Epson Point of Sale Printer - Unable to print using c#

Question

I have an Epson TM-U220A, I am writing and c# desktop application to print receipt. But it is unable to find the printer.

The printer prints strange characters if i send something via notepad (thus its working)

I have the following:

• POS for .Net v1.12.exe
• OPOSN1.11.16 (Espon Wrapper for .net)
• Espon driver installed
• USB interface to the printer.

Code:

private void FormLoad(object sender, System.EventArgs e)
        {

            //<<<step1>>>--Start
            //Use a Logical Device Name which has been set on the SetupPOS.
            string strLogicalName = "PosPrinter";
           // string strLogicalName = "ESDPRT001";

            try
            {
                //Create PosExplorer
                PosExplorer posExplorer = new PosExplorer();

                DeviceInfo deviceInfo = null;

                try
                {
                    deviceInfo = posExplorer.GetDevice(DeviceType.PosPrinter, strLogicalName);
                    m_Printer = (PosPrinter)posExplorer.CreateInstance(deviceInfo);
                }
                catch (Exception)
                {
                    ChangeButtonStatus();
                    return;
                }

                //Open the device
                m_Printer.Open();

                //Get the exclusive control right for the opened device.
                //Then the device is disable from other application.
                m_Printer.Claim(1000);

                //Enable the device.
                m_Printer.DeviceEnabled = true;
            }
            catch (PosControlException)
            {
                ChangeButtonStatus();
            }
            //<<<step1>>>--End

        }

Error: The port name is illegal, or couldn't be connected to the device. On line: m_Printer.Claim(1000);

Numberless

Do you know what line the exception is thrown at? – Frangipane

Error: The port name is illegal, or couldn't be connected to the device. On line: m_Printer.Claim(1000); – Numberless

which drfiver are you using opos or windows driver? – Delastre

Answer 1

In my experience working with Epson POS printers having the Windows printer driver installed prevents using the printer in any other way.

I think the first thing you should try is deleting the printer, set it up again in SetupPOS, and try your program again.

Good luck!

Emphysema

this works as is ... not sure why this would've been the issue. – Smalltime

Answer 2

please Check the configuration.xml file. Port NAme must be same as in xml And SetupPOS that should be in serial Port.

For xml configuration Please check this link http://social.msdn.microsoft.com/Forums/en-US/5baad480-f2be-4cc9-94e0-572a3fa4697a/sharing-information-for-posnet-112-epson-tmt88v?forum=posfordotnet

Sectional

Answer 3

Did you open up the printer ports for the printer? That could be the problem..

We need the following ports open and enabled for the printer:

9100 to 9100 with Protocol set to "Both" 81 to 1800 with Protocol set to "Both"

Preferable