GitHub - larry-ellison/siemens_plc_s7_net

程序整体介绍

项目名称：siemens_plc_s7_net
开发语言：C语言
支持操作系统：windows/linux
测试设备：S1200

目前实现功能，实现西门子PLC通讯类，采用S7协议实现，需要在PLC侧先的以太网模块先进行配置。

头文件

#include "siemens_s7.h" 	//协议提供方法接口
#include "typedef.h" 		//部分类型宏定义

西门子PLC地址说明

连接属性

port 端口号，通常为102
plc_type plc型号，S200、S200Smart、S300、S400、S1200、S1500

PLC地址分类

类型的代号值（软元件代码，用于区分软元件类型，如：D，R）

序号	描述	地址类型
1	中间继电器	M
2	输入继电器	I
3	输出继电器Q	Q
4	DB块寄存器DB	DB
5	V寄存器	V
6	定时器的值	T
7	计数器的值	C
8	智能输入寄存器	AI
9	智能输出寄存器	AQ

实现方法

1.连接PLC设备

bool s7_connect(char* ip_addr, int port, siemens_plc_types_e plc, int* fd);
bool s7_disconnect(int fd);

byte get_plc_slot();
void set_plc_slot(byte slot);

byte get_plc_rack();
void set_plc_rack(byte rack);

byte get_plc_connection_type();
void set_plc_connection_type(byte rack);

int get_plc_local_TSAP();
void set_plc_local_TSAP(int tasp);

int get_plc_dest_TSAP();
void set_plc_dest_TSAP(int tasp);

int get_plc_PDU_length();

2.读取数据

s7_error_code_e s7_read_bool(int fd, const char* address, bool* val);
s7_error_code_e s7_read_short(int fd, const char* address, short* val);
s7_error_code_e s7_read_ushort(int fd, const char* address, ushort* val);
s7_error_code_e s7_read_int32(int fd, const char* address, int32* val);
s7_error_code_e s7_read_uint32(int fd, const char* address, uint32* val);
s7_error_code_e s7_read_int64(int fd, const char* address, int64* val);
s7_error_code_e s7_read_uint64(int fd, const char* address, uint64* val);
s7_error_code_e s7_read_float(int fd, const char* address, float* val);
s7_error_code_e s7_read_double(int fd, const char* address, double* val);
s7_error_code_e s7_read_string(int fd, const char* address, int length, char** val); //need free val

3.写入数据

s7_error_code_e s7_write_bool(int fd, const char* address, bool val);
s7_error_code_e s7_write_short(int fd, const char* address, short val);
s7_error_code_e s7_write_ushort(int fd, const char* address, ushort val);
s7_error_code_e s7_write_int32(int fd, const char* address, int32 val);
s7_error_code_e s7_write_uint32(int fd, const char* address, uint32 val);
s7_error_code_e s7_write_int64(int fd, const char* address, int64 val);
s7_error_code_e s7_write_uint64(int fd, const char* address, uint64 val);
s7_error_code_e s7_write_float(int fd, const char* address, float val);
s7_error_code_e s7_write_double(int fd, const char* address, double val);
s7_error_code_e s7_write_string(int fd, const char* address, int length, const char* val);

使用样例

完整样例参见代码中main.c文件，如下提供主要代码和使用方法：

*读取地址，格式为"M100","DB100"

#ifdef _WIN32
#include <WinSock2.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#pragma warning( disable : 4996)

#define GET_RESULT(ret){ if(!ret) faild_count++; }

#include "siemens_s7.h"

int main(int argc, char** argv)
{
#ifdef _WIN32
	WSADATA wsa;
	if (WSAStartup(MAKEWORD(2, 2), &wsa) != 0)
	{
		return -1;
	}
#endif

	char* plc_ip = "192.168.123.170";
	int plc_port = 102;
	if (argc > 1)
	{
		plc_ip = argv[1];
		plc_port = atoi(argv[2]);
	}

	int fd = -1;
	bool ret = s7_connect(plc_ip, plc_port, S1200, &fd);
	if (ret && fd > 0)
	{
		s7_error_code_e ret = S7_ERROR_CODE_FAILED;

		char* type = s7_read_plc_type(fd);
		printf("plc type: %s\n", type);
		free(type);

		const int TEST_COUNT = 5000;
		const int TEST_SLEEP_TIME = 1000;
		int faild_count = 0;
		char address[50] = { 0 };
		int i = 0;

		for (i = 0; i < TEST_COUNT; i++)
		{
			printf("==============Test count: %d==============\n", i + 1);
			bool all_success = false;
			//////////////////////////////////////////////////////////////////////////
			bool val = true;
			strcpy(address, "MX100");
			ret = s7_write_bool(fd, address, val);
			printf("Write\t %s \tbool:\t %d, \tret: %d\n", address, val, ret);
			GET_RESULT(ret);

			val = false;
			ret = s7_read_bool(fd, address, &val);
			printf("Read\t %s \tbool:\t %d\n", address, val);
			GET_RESULT(ret);

			//////////////////////////////////////////////////////////////////////////
			short w_s_val = 23;
			strcpy(address, "MW100");
			ret = s7_write_short(fd, address, w_s_val);
			printf("Write\t %s \tshort:\t %d, \tret: %d\n", address, w_s_val, ret);
			GET_RESULT(ret);

			short s_val = 0;
			ret = s7_read_short(fd, address, &s_val);
			printf("Read\t %s \tshort:\t %d\n", address, s_val);
			GET_RESULT(ret);

