diff --git a/lab-service/lab-iot/src/main/java/org/springblade/iot/utils/ReadModBusUtil.java b/lab-service/lab-iot/src/main/java/org/springblade/iot/utils/ReadModBusUtil.java
index 7da74ed..041b6a1 100644
--- a/lab-service/lab-iot/src/main/java/org/springblade/iot/utils/ReadModBusUtil.java
+++ b/lab-service/lab-iot/src/main/java/org/springblade/iot/utils/ReadModBusUtil.java
@@ -24,25 +24,6 @@ public class ReadModBusUtil {
         }
     }
 
-    public static void main(String[] args) throws InterruptedException {
-        // 1.获取tcp协议的主机(上位机)
-        ModbusMaster master = getTcpMaster("192.168.1.217", 502, 1);
-        // 2.初始化
-        try {
-            master.init();
-            while (0 == 0) {
-                // 3.读取保持寄存器数据
-                readHoldingRegistersTest(master, 1, 0, 10);
-                Thread.sleep(1000L);
-            }
-        } catch (ModbusInitException e) {
-            e.printStackTrace();
-        } finally {
-            // 销毁连接
-            master.destroy();
-        }
-    }
-
     /**
      * 2
      */
@@ -66,7 +47,7 @@ public class ReadModBusUtil {
      * @param start   起始地址的偏移量
      * @param len     待读寄存器的个数
      */
-    private static void readHoldingRegistersTest(ModbusMaster master, int slaveId, int start, int len) {
+    public static void readHoldingRegistersTest(ModbusMaster master, int slaveId, int start, int len) {
         try {
             ReadHoldingRegistersRequest request = new ReadHoldingRegistersRequest(slaveId, start, len);
             ReadHoldingRegistersResponse response = (ReadHoldingRegistersResponse) master.send(request);