diff --git a/app/include/cmd.h b/app/include/cmd.h
index 7474121..44bb6ca 100755
--- a/app/include/cmd.h
+++ b/app/include/cmd.h
@@ -230,10 +230,10 @@ typedef struct{
     char hostname[FILE_NAME_LEN];   // 设备名 128byte
     uint32_t factory_date;          // 出厂日期.
     uint32_t deployment_date;       // 部署日期.
-    uint8_t app_version[32];        // 软件版本
-    uint8_t app_compile_time[32];   // 软件编译时间
-    uint8_t hardware_version[32];   // 硬件版本
-    uint8_t FPGA_version[32];       // fpga版本
+    uint8_t app_version[DEV_VERSION_STR_LEN];       // 软件版本
+    uint8_t app_compile_time[DEV_VERSION_STR_LEN];  // 软件编译时间
+    uint8_t hardware_version[DEV_VERSION_STR_LEN];  // 硬件版本
+    uint8_t FPGA_version[DEV_VERSION_STR_LEN];      // fpga版本
     uint32_t ip;                    // 本机 IP.
     uint32_t mask;                  // 本机 MASK.
     uint32_t gw;                    // 本机网关
@@ -249,8 +249,6 @@ typedef struct
     int lines;                      /* System wide terminal lines. */
     char *version;                  /* 版本号. */
     char *compile;                  /* 编译时间. */
-    char *hardversion;                  /* 硬件版本号. */
-    char *FPGAversion;                  /* PFGA版本号. */
     char configfile[FILE_NAME_LEN]; /* config file name of this host */
     char bannerfile[FILE_NAME_LEN]; /* Banner configuration file name. */
 } host_t;
diff --git a/app/include/common.h b/app/include/common.h
index 6ce1c9d..c5570d1 100755
--- a/app/include/common.h
+++ b/app/include/common.h
@@ -85,6 +85,7 @@
 #define DEV_DATA_LEN 1000
 #define DEV_DATA_BITMAP_LEN 8
 #define DEV_NAME_STR_LEN 32
+#define DEV_VERSION_STR_LEN 32
 #define THREAD_NAME_LEN 32
 
 /* Does the I/O error indicate that the operation should be retried later? */
diff --git a/app/include/pd_csg.h b/app/include/pd_csg.h
index c49904b..4d281c9 100755
--- a/app/include/pd_csg.h
+++ b/app/include/pd_csg.h
@@ -333,10 +333,10 @@ typedef struct
     char hostname[FILE_NAME_LEN];   // 设备名 128byte
     uint32_t factory_date;          // 出厂日期.
     uint32_t deployment_date;       // 部署日期.
-    uint8_t app_version[32];        // 软件版本
-    uint8_t app_compile_time[32];   // 软件编译时间
-    uint8_t hardware_version[32];   // 硬件版本
-    uint8_t FPGA_version[32];       // fpga版本
+    uint8_t app_version[DEV_VERSION_STR_LEN];       // 软件版本
+    uint8_t app_compile_time[DEV_VERSION_STR_LEN];  // 软件编译时间
+    uint8_t hardware_version[DEV_VERSION_STR_LEN];  // 硬件版本
+    uint8_t FPGA_version[DEV_VERSION_STR_LEN];      // fpga版本
     uint32_t ip;                    // 本机 IP.
     uint32_t mask;                  // 本机 MASK.
     uint32_t gw;                    // 本机网关
diff --git a/app/include/pd_dau.h b/app/include/pd_dau.h
index c170c25..81b9060 100755
--- a/app/include/pd_dau.h
+++ b/app/include/pd_dau.h
@@ -46,16 +46,17 @@
 #include "common.h"
 
 /* Define --------------------------------------------------------------------*/
-#define BUFFER_SIZE 2048
 #define DAU_ETH_SLOTS_SUM 4
-#define RS485_SLOTS 2
+#define RS485_SLOTS 2
+#define DAU_BUF_SIZE 1536
+
 
 
 #define UHF         "UDP_UHF"
 #define HF          "UDP_HF"
 #define ULTRASONIC  "UDP_ULTRASONIC"
 #define IRONCORE    "RS485_IRONCORE"
-#define UDP_PORT    5000
+
 
 
 
@@ -179,13 +180,25 @@ typedef struct
 
     dau_info_t info;
 } dau_manager_t;
-
-typedef struct {
-    int slot;
-    DauType type;
-    DauState state;
+
+/* DAU 状态结构体 */
+typedef struct
+{
+    uint8_t is_insert:1;
+    uint8_t is_connect:1;
+} dau_state_t;
+
+/* DAU 全局结构体 */
+typedef struct
+{
+    uint8_t slot;
+    DauType type;
+    int fd;
+    char buf_recv[DAU_BUF_SIZE];
+    DauState stat;
     void *private_data;
-    dau_info_t info;
+    dau_info_t info;
+    dau_state_t state;
 } dau_t;
 
 /* Exported macro ------------------------------------------------------------*/
diff --git a/app/lib/a_process/pd_csg.c b/app/lib/a_process/pd_csg.c
index a6f40a2..e5df2c7 100755
--- a/app/lib/a_process/pd_csg.c
+++ b/app/lib/a_process/pd_csg.c
@@ -216,10 +216,10 @@ int32_t _csg_connect_send(void)
     strncpy(pinfo->hostname, host.name, sizeof(pinfo->hostname)-1);
     pinfo->factory_date = device_info.factory_date;
     pinfo->deployment_date = device_info.deployment_date;
-    strncpy((char *)pinfo->app_version, host.version, sizeof(pinfo->app_version)-1);
-    strncpy((char *)pinfo->app_compile_time, host.compile, sizeof(pinfo->app_compile_time)-1);
-    strncpy((char *)pinfo->hardware_version, host.hardversion, 31);
-    strncpy((char *)pinfo->FPGA_version, host.FPGAversion, 31);
+    snprintf((char*)pinfo->app_version, DEV_VERSION_STR_LEN, "%s", device_info.app_version);
+    snprintf((char*)pinfo->app_compile_time, DEV_VERSION_STR_LEN, "%s", device_info.app_compile_time);
+    snprintf((char*)pinfo->hardware_version, DEV_VERSION_STR_LEN, "%s", device_info.hardware_version);
+    snprintf((char*)pinfo->FPGA_version, DEV_VERSION_STR_LEN, "%s", device_info.FPGA_version);
     pinfo->ip = device_info.ip;
     pinfo->mask = device_info.mask;
     pinfo->gw = device_info.gw;
@@ -364,7 +364,7 @@ int32_t _csg_dev_info_set_recv(char *pkt)
 
     if (strncmp((char *)(pinfo->hostname), device_info.hostname, sizeof(device_info.hostname)))
     {
-        snprintf((char*)device_info.hostname, PD_DEV_NUM_LEN, "%s", pinfo->hostname);
+        snprintf((char*)device_info.hostname, FILE_NAME_LEN, "%s", pinfo->hostname);
         boottype = REBOOT_REMOTE_HOST_NAME_CHANGE;
     }
 
