/// <summary>
/// 读取数据
/// </summary>
/// <returns>从设备读取的数据</returns>
public async Task <Dictionary <string, ReturnUnit> > GetDatasAsync(MachineGetDataType getDataType)
{
try
{
var ans = new Dictionary <string, ReturnUnit>();
//检测并连接设备
if (!BaseUtility.IsConnected)
{
await BaseUtility.ConnectAsync();
}
//如果无法连接，终止
if (!BaseUtility.IsConnected)
{
return(null);
}
//遍历每一个实际向设备获取数据的连续地址
foreach (var communicateAddress in CommunicateAddresses)
{
//获取数据
var datas =
await
BaseUtility.GetDatasAsync(
AddressFormater.FormatAddress(communicateAddress.Area, communicateAddress.Address,
communicateAddress.SubAddress),
(int)
Math.Ceiling(communicateAddress.GetCount *
BigEndianValueHelper.Instance.ByteLength[
communicateAddress.DataType.FullName]));
//如果没有数据，终止
if (datas == null || (datas.Length != 0 && datas.Length <
(int)
Math.Ceiling(communicateAddress.GetCount *
BigEndianValueHelper.Instance.ByteLength[
communicateAddress.DataType.FullName])))
{
return(null);
}
foreach (var address in communicateAddress.OriginalAddresses)
{
//字节坐标的位置
var localPos = AddressHelper.MapProtocalCoordinateToAbstractCoordinate(address.Address,
communicateAddress.Address,
AddressTranslator.GetAreaByteLength(communicateAddress.Area)) +
address.SubAddress * 0.125;
//字节坐标的主地址位置
var localMainPos = (int)localPos;
//字节坐标的子地址位置
var localSubPos = (int)((localPos - localMainPos) * 8);
//根据类型选择返回结果的键是通讯标识还是地址
string key;
switch (getDataType)
{
case MachineGetDataType.CommunicationTag:
{
key = address.CommunicationTag;
break;
}
case MachineGetDataType.Address:
{
key = AddressFormater.FormatAddress(address.Area, address.Address, address.SubAddress);
break;
}
case MachineGetDataType.Name:
{
key = address.Name;
break;
}
default:
{
key = address.CommunicationTag;
break;
}
}
//如果没有数据返回空
if (datas.Length == 0)
{
ans.Add(key, new ReturnUnit
{
PlcValue = null,
UnitExtend = address.UnitExtend
});
}
else
{
//将获取的数据和对应的通讯标识对应
ans.Add(key,
new ReturnUnit
{
PlcValue =
Convert.ToDouble(
ValueHelper.GetInstance(BaseUtility.Endian)
.GetValue(datas, ref localMainPos, ref localSubPos,
address.DataType)) * address.Zoom,
UnitExtend = address.UnitExtend
});
}
}
}
//如果不保持连接，断开连接
if (!KeepConnect)
{
BaseUtility.Disconnect();
}
//返回数据
if (ans.All(p => p.Value.PlcValue == null))
{
ans = null;
}
ErrorCount = 0;
return(ans);
}
catch (Exception e)
{
Console.WriteLine(ConnectionToken + " " + e.Message);
ErrorCount++;
if (ErrorCount >= _maxErrorCount)
{
Disconnect();
}
return(null);
}
}
public override IEnumerable <CommunicationUnit> Combine(IEnumerable <AddressUnit> addresses)
{
var continusAddresses = base.Combine(addresses).ToList();
var addressesGaps = new List <CommunicationUnitGap>();
CommunicationUnit preCommunicationUnit = null;
foreach (var continusAddress in continusAddresses)
{
if (preCommunicationUnit == null)
{
preCommunicationUnit = continusAddress;
continue;
}
if (continusAddress.Area == preCommunicationUnit.Area)
{
//计算间隔
var gap = new CommunicationUnitGap
{
EndUnit = continusAddress,
GapNumber =
(int)
Math.Ceiling(AddressHelper.MapProtocalCoordinateToAbstractCoordinate(
continusAddress.Address, preCommunicationUnit.Address,
AddressTranslator.GetAreaByteLength(continusAddress.Area)) -
preCommunicationUnit.GetCount *
BigEndianValueHelper.Instance.ByteLength[
preCommunicationUnit.DataType.FullName])
};
addressesGaps.Add(gap);
}
preCommunicationUnit = continusAddress;
}
//减去间隔
var orderedGaps = addressesGaps.OrderBy(p => p.GapNumber);
var jumpNumberInner = JumpNumber;
foreach (var orderedGap in orderedGaps)
{
jumpNumberInner -= orderedGap.GapNumber;
if (jumpNumberInner < 0)
{
break;
}
var nowAddress = orderedGap.EndUnit;
var index = continusAddresses.IndexOf(nowAddress);
index--;
var preAddress = continusAddresses[index];
continusAddresses.RemoveAt(index);
continusAddresses.RemoveAt(index);
//合并两个已有的地址段，变为一个新的地址段
var newAddress = new CommunicationUnit
{
Area = nowAddress.Area,
Address = preAddress.Address,
GetCount =
(int)
(preAddress.GetCount * BigEndianValueHelper.Instance.ByteLength[preAddress.DataType.FullName]) +
orderedGap.GapNumber +
(int)
(nowAddress.GetCount * BigEndianValueHelper.Instance.ByteLength[nowAddress.DataType.FullName]),
DataType = typeof(byte),
OriginalAddresses = preAddress.OriginalAddresses.ToList().Union(nowAddress.OriginalAddresses)
};
continusAddresses.Insert(index, newAddress);
}
return(continusAddresses);
}
