using LB_SmartVisionCommon;
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using S7.Net;
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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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using System.Text.RegularExpressions;
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using System.Threading;
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namespace LB_VisionProcesses.Communicators.SiemensS7
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{
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public class SiemensLBS7 : BaseCommunicator
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{
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private Plc plc;
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// 默认变量地址
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public string variable = "DB100.DBX0.1";
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// 数据类型
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private string dataType = "Bool";
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// 缓存连接参数
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private string ip = "127.0.0.1";
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private short rack = 0;
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private short slot = 1;
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private CpuType cpuType = CpuType.S71500;
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public SiemensLBS7(string name = "西门子S7") : base(name)
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{
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CommunicatorName = name;
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CommunicatorBrand = CommunicatorBrand.SiemensS7;
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// 初始化默认参数
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if (!CommunicatorConnections.Contains("地址")) CommunicatorConnections.Add("地址", "192.168.0.1");
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if (!CommunicatorConnections.Contains("机架号")) CommunicatorConnections.Add("机架号", "0");
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if (!CommunicatorConnections.Contains("插槽号")) CommunicatorConnections.Add("插槽号", "1");
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if (!CommunicatorConnections.Contains("型号")) CommunicatorConnections.Add("型号", CpuType.S71500);
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if (!CommunicatorConnections.Contains("变量地址")) CommunicatorConnections.Add("变量地址", "DB1.DBD0");
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if (!CommunicatorConnections.Contains("数据类型")) CommunicatorConnections.Add("数据类型", "String");
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// 兼容旧配置 "端口"
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if (CommunicatorConnections.Contains("端口"))
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{
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CommunicatorConnections["插槽号"] = CommunicatorConnections["端口"];
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}
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// 设置默认心跳消息
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strHeartbeat = "HEARTBEAT";
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}
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public override bool Connect()
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{
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try
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{
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// 更新参数
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if (CommunicatorConnections.Contains("地址")) ip = CommunicatorConnections["地址"].ToString();
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if (CommunicatorConnections.Contains("机架号"))
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short.TryParse(CommunicatorConnections["机架号"].ToString(), out rack);
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if (CommunicatorConnections.Contains("插槽号"))
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short.TryParse(CommunicatorConnections["插槽号"].ToString(), out slot);
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else if (CommunicatorConnections.Contains("端口"))
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short.TryParse(CommunicatorConnections["端口"].ToString(), out slot);
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if (CommunicatorConnections.Contains("型号"))
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{
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if (CommunicatorConnections["型号"] is CpuType type)
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cpuType = type;
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else
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Enum.TryParse(CommunicatorConnections["型号"].ToString(), out cpuType);
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}
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if (CommunicatorConnections.Contains("变量地址"))
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{
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variable = CommunicatorConnections["变量地址"].ToString();
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}
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if (CommunicatorConnections.Contains("数据类型"))
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{
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dataType = CommunicatorConnections["数据类型"].ToString();
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}
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// 关闭旧连接
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plc?.Close();
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plc = new Plc(cpuType, ip, rack, slot);
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plc.Open();
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if (plc.IsConnected)
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{
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bConnected = true;
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AsyncLogHelper.Info($"Device:[{CommunicatorName}] 已连接到 {ip} 机架:{rack} 插槽:{slot}");
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return true;
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}
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else
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{
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bConnected = false;
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AsyncLogHelper.Error($"Device:[{CommunicatorName}] 连接失败: IsConnected 为 false");
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return false;
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}
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}
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catch (Exception ex)
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{
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bConnected = false;
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AsyncLogHelper.Error($"Device:[{CommunicatorName}] 连接错误: {ex.Message}");
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return false;
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}
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}
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public override bool Disconnect()
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{
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try
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{
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if (plc != null)
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{
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plc.Close();
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bConnected = false;
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AsyncLogHelper.Info($"Device:[{CommunicatorName}] 已断开连接");
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}
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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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AsyncLogHelper.Error($"Device:[{CommunicatorName}] 断开连接错误: {ex.Message}");
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return false;
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}
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}
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public override bool SendMessage(string message)
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{
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if (plc == null || !plc.IsConnected)
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{
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Msg = "连接未开启";
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return false;
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}
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if (message == strHeartbeat) return plc.IsConnected;
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try
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{
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string targetVar = variable;//"DB103.DBD0";
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string strValue = message;
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// 简单的协议解析：地址:值
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if (message.Contains(":"))
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{
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var parts = message.Split(new char[] { ':' }, 2);
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if (parts.Length == 2 && !string.IsNullOrWhiteSpace(parts[0]))
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{
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targetVar = parts[0];
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strValue = parts[1];
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}
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}
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object valueToWrite = strValue;
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// 获取当前数据类型配置
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string currentDataType = CommunicatorConnections.Contains("数据类型") ? CommunicatorConnections["数据类型"].ToString() : "String";
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// 根据配置的数据类型进行转换
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try
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{
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switch (currentDataType)
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{
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case "Bool":
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{
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if (strValue == "1")
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{
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valueToWrite = true;
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}
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else if (strValue == "0")
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{
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valueToWrite = false;
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}
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else
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{
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valueToWrite = bool.Parse(strValue);
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}
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break;
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}
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case "Byte":
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{
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valueToWrite = byte.Parse(strValue);
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break;
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}
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case "Int": // 16-bit
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{
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valueToWrite = short.Parse(strValue);
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break;
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}
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case "DInt": // 32-bit
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{
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valueToWrite = int.Parse(strValue);
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break;
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}
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case "Word": // 16-bit unsigned
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{
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valueToWrite = ushort.Parse(strValue);
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break;
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}
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case "DWord": // 32-bit unsigned
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{
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valueToWrite = uint.Parse(strValue);
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break;
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}