@@ -421,10 +421,10 @@ int32_t _csg_dev_info_get_recv(char *pkt)
     strcpy(pinfo->hostname, device_info.hostname);
     pinfo->factory_date = device_info.factory_date;
     pinfo->deployment_date = device_info.deployment_date;
-    strncpy((char *)pinfo->app_compile_time, host.compile, 31);
-    strncpy((char *)pinfo->app_version, host.version, 31);
-    strncpy((char *)pinfo->hardware_version, host.hardversion, 31);
-    strncpy((char *)pinfo->FPGA_version, host.FPGAversion, 31);
+    snprintf((char*)pinfo->app_version, DEV_VERSION_STR_LEN, "%s", device_info.app_version);
+    snprintf((char*)pinfo->app_compile_time, DEV_VERSION_STR_LEN, "%s", device_info.app_compile_time);
+    snprintf((char*)pinfo->hardware_version, DEV_VERSION_STR_LEN, "%s", device_info.hardware_version);
+    snprintf((char*)pinfo->FPGA_version, DEV_VERSION_STR_LEN, "%s", device_info.FPGA_version);
     pinfo->ip = device_info.ip;
     pinfo->mask = device_info.mask;
     pinfo->gw = device_info.gw;
@@ -486,10 +486,10 @@ int32_t _csg_config_get_recv(char *pkt)
 /* 通道提交端口参数设置. */
 int32_t _csg_port_config_set_recv(char *pkt)
 {
-    uint8_t vport = *(uint8_t*)(pkt + CSG_HEAD_LEN);
+    //uint8_t vport = *(uint8_t*)(pkt + CSG_HEAD_LEN);
     uint8_t unit = 0;
     uint8_t port = 0;
-    csg_pkt_head_t *head = (csg_pkt_head_t*)pkt;
+    //csg_pkt_head_t *head = (csg_pkt_head_t*)pkt;
     csg_config_port_t *pnet = (csg_config_port_t *)(pkt + CSG_HEAD_LEN);
     
     pd_config.config_port[unit][port].vport = pnet->vport;
@@ -535,7 +535,7 @@ int32_t _csg_port_config_get_recv(char *pkt)
     uint8_t unit = 0;
     uint8_t port = 0;
     csg_pkt_head_t *head = (csg_pkt_head_t*)pkt;
-    csg_config_port_t *pnet = (csg_config_port_t *)(pkt + CSG_HEAD_LEN);
+    //csg_config_port_t *pnet = (csg_config_port_t *)(pkt + CSG_HEAD_LEN);
 
     //if (dau_vport_to_port(pnet->vport, &unit, &port) != E_NONE)
     {
diff --git a/app/lib/a_process/pd_dau.c b/app/lib/a_process/pd_dau.c
index 49f38ee..2a186a7 100755
--- a/app/lib/a_process/pd_dau.c
+++ b/app/lib/a_process/pd_dau.c
@@ -27,16 +27,58 @@
 #include "pd_csg.h"
 
 /* Define --------------------------------------------------------------------*/
+#define DUA_UDP_PORT    23760
+
+/* Private typedef -----------------------------------------------------------*/
+/* 上传平台回调函数类型 */
+typedef void (*UploadCallback)(int slot, const void *data, size_t len);
+
+/* 报文头 */
+typedef struct
+{
+    uint16_t len;
+    uint8_t dev_type_m;
+    uint8_t dev_type_s;
+    uint32_t dev_id;
+    uint8_t cmd_type;
+    uint8_t cmd;
+    uint16_t pkt_id;
+    uint8_t version;
+    uint8_t reserve[19];
+} dau_pkt_head_t;
+
+/* 开机联络 */
+typedef struct 
+{
+    uint8_t type_m;                 // 主设备号
+    uint8_t type_s;                 // 次设备号
+    uint8_t reserved1[2];           // 保留
+    uint32_t dev_id;                // 设备ID
+    char hostname[FILE_NAME_LEN];   // 设备名 128byte
+    uint32_t factory_date;          // 出厂日期.
+    uint32_t deployment_date;       // 部署日期.
+    uint8_t app_version[32];        // 软件版本
+    uint8_t app_compile_time[32];   // 软件编译时间
+    uint8_t hardware_version[32];   // 硬件版本
+    uint8_t FPGA_version[32];       // fpga版本
+    uint32_t ip;                    // 本机 IP.
+    uint32_t mask;                  // 本机 MASK.
+    uint32_t gw;                    // 本机网关
+    uint8_t mac[6];                 // MAC地址.
+    uint16_t server_port;           // 服务器端口号.
+    uint32_t server_ipv4;           // 服务器 IP.
+    uint8_t port[8];
+    uint8_t port_type[8];
+} dau_contact_t;
 
