private void btn_write_Click(object sender, EventArgs e)
{
try
{
if (_plc == null)
{
lbMsg.Text = "请先连接";
return;
}
if (string.IsNullOrEmpty(cb_addr.Text))
{
lbMsg.Text = "请输入地址";
return;
}
if (string.IsNullOrEmpty(txt_val.Text))
{
lbMsg.Text = "请输入数据";
return;
}
lbMsg.Text = "写入中";
List <DataItem> dataItems = new List <DataItem>();
var item = DataItem.FromAddressAndValue(cb_addr.Text, txt_val.Text);
dataItems.Add(item);
_plc.Open();
_plc.Write(dataItems.ToArray());
_plc.Close();
lbMsg.Text = "写入成功";
}
catch (PlcException ex)
{
lbMsg.Text = ex.Message;
}
}