xicheji/Form1.cs

using S7.Net;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace xicheji
{
    public partial class Form1 : Form
    {
        private Plc plc;

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                plc = new Plc(CpuType.S7200, "127.0.0.1", 1502, 0, 1);
                plc.Open();
                richTextBox1.AppendText("连接成功！\n\n");
                richTextBox1.ScrollToCaret();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message + ex.StackTrace);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (plc == null || !plc.IsConnected) return;
            //plc中类型与c#类型 bool => Bit
            //Byte => byte
            //word => ushort
            //DWord => uint
            //Int => short
            //DInt => int
            //Real => float
            //LReal => double
            //String => string
            //DateTimeLong=>datetime
            //s7wstring=>string

            try
            {
                var db = 1;
                var start = plc.Read(DataType.DataBlock, db, 0, VarType.Byte, 1);
                Log("start:", start);
                var length = plc.Read(DataType.DataBlock, db, 1, VarType.Byte, 1);
                Log("length:", length);
                var mac = plc.Read(DataType.DataBlock, db, 2, VarType.Byte, 6);
                Log("mac:", string.Join(":", (mac as byte[]).ToList().ConvertAll(a => "0x" + a.ToString("X2"))));
                var val = plc.Read(DataType.DataBlock, db, 10, VarType.Bit, 1, 1);
                Log("DB1.DBX10.1的值为:", val);
                val = plc.Read(DataType.DataBlock, db, 10, VarType.Bit, 1, 2);
                Log("DB1.DBX10.2的值为:", val);
                val = plc.Read(DataType.DataBlock, db, 20, VarType.DWord, 1);
                Log("读取DB1.DBX20 DWORD的洗车次数值为:", val);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message + ex.StackTrace);
            }
        }

        private void Log(params object[] msgs)
        {
            richTextBox1.AppendText(string.Join(" ", msgs));
            richTextBox1.AppendText("\n\n");
            richTextBox1.ScrollToCaret();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            plc?.Close();
        }
    }
}