private void button_setLengthCheck_Click(object sender, EventArgs e)
{
if (checkBox_setL.Checked == true)
{
serialPort1.WriteLine(textBox_setLcustom.Text + "Y");
SetText(textBox_setLcustom.Text + "Y" + "\r\n");
}
else
{
serialPort1.WriteLine(textBox_setLcustom.Text + "N");
SetText(textBox_setLcustom.Text + "N" + "\r\n");
}
}