 /* Private variables ---------------------------------------------------------*/
-
-//dau_t dau;
 pthread_mutex_t board_mutex = PTHREAD_MUTEX_INITIALIZER;
 int udp_socket;
 dau_t daus[PD_SLOTS_MAX];
+
+
 
-// 上传平台回调函数类型
-typedef void (*UploadCallback)(int slot, const void *data, size_t len);
+
 
 /* Private function prototypes -----------------------------------------------*/
 int _dau_insert(int slot, DauType type);
@@ -287,7 +329,7 @@ static int32_t _dau_find_proper_function(char *pkt)
         if (daus[i].slot != head->slot)
             continue;
 
-        if (daus[i].state == DAU_STATE_REGISTERED)
+        if (daus[i].stat == DAU_STATE_REGISTERED)
         {
             flag = 1;
         }
@@ -507,7 +549,7 @@ int _dau_insert(int slot, DauType type)
     
     pthread_mutex_lock(&board_mutex);
     
-    if (daus[slot].state != DAU_STATE_DISCONNECTED) 
+    if (daus[slot].stat != DAU_STATE_DISCONNECTED) 
     {
         pthread_mutex_unlock(&board_mutex);
         return E_ERROR;
@@ -523,7 +565,7 @@ int _dau_insert(int slot, DauType type)
 
     // 更新板卡信息
     daus[slot].type = type;
-    daus[slot].state = DAU_STATE_CONNECTED;
+    daus[slot].stat = DAU_STATE_CONNECTED;
     daus[slot].private_data = priv_data;
     daus[slot].slot = slot;
 
@@ -538,7 +580,7 @@ void _dau_remove(int slot)
 {
     pthread_mutex_lock(&board_mutex);
     
-    if (daus[slot].state == DAU_STATE_DISCONNECTED) 
+    if (daus[slot].stat == DAU_STATE_DISCONNECTED) 
     {
         pthread_mutex_unlock(&board_mutex);
         return;
@@ -549,7 +591,7 @@ void _dau_remove(int slot)
     
     // 重置板卡信息
     daus[slot].type = DAU_TYPE_NONE;
-    daus[slot].state = DAU_STATE_DISCONNECTED;
+    daus[slot].stat = DAU_STATE_DISCONNECTED;
     daus[slot].private_data = NULL;
 
     pthread_mutex_unlock(&board_mutex);
@@ -612,45 +654,10 @@ int main() {
 }
 #endif
 
-// 初始化UDP服务器
-int _dau_init_udp_server() 
-{
-    int sock = socket(AF_INET, SOCK_DGRAM, 0);
-    if (sock < 0) 
-    {
-        perror("UDP socket creation failed");
-        return -1;
-    }
-
-    struct sockaddr_in server_addr = 
-    {
-        .sin_family = AF_INET,
-        .sin_port = htons(UDP_PORT),
-        .sin_addr.s_addr = INADDR_ANY
-    };
-
-    if (bind(sock, (struct sockaddr*)&server_addr, sizeof(server_addr)))
-    {
-        perror("UDP bind failed");
-        close(sock);
-        return -1;
-    }
-    return sock;
-}
+
 
 
-void *_dau_manager_handle(void *arg)
-{
-    prctl(PR_SET_NAME, "CSG_RCVE", 0, 0, 0);
-
-    while(1)
-    {
-        sleep(1);
-       
-    }
 
-    return NULL;
-}
 
 void *_dau_udp_receive_handle(void *arg)
 {
@@ -674,7 +681,7 @@ void *_dau_udp_receive_handle(void *arg)
         for (int i = 0; i < DAU_ETH_SLOTS_SUM; i++) 
         {
             //printf("state=%d\n", daus[i].state);
-            if (daus[i].state == DAU_STATE_DISCONNECTED) 
+            if (daus[i].stat == DAU_STATE_DISCONNECTED) 
                 continue;
             
             udp_client_data *client = (udp_client_data *)daus[i].private_data;
@@ -684,11 +691,11 @@ void *_dau_udp_receive_handle(void *arg)
             }
             
