protected string ReadString(TCustomTKDevice device, ArrayCharOfTag tag)
{
byte[] buffer = new byte[tag.Length];
int resNo =
CS7TcpClient.ReadString(
plcHandle,
(int)tag.DB_Type,
device.DBNumber,
tag.DB_Offset,
(short)tag.Length,
buffer);
return(Encoding.Default.GetString(buffer));
}
public void AddDevice(TCustomTKDevice device)
{
device.OnWriteback += new S7WriteBackHandler(WritebackToPLC);
devices.Add(device);
}
/// <summary>
/// 回写到 PLC 中
/// </summary>
private void WritebackToPLC(TCustomTKDevice device, CustomTagTest tag)
{
if (tag is BoolOfTag)
{
BoolOfTag ltag = tag as BoolOfTag;
CS7TcpClient.WriteBool(
plcHandle,
0x84,
device.DBNumber,
ltag.DB_Offset,
ltag.Position,
Convert.ToUInt16(ltag.Value));
}
else if (tag is ByteOfTag)
{
ByteOfTag ltag = tag as ByteOfTag;
CS7TcpClient.WriteByte(
plcHandle,
0x84,
device.DBNumber,
ltag.DB_Offset,
ltag.Value);
}
else if (tag is WordOfTag)
{
WordOfTag ltag = tag as WordOfTag;
CS7TcpClient.WriteWord(
plcHandle,
0x84,
device.DBNumber,
ltag.DB_Offset,
(uint)ltag.Value);
}
else if (tag is DWordOfTag)
{
DWordOfTag ltag = tag as DWordOfTag;
CS7TcpClient.WriteDWord(
plcHandle,
0x84,
device.DBNumber,
ltag.DB_Offset,
(uint)ltag.Value);
}
else if (tag is ArrayCharOfTag)
{
ArrayCharOfTag ltag = tag as ArrayCharOfTag;
string temp = ltag.Value.PadRight(ltag.Length, ' ').Substring(0, ltag.Length);
CS7TcpClient.WriteBlockAsByte(
plcHandle,
0x84,
device.DBNumber,
ltag.DB_Offset,
ltag.Length,
Encoding.Default.GetBytes(temp));
}
}