using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Khd.Core.Plc
{
    /// <summary>
    /// Plc帮助类
    /// </summary>
    public static class StaticPlcHelper
    {
        /// <summary>
        /// 进行高低位转换后，写入Plc地址
        /// </summary>
        /// <param name="plc"> plc </param>
        /// <param name="address"> 写入地址 </param>
        /// <param name="valueString"> 值 </param>
        /// <param name="len"> 长度 </param>
        public static void WriteToPoint(this Plc.S7.Plc plc,string address,string valueString,string len)
        {
            var value = GetValue(len, valueString);
            plc.Write(address, value);
        }

        /// <summary>
        /// 电气写入点位高低位转换
        /// </summary>
        /// <param name="len">点位地址位长度</param>
        /// <param name="value">写入数值</param>
        /// <returns></returns>
        private static object GetValue(string len, string value)
        {
            if (len == "2")
            {
                return Convert.ToInt16(value);
            }
            if (len == "4")
            {
                return Convert.ToInt32(value);
            }
            return 0;
        }
    }
}