S7Helper.cs
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using HHECS.Bll;
using HHECS.Model;
using S7.Net;
using S7.Net.Types;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace HHECS.OPC
{
public class S7Helper
{
/// <summary>
/// 将DataItem中的value强制转换后赋值给value，用于读
/// </summary>
/// <param name="plc"></param>
/// <param name="props"></param>
/// <returns></returns>
public static BllResult ConvertPLCToNet(List<EquipmentProp> props)
{
try
{
foreach (var item in props)
{
switch (item.EquipmentTypePropTemplate.DataType)
{
case "DINT":
item.Value = ((uint)item.DataItem.Value).ConvertToInt().ToString();
break;
case "INT":
item.Value = ((ushort)item.DataItem.Value).ConvertToShort().ToString();
break;
case "BYTE":
case "DWORD":
case "BOOL":
case "WORD": item.Value = item.DataItem.Value.ToString(); break;
case "CHAR": item.Value = item.DataItem.Value.ToString().Trim().Replace("$03","").Replace("\u0003", "").Replace("\0", ""); break;
default:
item.Value = item.DataItem.Value.ToString();
break;
}
}
return BllResultFactory.Sucess("成功");
}
catch (Exception ex)
{
return BllResultFactory.Error($"数据类型转换异常:{ex.Message}");
}
}
/// <summary>
/// 将属性value中的值强制转换赋值给dataitem，用于向PLC写入
/// </summary>
/// <param name="plc"></param>
/// <param name="props"></param>
/// <param name="templates"></param>
/// <returns></returns>
public static BllResult ConvertNetToPLC(List<EquipmentProp> props)
{
try
{
foreach (var item in props)
{
switch (item.EquipmentTypePropTemplate.DataType)
{
case "INT":
item.DataItem.Value = Convert.ToInt16(item.Value);
break;
case "DINT":
item.DataItem.Value = Convert.ToInt32(item.Value);
break;
case "WORD":
item.DataItem.Value = Convert.ToUInt16(item.Value);
break;
case "DWORD":
item.DataItem.Value = Convert.ToUInt32(item.Value);
break;
case "CHAR":
item.DataItem.Value = item.Value.ToString();
break;
case "BOOL":
item.DataItem.Value = Convert.ToBoolean(item.Value);
break;
default:
item.DataItem.Value = item.Value.ToString();
break;
}
}
return BllResultFactory.Sucess("成功");
}
catch (Exception ex)
{
return BllResultFactory.Error($"数据类型转换异常:{ex.Message}");
}
}
/// <summary>
/// 从PLC读取值，读取的值赋值给value属性
/// </summary>
/// <param name="plc"></param>
/// <param name="props"></param>
/// <param name="splitCount"></param>
/// <param name="templates"></param>
/// <returns></returns>
public static BllResult PlcSplitRead(Plc plc, List<EquipmentProp> props, int splitCount)
{
string tamp = "";
if (props.Count == 0)
{
return BllResultFactory.Error("待读集合无数据");
}
try
{
var tempList = props.Select(t => t.DataItem).ToList();
int preIndex = 0;
int currentIndex = splitCount;
plc.Open();
while (preIndex < tempList.Count)
{
List<DataItem> temp1 = null;
if (preIndex < tempList.Count)
{
temp1 = tempList.Skip(preIndex).Take(currentIndex).ToList();
preIndex += currentIndex;
}
else
{
temp1 = tempList.Skip(preIndex).ToList();
}
//tamp = props[preIndex].EquipmentTypePropTemplateCode;
plc.ReadMultipleVars(temp1);
}
//赋值属性
var result = ConvertPLCToNet(props);
if (result.Success)
{
return BllResultFactory.Sucess("去读成功.");
}
else
{
return BllResultFactory.Error($"读取失败：{result.Msg}");
}
}
catch (Exception ex)
{
return BllResultFactory.Error($"读取PLC值出错：{ex.Message}");
}
}
/// <summary>
/// 写入PLC值，待写的值为value属性
/// </summary>
/// <param name="plc"></param>
/// <param name="props"></param>
/// <param name="splitCount"></param>
/// <param name="templates"></param>
/// <returns></returns>
public static BllResult PlcSplitWrite(Plc plc, List<EquipmentProp> props, int splitCount)
{
if (props.Count == 0)
{
return BllResultFactory.Error("待写集合无数据");
}
if (splitCount > 20)
{
return BllResultFactory.Error("分批读写个数不能超过20");
}
//先转换
var result = ConvertNetToPLC(props);
if (result.Success)
{
try
{
var tempList = props.Select(t => t.DataItem).ToList();
int preIndex = 0;
int currentIndex = splitCount;
plc.Open();
while (preIndex < tempList.Count)
{
List<DataItem> temp1 = null;
if (preIndex < tempList.Count)
{
temp1 = tempList.Skip(preIndex).Take(currentIndex).ToList();
preIndex += currentIndex;
}
else
{
