p_data, data_type, std::string(default_val));
-                        vec_p_data.push_back(p_data);
-                    }
-
-                    void *p_default_data = dc_create_data_ptr_by_type(data_type);
-                    if (p_default_data)
-                    {
-                        if (default_val && strlen(default_val) > 0)
-                            dc_set_signal_val_from_str(p_default_data, data_type, std::string(default_val));
-                        vec_p_default_data.push_back(p_default_data);
-                    }
+                    if (!run_val.empty())
+                        dc_set_signal_val_from_str(p_data, data_type, run_val);
+                    vec_p_data.push_back(p_data);
                 }
 
-            }
-            else
-            {
-                continue;
+                void *p_default_data = dc_create_data_ptr_by_type(data_type);
+                if (p_default_data)
+                {
+                    if (default_val && strlen(default_val) > 0)
+                        dc_set_signal_val_from_str(p_default_data, data_type, std::string(default_val));
+                    vec_p_default_data.push_back(p_default_data);
+                }
             }
 
-            if (!vec_p_data.empty())
+            if (!vec_p_data.empty() && vec_p_data.size() == vec_p_default_data.size())
             {
-                stru_signal_param param;
-                param.min = min;
-                param.max = max;
-                param.step = step;
-                param.unit = unit ? std::string(unit) : std::string();
-
-                // 先存入中央元数据表，再注册信号
-                dc_param_metadata_store(saddr, param);
                 dc_signal_param(saddr, desc, data_type,
                                 SIGNAL_CTRL_TYPE::SBO_NORMAL,
                                 vec_p_data.data(), vec_p_default_data.data(), num, nullptr);
@@ -185,5 +301,42 @@ int dc_param_cfg_parse(const std::string &path)
         }
     }
 
+    // 首次注册后标记变更，触发 self_param.xml 生成
+    dc_set_param_cfg_change(true);
+
+    return 0;
+}
+
+int dc_param_cfg_parse(const std::string &path)
+{
+    // 1. 从 param.xml 提取元数据到 g_param_metadata
+    if (0 != dc_param_parse_metadata(path))
+    {
+        MY_LOG_E("dc_param_parse_metadata failed, path:%s", path.c_str());
+        return -1;
+    }
+
+    // 2. 构造 self_param.xml 路径
+    std::string self_path = path;
+    size_t pos = self_path.rfind("param.xml");
+    if (pos != std::string::npos)
+        self_path.replace(pos, 9, "self_param.xml");
+    else
+        self_path = path.substr(0, path.rfind('/') + 1) + "self_param.xml";
+
+    // 3. 尝试加载 self_param.xml 中的运行时值
+    std::unordered_map<std::string, std::string> self_values = dc_self_param_load(self_path);
+    if (!self_values.empty())
+        MY_LOG_I("loaded %zu saved values from self_param.xml", self_values.size());
+    else
+        MY_LOG_I("no self_param.xml found, using default values from param.xml");
+
+    // 4. 用合并后的值注册所有信号
+    if (0 != dc_param_register_signals(path, self_values))
+    {
+        MY_LOG_E("dc_param_register_signals failed");
+        return -1;
+    }
+
     return 0;
 }
diff --git a/src/system/libdatacenter/src/dc_signal.cpp b/src/system/libdatacenter/src/dc_signal.cpp
index 0ca7f20..f4b2e65 100644
--- a/src/system/libdatacenter/src/dc_signal.cpp
+++ b/src/system/libdatacenter/src/dc_signal.cpp
@@ -2177,14 +2177,20 @@ void dc_param_cfg_check(const std::string &path)
     root->InsertEndChild(ao_elem);
     root->InsertEndChild(param_elem);
 
-    if (XML_SUCCESS == doc.SaveFile(path.c_str()))
+    // 保存到 self_param.xml，不覆盖参数模板 param.xml
+    std::string self_path = path;
+    size_t pos = self_path.rfind("param.xml");
+    if (pos != std::string::npos)
+        self_path.replace(pos, 9, "self_param.xml");
+
+    if (XML_SUCCESS == doc.SaveFile(self_path.c_str()))
     {
         dc_set_param_cfg_change(false);
-        MY_LOG_I("param config file saved to %s", path.c_str());
+        MY_LOG_I("param runtime saved to %s", self_path.c_str());
     }
     else
     {
-        MY_LOG_E("failed to save param config file to %s", path.c_str());
+        MY_LOG_E("failed to save param runtime to %s", self_path.c_str());
     }
 }
 
diff --git a/src/system/libiec61850s/src/iec61850s.cpp b/src/system/libiec61850s/src/iec61850s.cpp
index a22fccd..405301a 100644
--- a/src/system/libiec61850s/src/iec61850s.cpp
+++ b/src/system/libiec61850s/src/iec61850s.cpp
@@ -406,7 +406,7 @@ int app_iec61850s_init1(void *arg)
     }
 
 
-    mms_s_dbg_switch(true);
+    mms_s_dbg_switch(false);
     mms_s_file_path_set(base_path.c_str());
     mms_s_value_update_register(&g_mms_s_value_update_cb);
     if(NULL == g_mms_s_value_update_cb)
diff --git a/src/system/libself_ptl/src/self_ptl.cpp b/src/system/libself_ptl/src/self_ptl.cpp
index ab15927..8ee1417 100644
--- a/src/system/libself_ptl/src/self_ptl.cpp
+++ b/src/system/libself_ptl/src/self_ptl.cpp
@@ -892,13 +892,6 @@ int self_ptl_do_signal_out(stru_app *p_app)
         stru_self_ptl_cfg_param_data *p_ao = &p_app_cfg_data->ao_vec.at(i);
         if(p_ao && p_ao->p_param)
         {
-            stru_signal_param param;
-            param.min = safeStringToFloat(p_ao->p_param->min);
-            param.max = safeStringToFloat(p_ao->p_param->max);
-            param.step = safeStringToFloat(p_ao->p_param->step);
-            param.unit = p_ao->p_param->unit;
-            // dc_param_metadata_store(p_ao->p_param->base.saddr, param);
-
             ret |= dc_signal_ao(p_ao->p_param->base.saddr, p_ao->p_param->base.desc, p_ao->p_param->type, SIGNAL_CTRL_TYPE::SBO_NORMAL, p_ao->vec_p_data[0], p_ao->vec_p_default_data[0], self_ptl_signal_change_callback);
         }
     }
@@ -913,14 +906,7 @@ int self_ptl_do_signal_out(stru_app *p_app)
         stru_self_ptl_cfg_param_data *p_param = &p_app_cfg_data->param_vec.at(i);
         if(p_param && p_param->p_param)
         {
-            stru_signal_param param;
-            param.min = safeStringToFloat(p_param->p_param->min);
-            param.max = safeStringToFloat(p_param->p_param->max);
-            param.step = safeStringToFloat(p_param->p_param->step);
-            param.unit = p_param->p_param->unit;
-            // dc_param_metadata_store(p_param->p_param->base.saddr, param);
-
-            ret |= dc_signal_param(p_param->p_param->base.saddr, p_param->p_param->base.desc, p_param->p_param->type, 
+            ret |= dc_signal_param(p_param->p_param->base.saddr, p_param->p_param->base.desc, p_param->p_param->type,
                 SIGNAL_CTRL_TYPE::SBO_NORMAL, p_param->vec_p_data.data(), p_param->vec_p_default_data.data(), p_param->p_param->num, self_ptl_signal_change_callback);
         }
     }