SIS系統openPlant實時數據庫的操作

給電廠做的項目，需要從SIS取數，之前做過很多廠的SIS都是PI實時數據庫，這個廠用的是上海麥傑的openPlant，取數方式大同小異，但是感覺openplant要比PI快很多，用着很順手，上千個點秒級取數 相當給力；還接觸過一個廠的SIS用的是華電天仁VeStore，但是沒有取數操作過；

下面看看對openplant的操作

private int m_port = 8200;
        private int m_timeout = 5; 
        private int m_version = 4;
        private string ipAddr;
        private string uName;
        private string pwd;

        bool isConn = false;

        IntPtr op = new IntPtr();
        IntPtr group;      //創建點組

        public OpenPlant(string ipAddr, string uName, string pwd) 
        {
            this.ipAddr = ipAddr;
            this.uName = uName;
            this.pwd = pwd;
            ConnOpenPlant();
        }

        /// <summary>
        /// 連接 
        /// </summary>
        /// <param name="ipAddr"></param>
        /// <param name="uName"></param>
        /// <param name="pwd"></param>
        /// <returns></returns>
        public bool ConnOpenPlant()
        {
            //if (op.ToInt32() > 1) //這個判斷不準確 
            //    return true;

            if (isConn)
                return true;

            try
            {
                op = OPAPI2.op2_init(m_version, ipAddr, m_port, m_timeout, uName, pwd, ".", 100);
                group = OPAPI2.op2_new_group();
                //GlobalVariables.OPCState = true;//如果找不到也不會報錯 ZZH 
            }
            catch (Exception ex)
            {
                GlobalVariables.OPCState = false;
                isConn = false;
                WriteLog.WriteLogs(ex.ToString());
                return false;
            }

            if (op.ToInt32() == 0)
            {
                GlobalVariables.OPCState = false;
                isConn = false;
                OPAPI2.op2_free_group(group); //網絡斷開組依然會創建，所以要釋放 ZZH 
                return false;
            }
            else
            {
                GlobalVariables.OPCState = true;
                isConn = true;
            }

            return true;
        }

        /// <summary>
        /// 關閉 
        /// </summary>
        public void CloseOpenPlant()
        {
            try
            {
                if (group.ToInt32() > 0)
                {
                    //關閉的時候釋放組 
                    OPAPI2.op2_free_group(group);
                    TagHS.Clear();
                }
                OPAPI2.op2_close(op);
                isConn = false;
                GC.Collect();
            }
            catch 
            { 
                GC.Collect();
            }
        }


        Hashtable TagHS = new Hashtable(); 
        /// <summary>
        /// 取數 
        /// </summary>
        /// <param name="tags"></param>
        /// <returns></returns>
        public string[] GetOPValues(List<string> tags) 
        {
            try
            { 
                if (!ConnOpenPlant())
                    return null;
                if (group.ToInt32() <= 0)
                {
                    group = OPAPI2.op2_new_group(); //創建點組
                    TagHS.Clear(); //如果新建了組，需要把HashTable清空 ZZH 
                }

                foreach (string tag in tags)
                {
                    if (!TagHS.ContainsKey(tag))
                    {
                        OPAPI2.op2_add_group_point(group, tag);
                        TagHS.Add(tag, "");
                    }
                }

                int pointNum = TagHS.Count;
                string[] resultStr = new string[pointNum];

                //取pointNum個點的實時
                short[] status = new short[pointNum];
                int[] errors = new int[pointNum];
                int[] tm = new int[pointNum];
                double[] read_value = new double[pointNum];

                int ret = OPAPI2.op2_get_value_byname(op, group, tm, status, read_value, errors);

                if (ret != 0)
                {
                    try
                    { 
                        if(isConn)
                            CloseOpenPlant();
                        GlobalVariables.OPCState = false;
                        return null;
                    }
                    catch 
                    {  }
                }

                string strValue = "";
                for (int i = 0; i < read_value.Count(); i++)
                {
                    strValue += "點:" + tags[i] + ", 值:" + read_value[i] + "\r\n";
                    resultStr[i] = read_value[i].ToString();
                }
                WriteLog.WriteLogs(strValue);
                return resultStr;
            }
            catch (Exception ee)
            {
                WriteLog.WriteLogs(ee.ToString());
                return null;
            }
        }

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