diff --git a/ems-common/pom.xml b/ems-common/pom.xml
index 9bade5d..c28364f 100644
--- a/ems-common/pom.xml
+++ b/ems-common/pom.xml
@@ -119,7 +119,7 @@
             <artifactId>javax.servlet-api</artifactId>
         </dependency>
 
-        <!-- modbus -->
+        <!-- modbus4j (保留兼容) -->
         <dependency>
             <groupId>com.infiniteautomation</groupId>
             <artifactId>modbus4j</artifactId>
@@ -127,4 +127,4 @@
 
     </dependencies>
 
-</project>
\ No newline at end of file
+</project>
diff --git a/ems-common/src/main/java/com/xzzn/common/core/modbus/ModbusProcessor.java b/ems-common/src/main/java/com/xzzn/common/core/modbus/ModbusProcessor.java
index 91ce835..1ea73d9 100644
--- a/ems-common/src/main/java/com/xzzn/common/core/modbus/ModbusProcessor.java
+++ b/ems-common/src/main/java/com/xzzn/common/core/modbus/ModbusProcessor.java
@@ -50,6 +50,8 @@ public class ModbusProcessor {
     private int writeTimeout;
     @Value("${modbus.read-retries:1}")
     private int readRetries;
+    @Value("${modbus.write-retries:1}")
+    private int writeRetries;
 
     @Autowired
     private RedisCache redisCache;
@@ -64,6 +66,7 @@ public class ModbusProcessor {
         try {
             master = connectionManager.borrowMaster(config);
             master.setTimeout(writeTimeout);
+            master.setRetries(0);
             result = writeTagValue(master, config, config.getWriteTags());
         } catch (Exception e) {
             logger.error("Failed to borrow connection or write to devices '{}'", config.getDeviceName(), e);
@@ -91,12 +94,13 @@ public class ModbusProcessor {
         try {
             master = connectionManager.borrowMaster(config);
             master.setTimeout(writeTimeout); // 设置超时时间
+            master.setRetries(0);
 
             // 使用重试装饰器
             ModbusMaster finalMaster = master;
             result = RetryableModbusOperation.executeWithRetry(() -> {
                 return writeTagValue(finalMaster, config, config.getWriteTags());
-            }, 1); // 最大重试1次（共2次尝试）
+            }, writeRetries); // 最大重试次数由配置控制
 
         } catch (Exception e) {
             logger.error("Failed to borrow connection or write to devices '{}'", config.getDeviceName(), e);
diff --git a/ems-quartz/src/main/java/com/xzzn/quartz/task/ModbusPoller.java b/ems-quartz/src/main/java/com/xzzn/quartz/task/ModbusPoller.java
index dcc2098..32a2141 100644
--- a/ems-quartz/src/main/java/com/xzzn/quartz/task/ModbusPoller.java
+++ b/ems-quartz/src/main/java/com/xzzn/quartz/task/ModbusPoller.java
@@ -33,7 +33,9 @@ import java.util.Map;
 import java.util.Objects;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 import javax.annotation.Resource;
 import java.util.stream.Collectors;
@@ -57,6 +59,7 @@ public class ModbusPoller {
     private final ScheduledTask scheduledTask;
     private final ObjectMapper objectMapper = new ObjectMapper();
     private final Map<String, Integer> deviceFailureCounts = new ConcurrentHashMap<>();
+    private final AtomicBoolean polling = new AtomicBoolean(false);
 
     @Resource(name = "modbusExecutor")
     private ExecutorService modbusExecutor;
@@ -89,9 +92,14 @@ public class ModbusPoller {
     }
 
     public void pollAllDevices() {
+        if (!polling.compareAndSet(false, true)) {
+            log.warn("上一次轮询尚未完成，本次轮询跳过");
+            return;
+        }
         Path devicesDir = Paths.get(System.getProperty("user.dir"), "devices");
         if (!Files.exists(devicesDir)) {
             log.error("Devices目录不存在: {}", devicesDir);
+            polling.set(false);
             return;
         }
 
@@ -102,6 +110,7 @@ public class ModbusPoller {
                     .collect(Collectors.toList());
         } catch (IOException e) {
             log.error("modbusPoller.loadConfigs 获取设备配置文件失败: {}", devicesDir, e);
+            polling.set(false);
             return;
         }
 
@@ -124,7 +133,7 @@ public class ModbusPoller {
 
         // 使用单线程 executor 串行执行所有主机的 Modbus 操作
         // 将所有主机的设备按顺序串行处理，避免任何并发访问
-        modbusExecutor.submit(() -> {
+        Future<?> future = modbusExecutor.submit(() -> {
             for (Map.Entry<String, List<DeviceConfig>> entry : groupedByHost.entrySet()) {
                 String hostKey = entry.getKey();
                 List<DeviceConfig> configs = entry.getValue();
@@ -144,6 +153,16 @@ public class ModbusPoller {
                 log.info("采集设备数据{}轮询任务执行完成", hostKey);
             }
         });
+        try {
+            future.get();
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            log.warn("Modbus轮询任务等待中断");
+        } catch (Exception e) {
+            log.error("Modbus轮询任务执行异常", e);
+        } finally {
+            polling.set(false);
+        }
     }
 
     public void scheduledStart(DeviceConfig config) {
diff --git a/ems-quartz/src/main/java/com/xzzn/quartz/task/StrategyPoller.java b/ems-quartz/src/main/java/com/xzzn/quartz/task/StrategyPoller.java
index e24f16d..c06902d 100644
--- a/ems-quartz/src/main/java/com/xzzn/quartz/task/StrategyPoller.java
+++ b/ems-quartz/src/main/java/com/xzzn/quartz/task/StrategyPoller.java
@@ -418,7 +418,7 @@ public class StrategyPoller {
             if (deviceConfig == null) {
                 continue;
             }
-            boolean result = modbusProcessor.writeDataToDevice(deviceConfig);
+            boolean result = modbusProcessor.writeDataToDeviceWithRetry(deviceConfig);
             if (!result) {
                 logger.info("当前站点: {}, PCS设备: {} modbus控制设备{}指令发送失败", siteId, deviceId, chargeStatus.getInfo());
                 continue;
@@ -445,7 +445,7 @@ public class StrategyPoller {
         if (deviceConfig == null) {
             return false;
         }
-        boolean result = modbusProcessor.writeDataToDevice(deviceConfig);
+        boolean result = modbusProcessor.writeDataToDeviceWithRetry(deviceConfig);
         if (!result) {
             logger.info("当前站点: {}, PCS设备: {} modbus控制设备{}指令发送失败", siteId, deviceConfig, workStatus.getInfo());
         }
@@ -491,4 +491,4 @@ public class StrategyPoller {
         return true;
     }
 
-}
\ No newline at end of file
+}