             // 如果是新连接
-            if (daus[i].state == DAU_STATE_CONNECTED && 
+            if (daus[i].stat == DAU_STATE_CONNECTED && 
                 client->addr.sin_port == 0) 
             {
                 memcpy(&client->addr, &client_addr, sizeof(client_addr));
-                daus[i].state = DAU_STATE_REGISTERED;
+                daus[i].stat = DAU_STATE_REGISTERED;
                 break;
             }
         }
@@ -705,11 +712,117 @@ void *_dau_udp_receive_handle(void *arg)
 
     return NULL;
 }
-
+
+/* 初始化UDP服务器 */
+int32_t _dau_udp_server_init(dau_t *dau) 
+{
+    struct sockaddr_in server = {0};
+    int fd = -1;
+
+    fd = socket(AF_INET, SOCK_DGRAM, 0);
+    if (fd < 0) 
+    {
+        log_err(LOG_DAU, "ERROR at socket creating return %s!", safe_strerror(errno));
+        return E_SYS_CALL;
+    }
+    
+    /* 绑定端口 */
+    bzero(&server, sizeof(server));
+    server.sin_family = AF_INET;
+    server.sin_addr.s_addr = htonl(INADDR_ANY);
+    server.sin_port = htons(DUA_UDP_PORT);
+    if (bind(fd, (struct sockaddr*)&server, sizeof(server)) < 0)
+    {
+        log_err(LOG_DAU, "ERROR at socket bind return %s!", safe_strerror(errno));
+        close(fd);
+        return E_SYS_CALL;
+    }
+
+    dau->fd = fd;
+    return E_NONE;
+}
+
+/* 校验收到包的包头, 长度, 校验码. */
+int32_t _dau_pkt_check(char *pkt)
+{
+    csg_pkt_head_t *head = (csg_pkt_head_t*)pkt;
+
+    /* 对主次设备号进行识别, 次设备号可以是广播. */
+    if (head->dev_type_m != device_info.type_m)
+    {
+        DBG(DBG_M_PD_CSG_ERR, "@1 type_m=%d  %d\r\n", head->dev_type_m, device_info.type_m);
+        return E_ERROR;
+    } 
+
+    if (head->len > DAU_BUF_SIZE)
+    {
+        DBG(DBG_M_PD_CSG_ERR, "@2 receive packet len(%d) is out of range\r\n", head->len);
+        return E_ERROR;
+    }
+    
+    return E_NONE;
+}
+
+/* dau 数据包处理函数 */
+void _dau_recv_data_process(dau_t *dau, uint16_t recv_len)
+{
+    
+}
+
+/* dau 开机联络处理函数 */
+void _dau_recv_connect_process(dau_t *dau, uint16_t recv_len)
+{
+    
+}
+
+/* dau 收包线程 */
+void *_dau_recv_handle(void *arg)
+{
+    dau_t *dau = (dau_t*)arg;
+    struct sockaddr_in server;
+    socklen_t server_len;
+    uint16_t data_len = 0;
+
+    /* 初始化 socket */
+    if (_dau_udp_server_init(dau) != E_NONE)
+    {
+        return NULL;
+    }
+
+    while(1)
+    {
+        /* 读取数据. */
+        data_len = recvfrom(dau->fd, dau->buf_recv, DAU_BUF_SIZE, 0, (struct sockaddr*)&server, &server_len);
+        if (data_len <= 0)
+        {
+            DBG(DBG_M_PD_DAU_ERR, "Recvfrom return ERROR %s!\r\n", safe_strerror(errno));
+            continue;
+        }
+
+        if (dau->state.is_connect)
+        {
+            _dau_recv_data_process(dau, data_len);
+        }
+        else
+        {
+            _dau_recv_connect_process(dau, data_len);
+        }
+    }
+
+    return NULL;
+}
+
 /* dau 预初始化 */
 int32_t dau_handle_init(void)
 {
+    uint8_t i = 0;
+    
     memset(&daus, 0, sizeof(dau_t) * PD_SLOTS_MAX);
+
+    for (i = 0; i < PD_SLOTS_MAX; i++) 
+    {
+        daus[i].slot = i;
+    }
     
