cash code 是一套纸币识别器，由于项目需要，决定使用C＃开发，应用。网上资源奇缺，清如许工作室首发　

首先从　http://www.cnblogs.com/tuyile006/archive/2006/09/25/514327.aspx　下载　C# com 口通信代码

波特率：9600

下面是返回代码对应含义

一块
02 03 07 81 00 54 2A

五块
02 03 07 81 02 46 09

十块
02 03 07 81 03 CF 18     

二十块
02 03 07 81 04 70 6C

五十块
02 03 07 81 05 F9 7D

一百块
02 03 07 81 06 62 4F

复位 02 03 06 00 C2 82
重置    02 03 06 30 41 B3
收钱    02 03 06 33 DA 81
纸币类型    02 03 06 41 4F D1
识别机器    02 03 06 37 FE C7

以下是全部源码：

        //收钱事件
        private void poll_Click(object sender, EventArgs e)
        {
            t = new Thread(new ThreadStart(Poll));
            t.IsBackground = true;
            t.Start();
        }

        //收钱方法
        public void Poll()
        {
            //重启
            t_send.Text = "02 03 06 30 41 B3";
            byte[] temp1 = mysendb();
            SendPackage(temp1);

            /////
            t_send.Text = "02 03 06 37 FE C7";
            temp1 = mysendb();
            mycom1.Write(temp1);
            msg.AppendText("\r\n发送数据包：" + dis_package(temp1));


            t_send.Text = "02 03 06 41 4F D1";
            temp1 = mysendb();
            mycom1.Write(temp1);
            msg.AppendText("\r\n发送数据包：" + dis_package(temp1));
            /////


            string temp = "";
            while ("02 03 06 19 82 0F "!=temp)
            {
                //申请接收
                t_send.Text = "02 03 06 33 DA 81";
                temp1 = mysendb();
                mycom1.Write(temp1);
                msg.AppendText("\r\n发送数据包：" + dis_package(temp1));

                Thread.Sleep(50);
                temp = dis_package(mycom1.Read(50));
                msg.AppendText("\r\n接收到数据包：" + temp);
            }


           
            //收钱主要
            t_send.Text = "02 03 0C 34 FF FF FF 00 00 00 B5 C1";
            temp1 = mysendb();
            SendPackage(temp1);
            //
            while (true)
            {
                Thread.Sleep(80);
                if ("02 03 06 14 67 D4 " != temp && "02 03 06 15 EE C5 " != temp && "02 03 06 17 FC E6 " != temp)
                {
                    //计算钱数
                    switch (temp)
                    {
                        case "02 03 07 81 00 54 2A ": money += 1; break; //一块
                        case "02 03 07 81 02 46 09 ": money += 5; break; //五块
                        case "02 03 07 81 03 CF 18 ": money += 10; break; //十块
                        case "02 03 07 81 04 70 6C ": money += 20; break; //二十块
                        case "02 03 07 81 05 F9 7D ": money += 50; break; //五十块
                        case "02 03 07 81 06 62 4F ": money += 100; break; //一百块
                    }
                    button14.Text = "金额：" + money + "元";
                }
                if("" == temp)
                {
                    //申请接收
                    t_send.Text = "02 03 06 33 DA 81";
                    temp1 = mysendb();
                    mycom1.Write(temp1);
                    msg.AppendText("\r\n发送数据包：" + dis_package(temp1));

                    Thread.Sleep(50);
                    temp = dis_package(mycom1.Read(50));
                    msg.AppendText("\r\n接收到数据包：" + temp);
                }
                else if ("02 03 06 14 67 D4 " == temp)
                {
                    if ("02 03 06 19 82 0F " ==temp)
                    {
                        //收钱主要
                        t_send.Text = "02 03 0C 34 FF FF FF 00 00 00 B5 C1";
                        temp1 = mysendb();
                        SendPackage(temp1);
                    }
                    //申请接收
                    t_send.Text = "02 03 06 33 DA 81";
                    temp1 = mysendb();
                    mycom1.Write(temp1);
                    msg.AppendText("\r\n发送数据包：" + dis_package(temp1));

                    Thread.Sleep(50);
                    temp = dis_package(mycom1.Read(50));
                    msg.AppendText("\r\n接收到数据包：" + temp);
                                     
                }
                else
                {
                //申请接收2
                t_send.Text = "02 03 06 00 C2 82";
                temp1 = mysendb();
                mycom1.Write(temp1);
                msg.AppendText("\r\n发送数据包：" + dis_package(temp1));

                Thread.Sleep(50);
                temp = dis_package(mycom1.Read(50));
                msg.AppendText("\r\n接收到数据包：" + temp);
                }
            }
            //
        }

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