			//////////////////////////////////////////////////////////////////////////
			ushort w_us_val = 255;
			strcpy(address, "MW100");
			ret = s7_write_ushort(fd, address, w_us_val);
			printf("Write\t %s \tushort:\t %d, \tret: %d\n", address, w_us_val, ret);
			GET_RESULT(ret);

			ushort us_val = 0;
			ret = s7_read_ushort(fd, address, &us_val);
			printf("Read\t %s \tushort:\t %d\n", address, us_val);
			GET_RESULT(ret);

			//////////////////////////////////////////////////////////////////////////
			int32 w_i_val = 12345;
			strcpy(address, "DB1.70");
			ret = s7_write_int32(fd, address, w_i_val);
			printf("Write\t %s \tint32:\t %d, \tret: %d\n", address, w_i_val, ret);
			GET_RESULT(ret);

			int i_val = 0;
			ret = s7_read_int32(fd, address, &i_val);
			printf("Read\t %s \tint32:\t %d\n", address, i_val);
			GET_RESULT(ret);

			//////////////////////////////////////////////////////////////////////////
			uint32 w_ui_val = 22345;
			ret = s7_write_uint32(fd, address, w_ui_val);
			printf("Write\t %s \tuint32:\t %d, \tret: %d\n", address, w_ui_val, ret);
			GET_RESULT(ret);

			uint32 ui_val = 0;
			ret = s7_read_uint32(fd, address, &ui_val);
			printf("Read\t %s \tuint32:\t %d\n", address, ui_val);
			GET_RESULT(ret);

			//////////////////////////////////////////////////////////////////////////
			int64 w_i64_val = 333334554;
			strcpy(address, "DB1.DBW70");
			ret = s7_write_int64(fd, address, w_i64_val);
			printf("Write\t %s \tuint64:\t %lld, \tret: %d\n", address, w_i64_val, ret);
			GET_RESULT(ret);

			int64 i64_val = 0;
			ret = s7_read_int64(fd, address, &i64_val);
			printf("Read\t %s \tint64:\t %lld\n", address, i64_val);
			GET_RESULT(ret);

			//////////////////////////////////////////////////////////////////////////
			uint64 w_ui64_val = 4333334554;
			strcpy(address, "DB1.DBW70");
			ret = s7_write_uint64(fd, address, w_ui64_val);
			printf("Write\t %s \tuint64:\t %lld, \tret: %d\n", address, w_ui64_val, ret);
			GET_RESULT(ret);

			int64 ui64_val = 0;
			ret = s7_read_uint64(fd, address, &ui64_val);
			printf("Read\t %s \tuint64:\t %lld\n", address, ui64_val);
			GET_RESULT(ret);

			//////////////////////////////////////////////////////////////////////////
			float w_f_val = 32.454f;
			strcpy(address, "DB1.DBW70");
			ret = s7_write_float(fd, address, w_f_val);
			printf("Write\t %s \tfloat:\t %f, \tret: %d\n", address, w_f_val, ret);
			GET_RESULT(ret);

			float f_val = 0;
			ret = s7_read_float(fd, address, &f_val);
			printf("Read\t %s \tfloat:\t %f\n", address, f_val);
			GET_RESULT(ret);

			//////////////////////////////////////////////////////////////////////////
			double w_d_val = 12345.6789;
			ret = s7_write_double(fd, address, w_d_val);
			printf("Write\t %s \tdouble:\t %lf, \tret: %d\n", address, w_d_val, ret);
			GET_RESULT(ret);

			double d_val = 0;
			ret = s7_read_double(fd, address, &d_val);
			printf("Read\t %s \tdouble:\t %lf\n", address, d_val);
			GET_RESULT(ret);

			//////////////////////////////////////////////////////////////////////////
			const char sz_write[] = "wqliceman@gmail.com";
			int length = sizeof(sz_write) / sizeof(sz_write[0]);
			ret = s7_write_string(fd, address, length, sz_write);
			printf("Write\t %s \tstring:\t %s, \tret: %d\n", address, sz_write, ret);
			GET_RESULT(ret);

			char* str_val = NULL;
			ret = s7_read_string(fd, address, length, &str_val);
			printf("Read\t %s \tstring:\t %s\n", address, str_val);
			free(str_val);
			GET_RESULT(ret);

#ifdef _WIN32
			Sleep(TEST_SLEEP_TIME);
#else
			usleep(TEST_SLEEP_TIME* 1000);
#endif
		}

		printf("All Failed count: %d\n", faild_count);

		//mc_remote_run(fd);
		//mc_remote_stop(fd);
		//mc_remote_reset(fd);
		s7_disconnect(fd);

		system("pause");
	}

#ifdef _WIN32
	WSACleanup();
#endif
}

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
siemens_plc_s7_net		siemens_plc_s7_net
.gitattributes		.gitattributes
.gitignore		.gitignore
README.md		README.md
common.mk		common.mk
config.mk		config.mk
makefile		makefile

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程序整体介绍

头文件

西门子PLC地址说明

连接属性

PLC地址分类

实现方法

1.连接PLC设备

2.读取数据

3.写入数据

使用样例

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程序整体介绍

头文件

西门子PLC地址说明

连接属性

PLC地址分类

实现方法

1.连接PLC设备

2.读取数据

3.写入数据

使用样例

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