/// <summary>
/// 主通信流程：Step 6：根据数据更新上位机相关信息
/// </summary>
protected void Update()
{
DateTime dt = DateTime.Now;
if (DataChange != null)
{
HistoryData[] values = new HistoryData[_changedList.Count];
int i = 0;
foreach (int index in _changedList)
{
ITag item = _items[index];
var itemData = item.Read();//这是从缓存Cache中读取的数据
if (item.Active)
{
item.Update(itemData, dt, QUALITIES.QUALITY_GOOD);
}
/*
* 下面的语言判断是否要更新有变化的Itag:
* 1.对敏感度为零的，只要有任何变化都要更新；？？浮点数和零 比较大小
* 2.对于浮点数，新值的变化要超过敏感的 百分比
*/
if (_deadband == 0 || (item.Address.VarType == DataType.FLOAT &&
(Math.Abs(itemData.Single / item.Value.Single - 1) > _deadband)))
{
values[i].ID = item.ID;
values[i].Quality = item.Quality;
values[i].Value = itemData;
values[i].TimeStamp = item.TimeStamp;
i++;
}
}
foreach (DataChangeEventHandler deleg in DataChange.GetInvocationList()) //批量调用绑定在事件上面的委托
{
deleg.BeginInvoke(this, new DataChangeEventArgs(1, values), null, null); //只在这个地方，才去调用绑定的事件，对那些更新周期为零的变量进行存储，存储周期随Group
}
}
else
{
foreach (int index in _changedList)
{
ITag item = _items[index];
if (item.Active)
{
item.Update(item.Read(), dt, QUALITIES.QUALITY_GOOD);
}
}
}
}
protected void Update()
{
DateTime dt = DateTime.Now;
if (DataChange != null)
{
HistoryData[] values = new HistoryData[_changedList.Count];
int i = 0;
foreach (int index in _changedList)
{
ITag item = _items[index];
var itemData = item.Read();
if (item.Active)
{
item.Update(itemData, dt, QUALITIES.QUALITY_GOOD);
}
if (_deadband == 0 || (item.Address.VarType == DataType.FLOAT &&
(Math.Abs(itemData.Single / item.Value.Single - 1) > _deadband)))
{
values[i].ID = item.ID;
values[i].Quality = item.Quality;
values[i].Value = itemData;
values[i].TimeStamp = item.TimeStamp;
i++;
}
}
foreach (DataChangeEventHandler deleg in DataChange.GetInvocationList())
{
deleg.BeginInvoke(this, new DataChangeEventArgs(1, values), null, null);
}
}
else
{
foreach (int index in _changedList)
{
ITag item = _items[index];
if (item.Active)
{
item.Update(item.Read(), dt, QUALITIES.QUALITY_GOOD);
}
}
}
_changedList.Clear();
}
public int BatchRead(DataSource source, bool isSync, params ITag[] itemArray)
{
if (itemArray == null)
{
return(-1);
}
int len = itemArray.Length;
byte[] bt = new byte[4];
byte[] data = new byte[3 + len * 2];
int j = 0;
data[j++] = fctHead;
data[j++] = fctReadMultiple;
data[j++] = source == DataSource.Cache ? (byte)0 : (byte)1;
bt = BitConverter.GetBytes(itemArray.Length);
data[j++] = bt[0];
data[j++] = bt[1];
data[j++] = bt[2];
data[j++] = bt[3];
for (int i = 0; i < len; i++)
{
ITag tag = itemArray[i];
bt = BitConverter.GetBytes(tag.ID);
data[j++] = bt[0];
data[j++] = bt[1];
data[j++] = (byte)(tag.Address.DataSize >> 3);
}
SocketError error;
_tcpSynCl.Send(data, 0, data.Length, SocketFlags.None, out error);
int result = _tcpSynCl.Receive(tcpSynClBuffer, 0, tcpSynClBuffer.Length, SocketFlags.None, out error);
j = 2;
if (error == SocketError.Success)
{
DateTime time = DateTime.UtcNow;
Storage value = Storage.Empty;
for (int i = 0; i < len; i++)
{
ITag tag = itemArray[i];
switch (tag.Address.VarType)
{
case DataType.BOOL:
value.Boolean = BitConverter.ToBoolean(tcpSynClBuffer, j++);
break;
case DataType.BYTE:
value.Byte = tcpSynClBuffer[j++];
break;
case DataType.SHORT:
value.Int16 = BitConverter.ToInt16(tcpSynClBuffer, j);
j += 2;
break;
case DataType.INT:
value.Int32 = BitConverter.ToInt32(tcpSynClBuffer, j);
j += 4;
break;
case DataType.FLOAT:
value.Single = BitConverter.ToSingle(tcpSynClBuffer, j);
j += 4;
break;
}
tag.Update(value, time, QUALITIES.QUALITY_GOOD);
}
return(0);
}
else
{
throw new SocketException((int)error);
}
}
private void ReciveData(object state)
{
if (state == null || !_active)
{
return;
}
byte[] bytes = new byte[_tcpASynCl.ReceiveBufferSize];
int result = 0;
SocketError error;
do
{
result = _tcpASynCl.Receive(bytes, 0, bytes.Length, SocketFlags.None, out error);
if (result > 5 && bytes[0] == 0xAB)
{
short len = BitConverter.ToInt16(bytes, 1);
short count = BitConverter.ToInt16(bytes, 3);
int j = 5;
DateTime time = DateTime.UtcNow;
Storage value = Storage.Empty;
for (int i = 0; i < count; i++)
{
short id = BitConverter.ToInt16(bytes, j);
j += 2;
ITag tag = GetItemByID(id);
if (tag != null)
{
DataType type = (DataType)bytes[j++];
switch (type)
{
case DataType.BOOL:
value.Boolean = BitConverter.ToBoolean(bytes, j++);
break;
case DataType.BYTE:
value.Byte = bytes[j++];
break;
case DataType.SHORT:
value.Int16 = BitConverter.ToInt16(bytes, j);
j += 2;
break;
case DataType.INT:
value.Int32 = BitConverter.ToInt32(bytes, j);
j += 4;
break;
case DataType.FLOAT:
value.Single = BitConverter.ToSingle(bytes, j);
j += 4;
break;
}
tag.Update(value, time, QUALITIES.QUALITY_GOOD);
}
else
{
byte type = bytes[j];
j += (type < 4 ? 2 : type < 6 ? 3 : 5);
}
}
//Array.Clear(bytes, 0, count);
}
}while (result > 0);
}