     cmd_install_element(COMMON_NODE, &dau_add_cmd);
     cmd_install_element(COMMON_NODE, &no_dau_add_cmd);
@@ -723,19 +836,14 @@ int32_t dau_handle_init_after(void)
     thread_param_t param = {0};
     uint8_t i = 0;
 
-    if (0 == udp_socket)
-    {
-        udp_socket = _dau_init_udp_server();
-    }
-    printf("udp_socket=%d\n", udp_socket);
-    /* 初始化模块. */
-    
-
+    /* 初始收包线程 */
     for (i = 0; i < DAU_ETH_SLOTS_SUM; i++) 
     {
+        param.arg = (void*)(&daus[i]);
         param.priority = 80;
+        param.log_module = LOG_DAU;
         snprintf(param.thread_name, THREAD_NAME_LEN, "DAU_RECV_%d", i);
-        create_thread(_dau_manager_handle, &param);
+        create_thread(_dau_recv_handle, &param);
     }
     
     return E_NONE;
diff --git a/app/lib/m_management/cmd.c b/app/lib/m_management/cmd.c
index 7386ce9..0319e8a 100755
--- a/app/lib/m_management/cmd.c
+++ b/app/lib/m_management/cmd.c
@@ -2332,8 +2332,6 @@ void cmd_init(void)
     strncpy(host.configfile, "startup-config", FILE_NAME_LEN);
     host.version = softversion_get();
     host.compile = softversion_date_get();
-    host.hardversion = hardware_version_get();
-    host.FPGAversion = fpga_version_date_get();
     host.lines = -1;
 
     /* 安装命令行模式节点. */
@@ -2845,8 +2843,9 @@ void vtysh_device_init(void)
     }
     else
     {
+        memset(&device_info, 0, sizeof(device_info_t));
         device_info.type_m = 3;
-        device_info.type_s = 1;
+        device_info.type_s = 128;
         inet_aton(DEV_INFO_DEFAULT_IP, &server.sin_addr);
         device_info.ip = server.sin_addr.s_addr;
         inet_aton(DEV_INFO_DEFAULT_MASK, &server.sin_addr);
@@ -2855,10 +2854,8 @@ void vtysh_device_init(void)
         device_info.gw = server.sin_addr.s_addr;
         device_info.factory_date = 1745317827;
         device_info.deployment_date = 1745317827;
-        strncpy((char *)device_info.app_version, host.version, 31);
-        strncpy((char *)device_info.app_compile_time, host.compile, 31);
-        strncpy((char *)device_info.hardware_version, host.hardversion, 31);
-        strncpy((char *)device_info.FPGA_version, host.FPGAversion, 31);
+        snprintf((char *)device_info.app_version, DEV_VERSION_STR_LEN, "%s", host.version);
+        snprintf((char *)device_info.app_compile_time, DEV_VERSION_STR_LEN, "%s", host.compile);
         device_info.dev_id = 0x6010FFFF;
         strncpy((char *)device_info.hostname, "LandPower", FILE_NAME_LEN);
 
diff --git a/build/version.c b/build/version.c
index cd2f977..ef798d3 100644
--- a/build/version.c
+++ b/build/version.c
@@ -10,14 +10,3 @@ char* softversion_date_get()
     return SOFT_COMPILE_DATE;
 }
 
-char* hardware_version_get()
-{
-    return HARDV_ERSION;
-}
-
-char* fpga_version_date_get()
-{
-    return FPGA_VERSION;
-}
-
-