不能声称PosPrinter

Question

我有一个TM-T20爱普生，我用这段代码试图打印："Hello“消息，我一直在跟踪PosPrinter的一些礼仪：

public void ImprintHelloPrinter()
        {
            //The Explorer
            PosExplorer explorer = new PosExplorer();

            ////Get the device by its type LOGICAL NAME
            DeviceInfo device = explorer.GetDevice(DeviceType.PosPrinter, "T20PRINTER");

            //Create an instance
            PosPrinter oposPrinter = (PosPrinter)explorer.CreateInstance(device);

            //Opening 
            MessageBox.Show(@"Statue : " + oposPrinter.State.ToString());
            oposPrinter.Open();
            MessageBox.Show(@"Statue : " + oposPrinter.State.ToString());

            //Checking if its really the printer
            MessageBox.Show(@"Description : " + oposPrinter.DeviceDescription);


            MessageBox.Show(@"Check Claimed : " + oposPrinter.Claimed.ToString());
            oposPrinter.Claim(10000); //Here is My Exception 

            //Enabeling device
            oposPrinter.DeviceEnabled = true;

            //normal print
            oposPrinter.PrintNormal(PrinterStation.Receipt, "Hello Printer");
        }

一切都进行得很好，我检查了它是否是正确的打印机，并且打开了它，但当我试图声明它时，我有以下例外：

Method ClaimDevice threw an exception.  Attempt was made to perform an illegal 

or unsupported operation with the device, or an invalid parameter value was used.

即使在示例应用程序 (C:\Program \\SDK\Sample\Sample应用程序)文件夹(C：\Program\Microsoft\SDK\Samples)中提供的Microsoft 中，我也可以找到打印机，打开它，但是当我声明它时，我收到了以下错误消息：

POSControlException ErrorCode(Illegal) ExtendedErrorCode(10002) occurred:
Method ClaimDevice threw an exception.  Attempt was made to perform an illegal
 or unsupported operation with the device, or an invalid parameter value was 
used.

示例应用程序的打印屏幕:

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Answer 1

这个错误是因为您的端口配置不好。

在我的例子中，我使用了连接到硬件NPort 5110的FP-81 II模型，在那里我将端口配置为9100。

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我希望能帮你。