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, List<EquipmentTypePropTemplate> templates)
{
try
{
var temp = props.Join(templates, t => t.EquipmentTypePropTemplateId, i => i.Id, (prop, template) => new { prop, template }).ToList();
foreach (var item in temp)
{
switch (item.template.DataType)
{
case "BYTE":
case "DWORD":
case "BOOL":
case "WORD": item.prop.Value = item.prop.DataItem.Value.ToString(); break;
case "CHAR": item.prop.Value = ConverHelper.ASCIIToString((short[])item.prop.DataItem.Value).Trim().Replace("\u0003", ""); break;
default:
item.prop.Value = item.prop.DataItem.Value.ToString();
break;
}
}
return BllResultFactory.Sucess("成功");
}
catch (Exception ex)
{
return BllResultFactory.Error($"数据类型转换异常:{ex.Message}");
}
}
/// <summary>
/// 将属性value中的值强制转换赋值给dataitem，用于向PLC写入
/// </summary>
/// <param name="plc"></param>
/// <param name="props"></param>
/// <param name="templates"></param>
/// <returns></returns>
public static BllResult ConvertNetToPLC(List<EquipmentProp> props,List<EquipmentTypePropTemplate> templates)
{
try
{
var temp = props.Join(templates, t => t.EquipmentTypePropTemplateId, i => i.Id, (prop, template) => new { prop, template }).ToList();
foreach (var item in temp)
{
switch (item.template.DataType)
{
case "INT":
item.prop.DataItem.Value = Convert.ToInt16(item.prop.Value);
break;
case "DINT":
item.prop.DataItem.Value = Convert.ToInt32(item.prop.Value);
break;
case "WORD":
item.prop.DataItem.Value = Convert.ToUInt16(item.prop.Value);
break;
case "DWORD":
item.prop.DataItem.Value = Convert.ToUInt32(item.prop.Value);
break;
case "CHAR":
item.prop.DataItem.Value = ConverHelper.StringToASCII(item.prop.Value);
break;
default:
item.prop.DataItem.Value = item.prop.Value.BinStringToByte();
break;
}
}
return BllResultFactory.Sucess("成功");
}
catch (Exception ex)
{
return BllResultFactory.Error($"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, List<EquipmentTypePropTemplate> templates)
{
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();
}
plc.ReadMultipleVars(temp1);
}
//赋值属性
var result = ConvertPLCToNet(props, templates);
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, List<EquipmentTypePropTemplate> templates)
{
if (props.Count == 0)
{
return BllResultFactory.Error("待写集合无数据");
}
//先转换
var result = ConvertNetToPLC(props, templates);
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}");
}
}
}
}