87 lines
1.9 KiB
C#
87 lines
1.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace MECF.Framework.RT.Core.IoProviders.Siemens.IMessage
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{
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/// <summary>
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/// 西门子S7协议的消息解析规则
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/// </summary>
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public class S7Message : INetMessage
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{
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/// <summary>
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/// 西门子头字节的长度
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/// </summary>
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public int ProtocolHeadBytesLength
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{
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get { return 4; }
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}
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/// <summary>
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/// 头子节的数据
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/// </summary>
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public byte[] HeadBytes { get; set; }
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/// <summary>
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/// 内容字节的数据
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/// </summary>
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public byte[] ContentBytes { get; set; }
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/// <summary>
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/// 检查头子节是否合法的判断
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/// </summary>
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/// <param name="token">令牌</param>
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/// <returns>是否合法的</returns>
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public bool CheckHeadBytesLegal(byte[] token)
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{
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if (HeadBytes == null) return false;
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if (HeadBytes[0] == 0x03 && HeadBytes[1] == 0x00)
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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/// <summary>
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/// 获取剩余的内容长度
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/// </summary>
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/// <returns>数据内容长度</returns>
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public int GetContentLengthByHeadBytes()
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{
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if (HeadBytes?.Length >= 4)
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{
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return HeadBytes[2] * 256 + HeadBytes[3] - 4;
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}
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else
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{
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return 0;
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}
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}
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/// <summary>
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/// 获取消息号，此处无效
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/// </summary>
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/// <returns>消息标识</returns>
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public int GetHeadBytesIdentity()
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{
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return 0;
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}
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/// <summary>
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/// 发送的字节信息
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/// </summary>
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public byte[] SendBytes { get; set; }
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}
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}
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