public object ReadItem(string address)
{
//lock (this)
//{
if (_dbAddress.ContainsKey(address))
{
ABLogixPLCAddress addr = _dbAddress[address];
if (addr.Type == "bool")
{
byte[] _buf = _dbAreaBuf[addr.ArrayName];
if (0 <= addr.BoolOffset && addr.BoolOffset < 8)
{
bool result = ((_buf[addr.index * 2] & (1 << addr.BoolOffset)) != 0);
return(result);
}
else if (8 <= addr.BoolOffset && addr.BoolOffset < 16)
{
bool result = ((_buf[addr.index * 2 + 1] & (1 << (addr.BoolOffset - 8))) != 0);
return(result);
}
//else if (16 <= addr.BoolOffset && addr.BoolOffset < 24)
//{
// bool result = ((_buf[addr.index * 4+2] & (1 << (addr.BoolOffset-16))) != 0);
// return result;
//}
//else if (24 <= addr.BoolOffset && addr.BoolOffset < 32)
//{
// bool result = ((_buf[addr.index * 4+3] & (1 << (addr.BoolOffset-24))) != 0);
// return result;
//}
else
{
throw new Exception("addr.BoolOffset大于15");
}
}
else if (addr.Type == "byte")
{
byte[] _buf = _dbAreaBuf[addr.ArrayName];
byte result = _buf[addr.index];
return(result);
}
else if (addr.Type == "int16")
{
byte[] _buf = _dbAreaBuf[addr.ArrayName];
byte _low_byte = _buf[addr.index * 2];
byte _high_byte = _buf[addr.index * 2 + 1];
Int16 result = (Int16)((_high_byte << 8) + _low_byte);
return(result);
}
else if (addr.Type == "int32")
{
int begin = addr.index * 4;
byte[] _buf = _dbAreaBuf[addr.ArrayName];
Int32 result = (Int32)((_buf[begin + 3] << 24) + (_buf[begin + 2] << 16) + (_buf[begin + 1] << 8) + _buf[begin]);
return(result);
}
else if (addr.Type == "string")
{
int tempstrlen = addr.StrLen + 4;
if (tempstrlen % 4 == 0)
{
}
else
{
tempstrlen = ((tempstrlen + 4) / 4) * 4;
}
int begin = addr.index * tempstrlen + 2; //String的字节数组,从索引2开始
byte[] _buf = _dbAreaBuf[addr.ArrayName];
//int strlen= (Int32)((_buf[begin] << 24) + (_buf[begin+1] << 16) + (_buf[begin+2] << 8) + _buf[begin+3]);
int strlen = (_buf[begin + 3] << 24) + (_buf[begin + 2] << 16) + (_buf[begin + 1] << 8) + _buf[begin];
string result = System.Text.Encoding.ASCII.GetString(_buf, begin + 4, strlen).Replace("\0", ""); //AB字符串前四个字节是实际长度
return(result); //= System.Text.RegularExpressions.Regex.Replace(result, @"[\u0001-\u001F]", ""); //过滤不可显示字符
}
else
{
throw new Exception("Tag类型不支持");
}
}
else
{
throw new Exception("读取Tag集合中未找到该地址");
}
return(null);
//}
}
private Dictionary <string, byte[]> _dbAreaBuf = new Dictionary <string, byte[]>(); //前一个数组名,后一个缓存区
public void AddAddress(Tag tag)
{
try
{
if (tag.AccessType == TagAccessType.Read || tag.AccessType == TagAccessType.ReadWrite)
{
string address = tag.Address;
ABLogixPLCAddress addr = ABLogixPLCAddress.ConvertAddress(address, tag.TagType);
_dbAddress.Add(address, addr);
if (addr != null)
{
Int16 len = (Int16)(addr.index + 1);
if (ReadAreaMaxLen.ContainsKey(addr.ArrayName))
{ //如果存在该DB ID
if (ReadAreaMaxLen[addr.ArrayName] < len)
{ //如果是最大地址
ReadAreaMaxLen[addr.ArrayName] = len;
if (addr.Type == "int32")
{
ReceiveByteMaxLen[addr.ArrayName] = (len * 4);
}
else if (addr.Type == "byte")
{
ReceiveByteMaxLen[addr.ArrayName] = (len);
}
else if (addr.Type == "int16" || addr.Type == "bool")
{
ReceiveByteMaxLen[addr.ArrayName] = (len * 2);
}
else if (addr.Type == "string")
{
int tempstrlen = addr.StrLen + 4;
if (tempstrlen % 4 == 0)
{
}
else
{
tempstrlen = ((tempstrlen + 4) / 4) * 4;
}
ReceiveByteMaxLen[addr.ArrayName] = (len * tempstrlen + 2);
}
else
{
throw new Exception("Tag类型不识别.");
}
}
}
else
{
ReadAreaMaxLen.Add(addr.ArrayName, len);
if (addr.Type == "int32")
{
ReceiveByteMaxLen.Add(addr.ArrayName, (len * 4));
}
else if (addr.Type == "byte")
{
ReceiveByteMaxLen.Add(addr.ArrayName, (len));
}
else if (addr.Type == "int16" || addr.Type == "bool")
{
ReceiveByteMaxLen.Add(addr.ArrayName, (len * 2));
}
else if (addr.Type == "string")
{
int tempstrlen = addr.StrLen + 4;
if (tempstrlen % 4 == 0)
{
}
else
{
tempstrlen = ((tempstrlen + 4) / 4) * 4;
}
ReceiveByteMaxLen.Add(addr.ArrayName, (len * tempstrlen + 2));
}
else
{
throw new Exception("Tag类型不识别.");
}
}
}
else
{
throw new Exception("ABLogixPLCAddress.ConvertAddress后的addr为null");
}
}
}
catch (Exception ex)
{
LOG.Error(string.Format("AB驱动添加地址{0}出错{1}", tag.Address, ex));
}
}