temp1 = tempList.Skip(preIndex).ToList();
}
plc.Write(temp1.ToArray());
}
return BllResultFactory.Sucess("写入成功");
}
catch (Exception ex)
{
return BllResultFactory.Error($"写入出现异常：{ex.Message}");
}
}
else
{
return BllResultFactory.Error($"写入失败，数据转换异常：{result.Msg}");
}
}
/// <summary>
/// 创建dataitem，这里解决了原本库中bit位bug，支持char，标准格式DB1000.DBC20.30，表示读取DB1000，起始地址20,以char的形式读取，读取30位;
/// char读写时，超出部分会被截断
/// </summary>
/// <param name="address"></param>
/// <returns></returns>
public static DataItem FromAddress(string address)
{
Parse(address, out var dataType, out var dbNumber, out var varType, out var startByte,
out var bitNumber, out var count);
return new DataItem
{
DataType = dataType,
DB = dbNumber,
VarType = varType,
StartByteAdr = startByte,
BitAdr = (byte)(bitNumber == -1 ? 0 : bitNumber),
Count = count
};
}
public static void Parse(string input, out DataType dataType, out int dbNumber, out VarType varType, out int address, out int bitNumber, out int count)
{
count = 1;
bitNumber = -1;
dbNumber = 0;
switch (input.Substring(0, 2))
{
case "DB":
string[] strings = input.Split(new char[] { '.' });
if (strings.Length < 2)
throw new BllException("To few periods for DB address");
dataType = DataType.DataBlock;
dbNumber = int.Parse(strings[0].Substring(2));
address = int.Parse(strings[1].Substring(3));
string dbType = strings[1].Substring(0, 3);
switch (dbType)
{
case "DBB":
varType = VarType.Byte;
return;
case "DBW":
varType = VarType.Word;
return;
case "DBD":
varType = VarType.DWord;
return;
case "DBX":
bitNumber = int.Parse(strings[2]);
if (bitNumber > 7)
throw new BllException("Bit can only be 0-7");
varType = VarType.Bit;
return;
case "DBC":
varType = VarType.String;
count = int.Parse(strings[2]);
return;
default:
throw new BllException();
}
case "EB":
// Input byte
dataType = DataType.Input;
dbNumber = 0;
address = int.Parse(input.Substring(2));
varType = VarType.Byte;
return;
case "EW":
// Input word
dataType = DataType.Input;
dbNumber = 0;
address = int.Parse(input.Substring(2));
varType = VarType.Word;
return;
case "ED":
// Input double-word
dataType = DataType.Input;
dbNumber = 0;
address = int.Parse(input.Substring(2));
varType = VarType.DWord;
return;
case "AB":
// Output byte
dataType = DataType.Output;
dbNumber = 0;
address = int.Parse(input.Substring(2));
varType = VarType.Byte;
return;
case "AW":
// Output word
dataType = DataType.Output;
dbNumber = 0;
address = int.Parse(input.Substring(2));
varType = VarType.Word;
return;
case "AD":
// Output double-word
dataType = DataType.Output;
dbNumber = 0;
address = int.Parse(input.Substring(2));
varType = VarType.DWord;
return;
case "MB":
// Memory byte
dataType = DataType.Memory;
dbNumber = 0;
address = int.Parse(input.Substring(2));
varType = VarType.Byte;
return;
case "MW":
// Memory word
dataType = DataType.Memory;
dbNumber = 0;
address = int.Parse(input.Substring(2));
varType = VarType.Word;
return;
case "MD":
// Memory double-word
dataType = DataType.Memory;
dbNumber = 0;
address = int.Parse(input.Substring(2));
varType = VarType.DWord;
return;
default:
switch (input.Substring(0, 1))
{
case "E":
case "I":
// Input
dataType = DataType.Input;
varType = VarType.Bit;
break;
case "A":
case "O":
// Output
dataType = DataType.Output;
varType = VarType.Bit;
break;
case "M":
// Memory
dataType = DataType.Memory;
varType = VarType.Byte;
break;
case "T":
// Timer
dataType = DataType.Timer;
dbNumber = 0;
address = int.Parse(input.Substring(1));
varType = VarType.Timer;
return;
case "Z":
case "C":
// Counter
dataType = DataType.Timer;
dbNumber = 0;
address = int.Parse(input.Substring(1));
varType = VarType.Counter;
return;
default:
throw new BllException(string.Format("{0} is not a valid address", input.Substring(0, 1)));
}
string txt2 = input.Substring(1);
if (txt2.IndexOf(".") == -1)
throw new BllException("To few periods for DB address");
address = int.Parse(txt2.Substring(0, txt2.IndexOf(".")));
bitNumber = int.Parse(txt2.Substring(txt2.IndexOf(".") + 1));
if (bitNumber > 7)
throw new BllException("Bit can only be 0-7");
return;
}
}
}
}