163 lines
4.5 KiB
C#
163 lines
4.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Threading;
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using Microsoft.VisualBasic;
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using System.IO.Ports;
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using CommonClassLib;
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namespace SimensSerialPort
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{
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/// <summary>
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/// Create by Richard.liu 2008
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/// Simens PLC通讯类,RS232的自由口协议
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/// </summary>
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public class CSimensSerialPort
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{
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SerialPort com;
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bool _ifInit;
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short _portNo;
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string _settings;
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/// <summary>
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/// 初始化PLC自由口协议通讯类
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/// </summary>
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/// <param name="Portno">计算机串口（COM口）号：1，2，3，4，5，6，7，8</param>
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/// <param name="Settings">通讯设置：9600，None，8，One；分隔符使用全角“，”</param>
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public CSimensSerialPort(short Portno, string Settings)
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{
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_portNo = Portno;
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_settings = Settings;
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com = new SerialPort();
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}
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string _ComError;
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public string ComError
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{
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get { return _ComError; }
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set { _ComError = value; }
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}
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public bool InitCom()
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{
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try
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{
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if (com.IsOpen == true)
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{
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com.Close();
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}
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com.PortName ="COM"+ _portNo.ToString();
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char[] cc = new char[1] { '，'};
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string[] split = _settings.Split(cc);
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com.BaudRate =Convert.ToInt32( split[0]);
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com.Parity = Parity.None;//(Parity)Convert.ChangeType(split[1], typeof(Parity));
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com.DataBits = Convert.ToInt32(split[2]);
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com.StopBits = StopBits.One;// (StopBits)Convert.ChangeType(split[3], typeof(StopBits));
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com.Open();
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_ifInit = true;
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return true;
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}
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catch (Exception ex)
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{
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_ComError = "通讯端口:" + _portNo + "初始化失败!" + ex.Message;
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return false;
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}
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}
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public byte[] ReadCom(short InBufCount)
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{
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if (_ifInit == false)
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InitCom();
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int i = 0;
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try
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{
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do
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{
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i++;
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if (i > 5)
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break;
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Thread.Sleep(300);
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} while (com.BytesToRead < InBufCount);
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if (com.BytesToRead <= 0)
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{
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_ComError = "在串口输入缓冲区内没有要接收到的数据！";
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return null;
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}
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byte[] inbyte = new byte[InBufCount];
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com.Read(inbyte, 0, InBufCount);
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//CCarryConvert.WriteDarkCasket(this.ToString(), "Read", com.PortName, inbyte);
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return inbyte;
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}
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catch (Exception ex)
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{
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_ComError = ex.Message;
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return null;
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}
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}
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public string ReadCom()
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{
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if (_ifInit == false)
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InitCom();
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try
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{
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string gets = com.ReadExisting();
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//CCarryConvert.WriteDarkCasket(this.ToString(), "ReadExisting", com.PortName, gets);
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return gets;
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}
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catch (Exception ex)
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{
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_ComError = ex.Message;
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return null;
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}
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}
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public bool WriteCom(string wData)
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{
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if (_ifInit == false)
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InitCom();
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try
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{
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com.Write( wData);
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//CCarryConvert.WriteDarkCasket(this.ToString(), "Write", com.PortName, wData);
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return true;
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}
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catch (Exception ex)
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{
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_ComError = "写串口缓冲区失败！" + ex.Message;
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return false;
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}
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}
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public bool WriteCom(byte[] wData)
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{
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if (_ifInit == false)
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InitCom();
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try
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{
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//com.WriteBufferSize = 0;
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com.Write(wData, 0, wData.GetUpperBound(0)+1);
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//CCarryConvert.WriteDarkCasket(this.ToString(), "Write", com.PortName, wData);
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return true;
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}
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catch (Exception ex)
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{
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_ComError = "写串口缓冲区失败！" + ex.Message;
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return false;
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}
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}
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public void CloseCom()
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{
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if (com.IsOpen==true) com.Close();
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}
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}
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}
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