diff --git a/Modbus_communication/Modbus_RTU_Salve/Modbus_RTU_Salve.vcxproj b/Modbus_communication/Modbus_RTU_Salve/Modbus_RTU_Salve.vcxproj
new file mode 100644
index 0000000..06c5c74
--- /dev/null
+++ b/Modbus_communication/Modbus_RTU_Salve/Modbus_RTU_Salve.vcxproj
@@ -0,0 +1,77 @@
+
+
+
+
+ Debug
+ Win32
+
+
+ Release
+ Win32
+
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+ {8C67F4EB-BDBE-4605-9291-5A535AC44AE2}
+ Modbus_RTU_Salve
+
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+ Application
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\ No newline at end of file
diff --git a/Modbus_communication/Modbus_RTU_Salve/Modbus_RTU_Salve.vcxproj.filters b/Modbus_communication/Modbus_RTU_Salve/Modbus_RTU_Salve.vcxproj.filters
new file mode 100644
index 0000000..db7e967
--- /dev/null
+++ b/Modbus_communication/Modbus_RTU_Salve/Modbus_RTU_Salve.vcxproj.filters
@@ -0,0 +1,33 @@
+
+
+
+
+ {4FC737F1-C7A5-4376-A066-2A32D752A2FF}
+ cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx
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+ {93995380-89BD-4b04-88EB-625FBE52EBFB}
+ h;hh;hpp;hxx;hm;inl;inc;xsd
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\ No newline at end of file
diff --git a/Modbus_communication/Modbus_RTU_Salve/RTU_common.cpp b/Modbus_communication/Modbus_RTU_Salve/RTU_common.cpp
new file mode 100644
index 0000000..2dd4875
--- /dev/null
+++ b/Modbus_communication/Modbus_RTU_Salve/RTU_common.cpp
@@ -0,0 +1,176 @@
+#include "RTU_common.h"
+
+char read_buf[MAX_NUMBER];
+
+/*******************************************************************************************
+ * 功能 ： 打开串口
+ * port : 串口号, 如("COM1")
+ * baud_rate: 波特率
+ * date_bits: 数据位（有效范围4~8）
+ * stop_bit : 停止位
+ * parity : 奇偶校验。默认为无校验。NOPARITY 0； ODDPARITY 1；EVENPARITY 2
+
+ * dcb.StopBits= 0,1,2对应的是1bit,1.5bits,2bits.
+ * dcb.ByteSize=6,7,8时 dcb.StopBits不能为1
+ * dcb.ByteSize=5时 dcb.StopBits不能为2
+ ********************************************************************************************/
+HANDLE InitCOM(LPCTSTR Port, int baud_rate, BYTE date_bits, BYTE stop_bit, BYTE parity)
+{
+ HANDLE hCom = CreateFile(Port, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);//同步方式打开串口
+ if (INVALID_HANDLE_VALUE == hCom)
+ {
+ return INVALID_HANDLE_VALUE;
+ }
+ SetupComm(hCom, 4096, 4096);//设置缓存
+ DCB dcb;
+ if (!GetCommState(hCom, &dcb))
+ {
+ cout << "获取串口配置失败" << endl;
+ }
+ dcb.BaudRate = baud_rate; //波特率
+ dcb.fBinary = TRUE; //二进制模式。必须为TRUE
+ dcb.ByteSize = date_bits; //数据位。范围4-8
+ if (stop_bit == 0)
+ dcb.StopBits = ONESTOPBIT; //停止位
+ if (stop_bit == 1)
+ dcb.StopBits = ONE5STOPBITS; //停止位
+ if (stop_bit == 2)
+ dcb.StopBits = TWOSTOPBITS; //停止位
+
+ if (parity == NOPARITY)
+ {
+ dcb.fParity = FALSE; //奇偶校验关闭
