lj_plc/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/EngineeringDebuggingMode/PlcCommunicationUtil.cs

using Mesnac.Action.ChemicalWeighing.Entity;
using Mesnac.PlcUtils;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;


namespace Mesnac.Action.ChemicalWeighing.EngineeringDebuggingMode
{
    
    public class PlcCommunicationUtil
    {
        string DmName;
        BasePlcHelper Plc = BasePlcHelper.Instance;




        /// <summary>
        /// 根据属性名和现在选择的数据块名得到PLC数据块的具体引用
        /// </summary>
        /// <param name="dmValue">数据块属性名</param>
        /// <returns></returns>
        private DataKeyValue GetDataNameValue(string dmValue)
        {
            return new DataKeyValue(DmName + dmValue);
        }

        /// <summary>
        /// 从PLC中读取值
        /// </summary>
        /// <param name="dmValue">要读取的属性</param>
        /// <returns></returns>
        private int GetDataToInt(String dmValue)
        {
            return GetDataNameValue(dmValue).NowValue.ToInt();
        }

        /// <summary>
        /// 向PLC中写入值
        /// </summary>
        /// <param name="dmValue">要写入的属性</param>
        /// <param name="value">写入的值</param>
        private void SetDataValue(String dmValue, int value)
        {
            Plc.PlcWriteByDataKey(GetDataNameValue(dmValue), new Object[] { value });
        }
    }
}