diff --git a/app/lib/a_process/pd_csg.c b/app/lib/a_process/pd_csg.c
index e2e95d5..c18b2ad 100755
--- a/app/lib/a_process/pd_csg.c
+++ b/app/lib/a_process/pd_csg.c
@@ -1001,13 +1001,9 @@ int32_t _csg_config_set_recv(char *pkt)
     pd_config.config.trend_up_period = config->trend_up_period;
     pd_config.config.heartbeat_period = config->heartbeat_period;
     pd_config.config.ch_en_mask = config->ch_en_mask;
-    if (config->sync_mode == 0)
+    if(config->sync_mode < 4)
     {
-       BITMAP_RESET(pd_config.config.pt_B_sync_mode, PD_BIT_PT);
-    }
-    else
-    {
-        BITMAP_SET(pd_config.config.pt_B_sync_mode, PD_BIT_PT);
+        pd_config.config.pt_B_sync_mode = config.sync_mode;
     }
     pd_config.config.pt_internal_period = 1000000000UL / config->pt_internal_period;
     vtysh_config_save();
@@ -1023,7 +1019,6 @@ int32_t _csg_config_set_recv(char *pkt)
 /* 查询用户参数查询报文处理. */
 int32_t _csg_config_get_recv(char *pkt)
 {
-    printf("%s\n", __FUNCTION__);
     csg_pkt_head_t *head = (csg_pkt_head_t*)pkt;
     csg_global_config_t *config = (csg_global_config_t *)(pkt + sizeof(csg_pkt_head_t));
     config->sample_frequency = pd_config.config.sample_frequency;
@@ -1033,14 +1028,7 @@ int32_t _csg_config_get_recv(char *pkt)
     config->trend_up_period = pd_config.config.trend_up_period;
     config->heartbeat_period = pd_config.config.heartbeat_period;
     config->ch_en_mask = pd_config.config.ch_en_mask;
-    if (IS_BITMAP_SET(pd_config.config.pt_B_sync_mode, PD_BIT_PT))
-    {
-        config->sync_mode = 1;
-    }
-    else
-    {
-        config->sync_mode = 0;
-    }
+    config->sync_mode = pd_config.config.pt_B_sync_mode;
     config->pt_internal_period = 1000000000UL / pd_config.config.pt_internal_period;
     _csg_send_data(CSG_PRV_REPLY, head->cmd, pkt, sizeof(csg_global_config_t));
 
@@ -1543,7 +1531,7 @@ void *_csg_heartbeat_handle(void *arg)
         }
 
         /* 发送心跳包. */
-        if (abs(now - t_heartbeat) / pd_config.config.heartbeat_period >= 1/*pd_config.config.heartbeat_period*/)
+        if (abs(now - t_heartbeat) > pd_config.config.heartbeat_period)
         {
             _csg_heartbeat_send();
             t_heartbeat = now;
diff --git a/device-tool/pages/global_params.py b/device-tool/pages/global_params.py
index 32a789c..6603f00 100755
--- a/device-tool/pages/global_params.py
+++ b/device-tool/pages/global_params.py
@@ -9,6 +9,16 @@ from config import Cmd
 
 class GlobalParamsPage(BasePage):
     def __init__(self, parent, tcp_client):
+        # 先定义同步模式映射关系
+        self.sync_mode_mapping = {
+            "PT外同步,B码外同步": 0,
+            "PT内同步,B码外同步": 1, 
+            "PT外同步,B码内同步": 2,
+            "PT内同步,B码内同步": 3
+        }
+        self.reverse_sync_mode_mapping = {v: k for k, v in self.sync_mode_mapping.items()}
+        
+        # 然后调用父类的__init__
         super().__init__(parent, tcp_client, "全局参数")
 
         # 配置样式
@@ -61,7 +71,8 @@ class GlobalParamsPage(BasePage):
             {"label": "心跳包周期", "attr": "heartbeat_period", "type": "spin", "args": (1, 3600), "unit": "s",
              "readonly": False},
             {"label": "通道使能掩码", "attr": "ch_en_mask", "type": "hex_entry", "unit": "", "readonly": False},
-            {"label": "同步模式", "attr": "sync_mode", "type": "combo", "options": ["外同步", "内同步"],
+            {"label": "同步模式", "attr": "sync_mode", "type": "combo", 
+             "options": list(self.sync_mode_mapping.keys()),  # 使用映射的键作为选项
              "readonly": False},
             {"label": "内同步频率", "attr": "pt_internal_period", "type": "spin", "args": (40, 300), "unit": "",
              "readonly": False},
@@ -101,13 +112,9 @@ class GlobalParamsPage(BasePage):
                     entry.configure(state='readonly', style='Readonly.TEntry')
 
             elif field["type"] == "combo":
-                var = tk.StringVar()  # 改为StringVar来存储显示文本
-                # 存储映射关系
-                self.sync_mode_mapping = {"外同步": 0, "内同步": 1}
-                self.reverse_sync_mode_mapping = {0: "外同步", 1: "内同步"}
-                
+                var = tk.StringVar()  # 使用StringVar存储显示文本
                 combobox = ttk.Combobox(parent, textvariable=var,
-                                        values=list(self.sync_mode_mapping.keys()), state="readonly", width=10)
+                                        values=field["options"], state="readonly", width=15)  # 增加宽度以适应更长的文本
                 combobox.grid(row=i, column=1, sticky='w', padx=2, pady=2)
 
             else:  # entry
@@ -192,11 +199,12 @@ class GlobalParamsPage(BasePage):
             self.ch_en_mask_var.set(f"0x{config.ch_en_mask:02X}")
 
             # 同步模式：将数字值转换为对应的文本显示
-            sync_mode_text = self.reverse_sync_mode_mapping.get(config.sync_mode, "外同步")
+            sync_mode_text = self.reverse_sync_mode_mapping.get(config.sync_mode, "PT外同步,B码外同步")
             self.sync_mode_var.set(sync_mode_text)
             
             self.pt_internal_period_var.set(config.pt_internal_period)
 
+            print(f"同步模式设置: {config.sync_mode} -> {sync_mode_text}")
             print("全局参数读取成功")
 
         except Exception as e: