Question

我早些时候尝试了相同的代码，这是完美的运行。后来我编程了使用“ LOGO！Soft Comfort 8.2”的“ Siemens LOGO 12/24 rce”，即使这样也可以完美工作。

但是当我使用Python重新编程时，它显示：发生异常：ConnectionResetError [WinError 10054]远程主机强行关闭了现有连接

代码：

#include <utility>      // std::pair, std::make_pair
#include <string>       // std::string
#include <iostream>     // std::cout
#include <map>
#include <unordered_map>
#include <set>
#include <algorithm>

using namespace std;
struct test
{
    int x;
    int *y;
    map<string, uintptr_t> *m;
};

int main ()
{
    int x=11,y=22;
    void *x1 = &x, *y1=&y;

    test *t1 = static_cast<test*>(calloc(1,sizeof(test)));
    t1->m = new map<string, uintptr_t>();
    t1->m->emplace(string("x"),reinterpret_cast<std::uintptr_t>(x1));
    t1->m->emplace(string("y"),reinterpret_cast<std::uintptr_t>(y1));

    cout<<"====== retrive the map in a calloc memory area==="<<endl;
    auto itr = t1->m->find(string("x"));
    if(itr != t1->m->end())
    {
        int *i = reinterpret_cast<int*>(itr->second);
        cout<<"found x="<<*i<<endl;
    }

  return 0;
}

错误：

from __future__ import print_function

import modbus_tk
import modbus_tk.defines as cst
from modbus_tk import modbus_tcp, hooks
import logging
import time

def main():
    """main"""
    logger = modbus_tk.utils.create_logger("console", level=logging.DEBUG)
try:

        def on_before_connect(args):
            master = args[0]
            logger.debug("on_before_connect {0} {1}".format(master._host, master._port))

        hooks.install_hook("modbus_tcp.TcpMaster.before_connect", on_before_connect)

        def on_after_recv(args):
            response = args[1]
            logger.debug("on_after_recv {0} bytes received".format(len(response)))

            print(type(master.execute(1, cst.READ_DISCRETE_INPUTS, 0, 64)))
        hooks.install_hook("modbus_tcp.TcpMaster.after_recv", on_after_recv)

        # Connect to the slave
        master = modbus_tcp.TcpMaster()
        master._host = "192.168.0.150"
        master._port = 502
        master.set_timeout(5.0)
        logger.info("connected")
        while(True):

            logger.info(master.execute(1, cst.READ_DISCRETE_INPUTS, 0, 64))
            time.sleep(0.2)


    except modbus_tk.modbus.ModbusError as exc:
        logger.error("%s- Code=%d", exc, exc.get_exception_code())

if __name__ == "__main__":
    main()

请帮助解决此问题。...提前感谢

Answer 1

首先，我建议您检查代码中的缩进级别，因为现在看起来有点混乱。

然后，请使用以下方法连接到您的设备：

master = modbus_tcp.TcpMaster("192.168.0.150")

我从来没有像您这样使用过它。 _host和_port是不是某种私有变量，因此您无法正确连接到设备？

PLC modbus [WinError 10054]：现有连接被远程主机强行关闭

1 个答案: