/// <summary>
/// 批量写OPC变量
/// </summary>
/// <param name="aItems">变量名</param>
/// <param name="aValues">要写的值</param>
/// <param name="aOPCGroup">组名</param>
/// <returns>是否写成功</returns>
public bool WriteValues(ref string[] aItems, ref object[] aValues, string aOPCGroup)
{
//判断是否连接OPC服务
if (!IsConnected()) return false;
//判断是否都有设定值
if (aItems.Count() != aValues.Count()) return false;
//获得新的要读的变量表
string[] strItemTemp = aItems.ToArray();
//是否已经存在此组
bool bolIsThere = false;
//变量List
OPCItemList opcItemListTemp = new OPCItemList();
//判读是否已经存在此组
foreach (OPCItemList itemList in fOPCItemList)
{
if (itemList.OPCGroupInfo.Name == aOPCGroup)
{
opcItemListTemp = itemList;
bolIsThere = true;
}
}
if (bolIsThere)
{
//获得需要写的变量
var varNeedWriteItems = from varNeedItem in opcItemListTemp.ListOPCItemList
where strItemTemp.Contains(varNeedItem.ItemID)
select varNeedItem;
//写变量
int i = 0;
foreach (OPCItem item in varNeedWriteItems)
{
if (item.Quality == Convert.ToInt32(OPCQuality.OPCQualityGood))
{
try
{
item.Write((object)aValues[i]);
}
catch
{
////item.Quality = Convert.ToInt32(OPCQuality.OPCQualityBad);
////Log.WriteLog("error");
////int j = 0;
////foreach (OPCItem item1 in varNeedWriteItems)
////{
//// Log.WriteLog(item1.ItemID + " : " + strItemTemp[j]);
////}
////Log.WriteLog(item.ItemID + " : " + aValues[i].ToString());
//return false;
}
}
i++;
}
}
else
{
//Log.WriteLog("bolIsThere");
return false;
}
return true;
}
/// <summary>
/// 写变量
/// </summary>
/// <param name="aItem">变量名</param>
/// <param name="aValues">要写的值</param>
/// <param name="aOPCGroup">变量所属的组</param>
/// <returns>是否写成功</returns>
public bool WriteValue(string aItem, string aValues, string aOPCGroup)
{
//判断是否连接OPC服务
if (!IsConnected()) return false;
//是否已经存在此组
bool bolIsThere = false;
//变量List
OPCItemList opcItemListTemp = new OPCItemList();
//判读是否已经存在此组
foreach (OPCItemList itemList in fOPCItemList)
{
if (itemList.OPCGroupInfo.Name == aOPCGroup)
{
opcItemListTemp = itemList;
bolIsThere = true;
}
}
try
{
//写变量
foreach (OPCItem item in opcItemListTemp.ListOPCItemList)
{
if (item.ItemID == aItem)
{
try
{
item.Write(aValues);
//写成功
return true;
}
catch
{
//写失败
return false;
}
}
}
//无此地址
//return false;
}
catch
{
//写异常
return false;
}
//未找到相应的变量
return false;
}
public bool ReadValue(string aItem, out string aValues, string aOPCGroup)
{
//初始值
aValues = decimal.MaxValue.ToString();
//判断是否连接OPC服务
if (!IsConnected()) return false;
//是否已经存在此组
bool bolIsThere = false;
//变量List
OPCItemList opcItemListTemp = new OPCItemList();
//判读是否已经存在此组
foreach (OPCItemList itemList in fOPCItemList)
{
if (itemList.OPCGroupInfo.Name == aOPCGroup)
{
opcItemListTemp = itemList;
bolIsThere = true;
}
}
//如果存在该组
if (bolIsThere)
{
try
{
//读变量
foreach (OPCItem item in opcItemListTemp.ListOPCItemList)
{
//变量值
object objValue;
//变量状态
object objQuality;
//变量更新时间戳
object objTimeStamp;
//读取是否成功
bool IsReadSuccess = true;
//读变量
try
{
item.Read(Convert.ToInt16(OPCDataSource.OPCCache), out objValue, out objQuality, out objTimeStamp);
}
catch
{
IsReadSuccess = false;
}
//如果读失败或状态不是好的或值为空都读为最大值
if (!IsReadSuccess || item.Quality != Convert.ToInt32(OPCQuality.OPCQualityGood) || item.Value == null)// || oi.Value == DBNull.Value)
{
aValues = decimal.MaxValue.ToString();
}
}
}
catch
{
//写异常
return false;
}
}
//未找到相应的变量
return false;
}
/// <summary>
/// 批量读OPC变量
/// </summary>
/// <param name="aItems">变量表</param>
/// <param name="aOPCGroup">变量组</param>
/// <returns></returns>
