通过PC串口向EPSON TM-U220型号打印机发送命令
0
悬赏园豆：20
[已关闭问题]
关闭于 2008-07-03 22:07
<P>各位:我想通过PC串口向EPSON TM-U220型号打印机发送命令，例如检查打印换行，但不知如何实现，哪位大侠知道还望给予指点，做好给个例子。十二分感谢！ <BR></P>
<P>一下是打印并换行的命令解释：</P>
<P>[Name] Print and line feed<BR>[Format] ASCII LF<BR>Hex 0A<BR>Decimal 10<BR>[Range] None<BR>[Default] None<BR>[Printers not featuring this command] None<BR>[Description] Prints the data in the print buffer and feeds one line, based on the current line spacing.<BR>[Notes] ■ The amount of paper fed per line is based on the value set using the line spacing command (ESC 2 or<BR>ESC 3).<BR>■ After printing, the print position moves to the beginning of the line. When a left margin is set in standard<BR>mode, the position of the left margin is the beginning of the line.<BR>■ When this command is processed in page mode, only the print position moves, and the printer does not<BR>perform actual printing.</P>
所有回答(1)
0
向串口写数最基本的代码如下
private bool _isStringMode=true;
SerialPort _comPort= new SerialPort();
private bool WriteToSerialPort(string strToSend)
{
try
{
_comPort.BaudRate = 19200;
_comPort.PortName = "COM1";
OpenSerialPort();
if (_isStringMode == false)
{
//二进制模式
byte[] buf = new byte[strToSend.Length];
for (int i = 0; i < strToSend.Length; i++)
{
buf[i] = (byte)strToSend[i];
}
_comPort.Write(buf, 0, strToSend.Length);
return true;
}
else
{
//文本模式
_comPort.Write(strToSend);
return true;
}
CloseSerialPort();
}
catch (Exception ex)
{
throw new Exception("写入串口异常", ex);
}
}
/// <summary>
/// 关闭串口
/// </summary>
private void CloseSerialPort()
{
if (_comPort != null)
{
if (_comPort.IsOpen == true)
{
_comPort.Close();
}
}
}
/// <summary>
/// 打开串口
/// </summary>
private void OpenSerialPort()
{
if (_comPort != null)
{
if (_comPort.IsOpen == false)
{
_comPort.Open();
}
}
}
