SjMes/PunchAndWeld/OPCHelper.cs

using OPCAutomation;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;

namespace PunchAndWeld
{
    public class OPCHelper
    {
        public OPCServer opcServer;
        public OPCGroups opcGroups;
        public OPCGroup opcGroup1;
        public OPCItems opcItems1;
        public OPCItem[] opcItemm1;

        public OPCGroup opcGroup2;
        public OPCItems opcItems2;
        public OPCItem[] opcItemm2;
        public string[] ItemIDs;
        public object ItemValues;
        public object Qualities;
        public object TimeStamps;
        public bool Connected = false;

        public bool CreateServer()
        {
            try
            {
                opcServer = new OPCServer();
            }
            catch(Exception ex)
            {
                LogHelper.WriteErrLogBase(ex.ToString(), "CreateServer");
                return false;
            }
            return true;
        }

        public bool ConnectServer(string strHostIP, string strHostName)
        {
            try
            {
                opcServer.Connect(strHostName, strHostIP);
            }
            catch
            {
                return false;
            }
            return true;
        }

        public void SetGroupProperty(OPCGroup opcGroup, int updateRate)
        {
            opcGroup.IsActive = true;
            opcGroup.DeadBand = 0;
            opcGroup.UpdateRate = updateRate;
            opcGroup.IsSubscribed = true;
        }

        public string ReadSingleValueFromOPC1(int i)
        {
            object ItemValues;
            object Qualities;
            object TimeStamps;

            opcItemm1[i].Read(1, out ItemValues, out Qualities, out TimeStamps);

            if ((ItemValues != null) && (Qualities.ToString() != "Good"))
            {
                return ItemValues.ToString();
            }
            else
            {
                return "";
            }
        }
        public int ReadSingleValueFromOPC2(int i)
        {
            object ItemValues;
            object Qualities;
            object TimeStamps;

            opcItemm1[i].Read(1, out ItemValues, out Qualities, out TimeStamps);

            if ((ItemValues != null) && (Qualities.ToString() != "Good"))
            {
                return Convert.ToInt32(ItemValues.ToString());
            }
            else
            {
                return 0;
            }
        }

        public string ReadSingleValueFromOPC3(int i)
        {
            object ItemValues;
            object Qualities;
            object TimeStamps;

            opcItemm2[i].Read(1, out ItemValues, out Qualities, out TimeStamps);

            if ((ItemValues != null) && (Qualities.ToString() != "Good"))
            {
                return ItemValues.ToString();
            }
            else
            {
                return "";
            }
        }
    }
}