public bool ReadValues(ref GroupItem aItems)
{
//判断是否连接OPC服务
if (!IsConnected()) return false;
//变量值
List<decimal> listValues = new List<decimal>();
//获得新的要读的变量表
string[] strItemTemp = aItems.StrItem.ToArray();
//是否已经存在此组
bool bolIsThere = false;
//变量List
OPCItemList opcItemListTemp = new OPCItemList();
//判读是否已经存在此组
foreach (OPCItemList itemList in fOPCItemList)
{
if (itemList.OPCGroupInfo.Name == aItems.GroupName)
{
opcItemListTemp = itemList;
bolIsThere = true;
}
}
//判断是否存在该组
if (!bolIsThere) return false;
//获得需要读的变量
var varNeedReadItems = from varNeedItem in opcItemListTemp.ListOPCItemList
where strItemTemp.Contains(varNeedItem.ItemID)
select varNeedItem;
OPCItem[] opcNeedReadIems = varNeedReadItems.ToArray();
//读变量
for (int i = 0; i < opcNeedReadIems.Length; i++)
{
if (opcNeedReadIems[i].ItemID == aItems.StrItem[i])
{
//变量值
object objValue;
//变量状态
object objQuality;
//变量更新时间戳
object objTimeStamp;
//读取是否成功
bool IsReadSuccess = true;
//读变量
try
{
opcNeedReadIems[i].Read(Convert.ToInt16(OPCDataSource.OPCCache), out objValue, out objQuality, out objTimeStamp);
}
catch
{
IsReadSuccess = false;
}
//如果读失败或状态不是好的或值为空都读为最大值
if (!IsReadSuccess || opcNeedReadIems[i].Quality == Convert.ToInt32(OPCQuality.OPCQualityBad) || opcNeedReadIems[i].Value == null)/*|| oi.Value == DBNull.Value)*/
//if (!IsReadSuccess || item.Value == null)
{
//Log.WriteLog("IsReadSuccess : " + IsReadSuccess.ToString() + " item.Quality : " + item.Quality.ToString() + " item.Value : " + item.Value);
//listValues.Add(decimal.MaxValue);
//if (aItems.Item[i].ItemType == "BOOL")
//{
// aItems.Item[i].Value = false;
//}
aItems.Item[i].Status = ValueState.STATUS_BAD;
aItems.Item[i].UpdateTime = DateTime.Now;
}
//正常读取
else
{
try
{
//更新变量值
aItems.Item[i].Value = Convert.ToDecimal(opcNeedReadIems[i].Value);
//更新变量状态
aItems.Item[i].Status = ValueState.STATUS_GOOG;
aItems.Item[i].UpdateTime = DateTime.Now;
}
catch
{
//objVal = decimal.MaxValue;
//if (aItems.Item[i].ItemType == "BOOL")
//{
// aItems.Item[i].Value = false;
//}
//更新变量状态
aItems.Item[i].Status = ValueState.STATUS_BAD;
aItems.Item[i].UpdateTime = DateTime.Now;
}
}
}
}
return true;
}
/// <summary>
/// 添加要读取OPC服务变量
/// </summary>
/// <param name="aItems">要添加的变量表</param>
/// <param name="aOPCGroup">要添加的组</param>
/// <returns>是否添加成功</returns>
public bool AddItems(ref string[] aItems, string aOPCGroup)
{
//错误信号
bool iRet = true;
//是否已经存在此组
bool bolIsThere = false;
//添加变量List
OPCItemList opcItemListTemp = new OPCItemList();
//判读是否已经存在此组
foreach (OPCItemList itemList in fOPCItemList)
{
if (itemList.OPCGroupInfo.Name == aOPCGroup)
{
opcItemListTemp = itemList;
bolIsThere = true;
}
}
//不存在此组，则添加此组
if (bolIsThere == false)
{
//添加组
opcItemListTemp.OPCGroupInfo = fOPCServer.OPCGroups.Add(aOPCGroup);
//设置组读取周期
opcItemListTemp.OPCGroupInfo.UpdateRate = UPDATE_RATE;
//是否活动
opcItemListTemp.OPCGroupInfo.IsActive = true;
//变量表
opcItemListTemp.ListOPCItemList = new List<OPCItem>();
//添加变量
fOPCItemList.Add(opcItemListTemp);
}
//获得变量添加的句柄
int iItemClientHandle = opcItemListTemp.ListOPCItemList.Count;
//向组中添加变量
foreach (string item in aItems)
{
try
{
opcItemListTemp.ListOPCItemList.Add(opcItemListTemp.OPCGroupInfo.OPCItems.AddItem(item, iItemClientHandle));
iItemClientHandle++;
}
catch
{
//添加变量失败
//return false;
//iItemClientHandle--;
#if DEBUG
Log.WriteLog("OPC Item Add Error: " + item);
#else
Log.WriteLog("OPC Item Add Error: " + item);
#endif
iRet = false;
}
}
//添加状态
return iRet;
}