SX-WCS/WCS.Service/PLCAccessors/SiemensS7PLC.cs

using PlcSiemens.O;
using PlcSiemens.Protocol.Common;
using ServiceCenter;
using ServiceCenter.Virtual_PLC;
using WCS.Core;

namespace WCS.Service.PLCAccessors
{
    public class SiemensS7PLC : IPLCAccessor
    {
        private SimenssPlc plc;

        public SiemensS7PLC(string ip, int port, int rack, int slot)
        {
            plc = new SimenssPlc(ip, rack, slot);
            plc.Connect(); 
        }

        public byte[] ReadBytes(ushort db, ushort address, ushort length)
        { 
            if (!plc.Connected)
                plc.Connect();           
            var res = plc.ReadArea(AreaType.DB, db, address, length, DataType.Byte);
            if (res == null)
                throw new Exception("读取DB块数据失败");
            return res.Data;
        }

        public void WriteBytes(ushort db, ushort address, byte[] data)
        {
            if (!plc.Connected)
                plc.Connect();
            var res = plc.WriteArea(AreaType.DB, db, address, (ushort)data.Length, DataType.Byte, data);
            if (!res)
                throw new Exception("写入DB块数据失败");

        }
    }
}