diff --git a/Modbus_communication/Modbus_TCP/common.cpp b/Modbus_communication/Modbus_TCP/common.cpp
index 68ad345..55c16d9 100644
--- a/Modbus_communication/Modbus_TCP/common.cpp
+++ b/Modbus_communication/Modbus_TCP/common.cpp
@@ -290,4 +290,44 @@ void Crate_MBAP(UINT8 *Message, int Function_code, unsigned int Operations_Numbe
 	Message[4] = 0x00;
 	Message[5] = Count_Write_date_number(Function_code, Operations_Number) + 0x06;
 	Message[6] = DEVICE_ID;
-}
\ No newline at end of file
+}
+
+/*********************************************************************************************
+* 功能    ：	字符串转UINT8类型
+* 描述	  ：	根据写入数量和功能码类型输入相应的数据
+* 输入    ：    *Message 消息帧存放的数组   Write_date 要转换的字符串   
+*				Message_len消息帧数组的起始位置
+* 输出    ：    Message_len 消息帧的长度
+*********************************************************************************************/
+int HexStringtoByte(UINT8 *Message, string Write_date, int Message_len)
+{
+	const char *b = Write_date.c_str();
+	for (int i = 0; i + 3 < Write_date.length(); i = i + 3)
+	{
+		sscanf_s(b + i, "%02X", (int *)(Message + Message_len));
+		Message_len++;
+	}
+	sscanf_s(b + Write_date.length() - 2, "%02X", (int *)(Message + Message_len));
+	return ++Message_len;
+}
+
+/*********************************************************************************************
+* 功能    ：	生成TCP模式下的消息帧
+* 描述	  ：	根据要写入的数据生成消息帧
+* 输入    ：    *Message 消息帧存放的数组   Write_date 写入数据的字符串
+*				Function_code 功能码   Operations_Number 操作数量  Starting_address起始地址
+* 输出    ：    消息帧的总长度
+*********************************************************************************************/
+int Crate_TCP_Message(UINT8 *Message, int Function_code, unsigned int Operations_Number, unsigned int Starting_address, string Write_date)
+{
+
+	Crate_MBAP(Message, Function_code, Operations_Number);
+	Message[7] = Function_code;//功能码
+	Message[8] = Starting_address >> 8;//起始地址H
+	Message[9] = Starting_address;//起始地址L
+	Message[10] = Operations_Number >> 8;//操作数量H
+	Message[11] = Operations_Number;//操作数量L
+
+	return HexStringtoByte(Message, Write_date, 12);
+	
+}
diff --git a/Modbus_communication/Modbus_TCP/main.cpp b/Modbus_communication/Modbus_TCP/main.cpp
index 828c3f5..0dba8b0 100644
--- a/Modbus_communication/Modbus_TCP/main.cpp
+++ b/Modbus_communication/Modbus_TCP/main.cpp
@@ -1,28 +1,14 @@
 #include "main.h"
-//#include <stdlib.h>
+
 #define DEVICE_ID 0x10
-void test(UINT8 *Message)
-{
-	Message[7] = 0x10;
-}
 
 int main()
 {
-	int Operations_Number = 4;
 	UINT8 Message[260];
-	Message[0] = 0x00;
-	Message[1] = 0x00;
-	Message[2] = 0x00;
-	Message[3] = 0x00;
-
-	Message[4] = 0x00;
-	Message[5] = Operations_Number;
-	Message[6] = DEVICE_ID;
-	test(Message);
-	for (int i = 0; i < 8; i++)
-	{
-			printf("%02X  ", Message[i]);
-	}
+	int Function_code = 0x10;
+	unsigned int Operations_Number = 5;
+	unsigned int Starting_address = 13;
+	string a = "1F 00 01 02 03 04 05 06 07 06";
 	
 	getchar();
 	return 0;