diff --git a/BLE/DLD154Pro_Peripheral_28K/APP/rs485_modbus.c b/BLE/DLD154Pro_Peripheral_28K/APP/rs485_modbus.c
index 3a290ee..d777097 100644
--- a/BLE/DLD154Pro_Peripheral_28K/APP/rs485_modbus.c
+++ b/BLE/DLD154Pro_Peripheral_28K/APP/rs485_modbus.c
@@ -78,6 +78,7 @@ static uint16_t crc16(const uint8_t *data, uint8_t len)
 extern uint8_t  _rx_buf[16];
 extern uint8_t  _rx_len;
 extern uint32_t _rx_last_tick;
+extern uint8_t  loop1_LOOP_OK;   /* 线圈连接状态 (1=正常, 0=断开) */
 
 /*===========================================================================
  * Modbus 协议状态
@@ -100,6 +101,9 @@ static uint32_t _misc_time_value = 0;        /* 时间值 (10ms 单位) */
 /* 计数器 (上电清零) */
 static uint32_t _relay_engage_cnt = 0;       /* 继电器吸合累计次数 */
 
+/* 线圈状态追踪 (断开/重连 事件触发) */
+static uint8_t  _last_loop_ok = 0;           /* 线圈连接状态快照 (边沿检测) */
+
 /*===========================================================================
  * 主动上报 — 全数据块组装 & 发送
  *===========================================================================*/
@@ -282,6 +286,20 @@ static void modbus_report_schedule(void)
         }
     }
 
+    /* 线圈断开/重连 → 立即上报 (对齐 700BS 行为) */
+    {
+        uint8_t loop_ok = loop1_LOOP_OK;
+        if (loop_ok != _last_loop_ok) {
+            _last_loop_ok = loop_ok;
+            update_misc_time();
+            send_full_data();
+            _rpt_last_ms = mstick();
+            _rpt_hyst_cnt = 0;
+            _rpt_active = is_active();
+            return;
+        }
+    }
+
     uint32_t now     = mstick();
     uint32_t elapsed = now - _rpt_last_ms;
 
@@ -770,6 +788,7 @@ void modbus_init(void)
     _rpt_active          = 0;
     _rpt_hyst_cnt        = 0;
     _last_relay_state    = g_loop_acs_info.relay1_state;
+    _last_loop_ok         = loop1_LOOP_OK;
     _last_relay_off_10ms = 0;
     _last_relay_on_10ms  = 0;
     _misc_time_type      = 0xFFFF;