+ dcb.Parity = parity; //校验模式
+ }
+ else
+ {
+ dcb.fParity = TRUE; //奇偶校验开启
+ dcb.Parity = parity; //校验模式
+ }
+ cout << SetCommState(hCom, &dcb) << endl;
+ PurgeComm(hCom, PURGE_RXABORT | PURGE_TXCLEAR | PURGE_RXCLEAR | PURGE_TXABORT);//清除缓存
+ //设置串口读写时间
+ COMMTIMEOUTS CommTimeOuts;
+ GetCommTimeouts(hCom, &CommTimeOuts);
+ CommTimeOuts.ReadIntervalTimeout = 5;
+ CommTimeOuts.ReadTotalTimeoutMultiplier = 1;
+ CommTimeOuts.ReadTotalTimeoutConstant = 0;
+ CommTimeOuts.WriteTotalTimeoutMultiplier = 10;
+ CommTimeOuts.WriteTotalTimeoutConstant = 1000;
+ if (!SetCommTimeouts(hCom, &CommTimeOuts)) {
+ return INVALID_HANDLE_VALUE;
+ }
+ //创建线程，读取数据
+ //HANDLE hReadCommThread = (HANDLE)CreateThread(NULL, 0, CommProc, &hCom, 0, NULL);
+ return hCom;
+}
+
+/*********************************************************************************************
+* 功能 ： 发送响应数据
+* 描述 ： 向串口写入数据
+* 返回值 ： true 发送成功 false 发送失败
+* m_hComm ： 串口句柄
+* data ： 要写入的数据
+* len ： 写入数据的长度
+********************************************************************************************/
+bool SendData(HANDLE m_hComm, char* data, int len)
+{
+ if (m_hComm == INVALID_HANDLE_VALUE)
+ return FALSE;
+
+ //清空串口
+ PurgeComm(m_hComm, PURGE_RXCLEAR | PURGE_TXCLEAR);
+ //写串口
+ DWORD dwWrite = 0;
+ DWORD dwRet = WriteFile(m_hComm, data, len, &dwWrite, NULL);
+ //清空串口
+ PurgeComm(m_hComm, PURGE_RXCLEAR | PURGE_TXCLEAR);
+ if (!dwRet)
+ return FALSE;
+ return TRUE;
+}
+
+/*********************************************************************************************
+* 功能 ： 获取串口读取缓存区中数据的字节数
+* 描述 ： 向串口写入数据
+* 返回值 ： 缓存区中数据的字节数
+* m_hComm ： 串口句柄
+********************************************************************************************/
+unsigned int GetBytesInCOM(HANDLE m_hComm)
+{
+ DWORD dwError = 0; /** 错误码 */
+ COMSTAT comstat; /** COMSTAT结构体,记录通信设备的状态信息 */
+ memset(&comstat, 0, sizeof(COMSTAT));
+
+ unsigned int BytesInQue = 0;
+ /** 在调用ReadFile和WriteFile之前,通过本函数清除以前遗留的错误标志 */
+ if (ClearCommError(m_hComm, &dwError, &comstat))
+ {
+ BytesInQue = comstat.cbInQue; /** 获取在输入缓冲区中的字节数 */
+ }
+ return BytesInQue;
+}
+
+void MSleep(long lTime)
+{
+ LARGE_INTEGER litmp;
+ LONGLONG QPart1, QPart2;
+ double dfMinus, dfFreq, dfTim, dfSpec;
+ QueryPerformanceFrequency(&litmp);
+ dfFreq = (double)litmp.QuadPart;
+ QueryPerformanceCounter(&litmp);
+ QPart1 = litmp.QuadPart;
+ dfSpec = 0.000001*lTime;
+
+ do
+ {
+ QueryPerformanceCounter(&litmp);
+ QPart2 = litmp.QuadPart;
+ dfMinus = (double)(QPart2 - QPart1);
+ dfTim = dfMinus / dfFreq;
+ } while (dfTim> COMM;
+ HANDLE H_Com = InitCOM((LPCTSTR)COMM.c_str(), 9600, 8, 0, 1);
+ if (H_Com == INVALID_HANDLE_VALUE)
+ {
+ cout << "初始化串口失败" << endl;
+ getchar();
+ return 0;
+ }
+
+ char write_buf[MAX_NUMBER];
+ memset(write_buf, 0, MAX_NUMBER);
+ DWORD dwRead;
+ while (true)
+ {
+ //RTU主站，生成并发送请求，计时，读取响应报文,先发送后接收
+ //生成请求报文
+ //发送请求报文
+
+ PurgeComm(H_Com, PURGE_RXABORT | PURGE_TXCLEAR | PURGE_RXCLEAR | PURGE_TXABORT);//清除缓存
+ while (1)
+ {
+ if (true == SendData(H_Com, "ok", 2))
+ {
+ cout << "发送请求报文成功" << endl;
+ break;
+ }
+ }
+ BOOL bReadOK = ReadFile(H_Com, read_buf, 256, &dwRead, NULL);
+ if (bReadOK && (dwRead > 0))
+ {
+ read_buf[dwRead] = '\0';
+ printf("收到响应：%s \r\n", read_buf);
+ }
+ else
+ cout << "loss" << endl;
+ }
+ CloseHandle(H_Com);
+ getchar();
+ return 0;
+}
\ No newline at end of file
diff --git a/Modbus_communication/Modbus_RTU_Salve/RTU_common.h b/Modbus_communication/Modbus_RTU_Salve/RTU_common.h
new file mode 100644
index 0000000..114ffed
--- /dev/null
+++ b/Modbus_communication/Modbus_RTU_Salve/RTU_common.h
@@ -0,0 +1,12 @@
+#ifndef __RTU_COMMON_H
+#define __RTU_COMMON_H
+
+#include
+#include
+#include
+using namespace std;
+
+#define MAX_NUMBER 300
+
+int test();
+#endif
\ No newline at end of file
diff --git a/Modbus_communication/Modbus_RTU_Salve/main.cpp b/Modbus_communication/Modbus_RTU_Salve/main.cpp
new file mode 100644
index 0000000..294c7c4
--- /dev/null
+++ b/Modbus_communication/Modbus_RTU_Salve/main.cpp
@@ -0,0 +1,8 @@
+#include "main.h"
+
+int main()
+{
+ test();
+ getchar();
+ return 0;
+}
\ No newline at end of file
diff --git a/Modbus_communication/Modbus_RTU_Salve/main.h b/Modbus_communication/Modbus_RTU_Salve/main.h
new file mode 100644
index 0000000..9524beb
--- /dev/null
+++ b/Modbus_communication/Modbus_RTU_Salve/main.h
@@ -0,0 +1,6 @@
+#ifndef __MAIN_H
+#define __MAIN_H
+
+#include "RTU_common.h"
+
+#endif
\ No newline at end of file
diff --git a/Modbus_communication/Modbus_communication.sln b/Modbus_communication/Modbus_communication.sln
index 437b87b..b8f423a 100644
--- a/Modbus_communication/Modbus_communication.sln
+++ b/Modbus_communication/Modbus_communication.sln
@@ -3,7 +3,19 @@ Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2013
VisualStudioVersion = 12.0.30501.0
MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Modbus_RTU_Salve", "Modbus_RTU_Salve\Modbus_RTU_Salve.vcxproj", "{8C67F4EB-BDBE-4605-9291-5A535AC44AE2}"
+EndProject
Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Win32 = Debug|Win32
+ Release|Win32 = Release|Win32
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {8C67F4EB-BDBE-4605-9291-5A535AC44AE2}.Debug|Win32.ActiveCfg = Debug|Win32
+ {8C67F4EB-BDBE-4605-9291-5A535AC44AE2}.Debug|Win32.Build.0 = Debug|Win32
+ {8C67F4EB-BDBE-4605-9291-5A535AC44AE2}.Release|Win32.ActiveCfg = Release|Win32
+ {8C67F4EB-BDBE-4605-9291-5A535AC44AE2}.Release|Win32.Build.0 = Release|Win32
+ EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection