S7Net 读写西门子1500

1.首先在nuget中安装S7NetPlus 

 下面是读写方法

更多信息可以参考

Home · S7NetPlus/s7netplus Wiki · GitHub

下面的代码测试了Bool,Int,DInt,LReal四中类型。操作PLC感觉比较麻烦。测了好几天才成功。

环境 win10纯净版+博途V17+PLC1200 

using CompoundingDeviceWeb.Helper;
using S7.Net;
using System.Diagnostics;

namespace CompoundingDeviceWeb.Communication
{
    public class S7Net
    {
        public static S7Net? Instance;
        public static bool IsConnected { get; set; }
        public static bool IsAvailable { get; set; }
        private Plc plc;

        /*
         bool DBX
         Dint DBD
         Real DBW

         DBD是双字、DBW是字、DBB是字节

        Siemens C#
BOOL bool
BYTE byte
WORD short / ushort
DWORD int / uint
INT short / ushort
DINT int / uint
REAL float
LREAL double

         */
        public static S7Net GetInstance()
        {
            if (Instance == null)
            {
                Instance = new S7Net();
            }
            return Instance;
        }

        public async void Connect()
        {
            string PLCIP = AppSettingsHelper.Configuration["PLC:IP"];
            plc = new Plc(CpuType.S71500, PLCIP, 0, 1);

            try
            {
                plc.Open();

                Debug.WriteLine($"PLC Connect {plc.IsConnected} ");
                IsConnected = plc.IsConnected;
            }
            catch (Exception ex)
            {
                LogHelper.Error(ex.Message);
                IsConnected = false;
            }
            finally
            {
                //IsAvailable =
                Debug.WriteLine("PLC Connect");
                SendPLCConnectStatus();
            }
        }


        public string PLCRead(string type, int DB, int startByteAdr, byte bitAdr = 0)
        {
            if (plc == null || !IsConnected)
            {
                Connect();
            }

            string Result = "";
            switch (type.ToUpper())
            {
                case "BOOL":
                    Result = ((bool)plc.Read(DataType.DataBlock, DB, startByteAdr, VarType.Bit, 1,bitAdr)).ToString();
                    break;
                case "BYTE":
                    Result = ((byte)plc.Read(DataType.DataBlock, DB, startByteAdr, VarType.Byte, 1)).ToString();
                    break;
                case "INT":
                    Result = (plc.Read(DataType.DataBlock, DB, startByteAdr, VarType.Int, 1)).ToString();
                    break;
                case "DINT":
                    Result = ((Int32)plc.Read(DataType.DataBlock, DB, startByteAdr, VarType.DInt, 1)).ToString();
                    break;
                case "LREAL":
                    Result = ((double)plc.Read(DataType.DataBlock, DB, startByteAdr, VarType.LReal, 1)).ToString();
                    break;
            }

            SendPLCConnectStatus();
            return Result;
        }

        public string PLCWrite(string type, int DB, int startByteAdr,string value, byte bitAdr = 0)
        {
            if (plc == null || !IsConnected)
            {
                Connect();
            }

            string Result = "";
            switch (type.ToUpper())
            {
                case "BOOL":
                     plc.Write(DataType.DataBlock, DB, startByteAdr, bool.Parse(value),bitAdr);
                    break;
                case "BYTE":
                    plc.Write(DataType.DataBlock, DB, startByteAdr, value, bitAdr); 
                    break;
                case "INT":                   
                    plc.Write(DataType.DataBlock, DB, startByteAdr, (ushort)(int.Parse(value)));
                    break;
                case "DINT":
                    plc.Write(DataType.DataBlock, DB, startByteAdr, Int32.Parse(value));
                    break;
                case "LREAL":

                    double MyData = Convert.ToDouble(value);
                    
                    plc.Write(DataType.DataBlock, DB, startByteAdr, MyData);
                    break;
            }

            return Result;
        }

    }
}

另外博途要设置 允许远程操作否则S7Net会报错！

 报错的信息也有说要设置下面。我这里是设置上面就OK了