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case "Real": // Float
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valueToWrite = float.Parse(strValue);
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break;
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case "Double": // LReal
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{
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valueToWrite = double.Parse(strValue);
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break;
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}
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case "String":
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default:
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{
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valueToWrite = strValue;
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break;
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}
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}
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}
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catch (FormatException)
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{
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Msg = $"无效的{currentDataType}值，请输入正确格式。";
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if (currentDataType == "Bool") Msg += " (true/false 或 1/0)";
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AsyncLogHelper.Error($"Device:[{CommunicatorName}] {Msg}");
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return false;
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}
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catch (Exception castEx)
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{
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Msg = $"数据转换错误({currentDataType}): {castEx.Message}";
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AsyncLogHelper.Error($"Device:[{CommunicatorName}] {Msg}");
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return false;
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}
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// 尝试写入
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plc.Write(targetVar, valueToWrite);
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AsyncLogHelper.Info($"Device:[{CommunicatorName}] 写入({currentDataType}) {targetVar} = {valueToWrite}");
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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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Msg = $"发送消息错误: {ex.Message}";
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AsyncLogHelper.Error($"Device:[{CommunicatorName}] {Msg}");
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return false;
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}
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}
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public override string ReceiveMsg()
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{
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if (plc == null || !plc.IsConnected) return string.Empty;
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try
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{
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// 获取当前数据类型配置
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string currentDataType = CommunicatorConnections.Contains("数据类型") ? CommunicatorConnections["数据类型"].ToString() : "String";
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if (currentDataType == "String")
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{
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var match = Regex.Match(variable, @"DB(\d+)\.DB[B|W|D|X]?(\d+)", RegexOptions.IgnoreCase);
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if (match.Success)
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{
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try
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{
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int db = int.Parse(match.Groups[1].Value);
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int startByte = int.Parse(match.Groups[2].Value);
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// 读取头部 (MaxLen, ActLen)
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byte[] header = plc.ReadBytes(DataType.DataBlock, db, startByte, 2);
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if (header != null && header.Length >= 2)
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{
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int actLen = header[1];
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if (actLen > 0)
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{
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// 读取实际字符数据
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byte[] strBytes = plc.ReadBytes(DataType.DataBlock, db, startByte + 2, actLen);
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strReceiveMsg = Encoding.ASCII.GetString(strBytes);
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return strReceiveMsg;
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}
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else
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{
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strReceiveMsg = string.Empty;
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return strReceiveMsg;
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}
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}
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}
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catch (Exception ex)
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{
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AsyncLogHelper.Error($"Device:[{CommunicatorName}] 读取S7String失败: {ex.Message}");
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}
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}
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// 如果正则不匹配或读取失败，回退到默认读取
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}
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var result = plc.Read(variable);
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if (result != null)
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{
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// 尝试根据 dataType 格式化输出 (S7.Net 读出来的类型可能与预期不符，特别是 DWord/Real)
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// 例如 DBD0 默认读出来是 UInt32，如果 dataType 是 Real，需要转换
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if (currentDataType == "Real" && (result is uint || result is int))
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{
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byte[] bytes = BitConverter.GetBytes(Convert.ToUInt32(result));
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float f = BitConverter.ToSingle(bytes, 0);
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strReceiveMsg = f.ToString();
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}
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else
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{
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strReceiveMsg = result.ToString();
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}
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return strReceiveMsg;
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}
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}
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catch (Exception ex)
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{
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AsyncLogHelper.Error($"Device:[{CommunicatorName}] 接收消息错误: {ex.Message}");
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}
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return string.Empty;
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}
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/// <summary>
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/// 带填充的 S7 字符串写入，防止残留数据
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/// </summary>
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private bool WriteS7StringWithPadding(string address, string value)
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{
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try
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{
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// 解析地址，例如 DB1.DBB0, DB1.DBD0
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var match = Regex.Match(address, @"DB(\d+)\.DB[B|W|D|X]?(\d+)", RegexOptions.IgnoreCase);
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if (!match.Success) return false;
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int db = int.Parse(match.Groups[1].Value);
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int startByte = int.Parse(match.Groups[2].Value);
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byte maxLen = 254; // 默认最大值
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try
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{
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var header = plc.ReadBytes(DataType.DataBlock, db, startByte, 1);
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if (header != null && header.Length > 0 && header[0] > 0)
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{
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maxLen = header[0];
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}
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}
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catch { }
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byte[] buffer = new byte[maxLen + 2];
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buffer[0] = maxLen;
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int currentLen = Math.Min(value.Length, maxLen);
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buffer[1] = (byte)currentLen;
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if (currentLen > 0)
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{
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byte[] strBytes = Encoding.ASCII.GetBytes(value);
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Array.Copy(strBytes, 0, buffer, 2, Math.Min(strBytes.Length, currentLen));
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}
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plc.WriteBytes(DataType.DataBlock, db, startByte, buffer);
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return true;
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}
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catch
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{
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return false;
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}
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}
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public object Read(string address)
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{
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if (plc == null || !plc.IsConnected)
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{
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return null;
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}
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return plc.Read(address);
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}
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public void Write(string address, object value)
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{
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if (plc != null && plc.IsConnected)
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{
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plc.Write(address, value);
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}
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}
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public override void Dispose()
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{
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try
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{
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AsyncLogHelper.Info($"Device:[{CommunicatorName}],释放资源(Dispose)");
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plc?.Close();
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plc = null;
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GC.SuppressFinalize(this);
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}
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catch (Exception ex)
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{
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AsyncLogHelper.Error($"Device:[{CommunicatorName}],释放资源(Dispose)错误: " + ex.Message);
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}
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}
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public override bool SendMessage(byte[] message)
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{
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throw new NotImplementedException();
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}
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}
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}
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