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Re: ZebraPrinter.getCurrentStatus taking 9-10 seconds to return.
Robin West
Sep 24, 2018 12:14 PM
Hi Steven, We don't think we're aware of this issue, so can you share some details?
What OS? Driver (version?) or direct USB? What platform (Android/Windows Java/Windows C#/etc.)? What version of the library? What firmware version?
Thanks,
Robin
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Re: ZebraPrinter.getCurrentStatus taking 9-10 seconds to return.
I'm having the same issue with my ZT230 - USB connection with ZDesigner ZT230-300dpi ZPL driver. Printer Configuration print out shows:
Firmware ZSP-003757A
Link-OS Version 2.0
I'm using VisualStudio 2015/VB.Net with most current SDK on Windows Windows 10 Pro (64-bit). Here's my code for getting the status:
Try
connection = ConnectionBuilder.Build(_currentUsbPrinterName)
connection.Open()
printer = ZebraPrinterFactory.GetInstance(PrinterLanguage.ZPL, connection)
pStatus = printer.GetCurrentStatus **** TAKES 11 go 12 seconds to return
If pStatus.isReadyToPrint Then
lblMessage.Text = "Ready to Print"
Threading.Thread.Sleep(1500)
ElseIf pStatus.isPaused Then
lblMessage.Text = "Printer is Paused"
Threading.Thread.Sleep(1500)
Else
lblMessage.Text = "Other print status"
Threading.Thread.Sleep(1500)
End If
Catch ex As Exception
MsgBox(ex.Message)
Finally
If connection IsNot Nothing Then
connection.Close()
connection.Dispose()
End If
End Try
This on the other hand prints instantaneously:
Try
' Open the connection - physical connection is established here.
connection = ConnectionBuilder.Build(_currentUsbPrinterName)
connection.Open()
' This example prints "This is a ZPL test." near the top of the label.
Dim zplData As [String] = "^XA^FO20,20^A0N,25,25^FDThis is a ZPL test.^FS^XZ"
' Send the data to printer as a byte array.
connection.Write(Encoding.[Default].GetBytes(zplData))
Catch ex As Exception
' Handle communications error here.
MsgBox(ex.Message)
Finally
If connection IsNot Nothing Then
connection.Close()
connection.Dispose()
End If
End Try
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Re: ZebraPrinter.getCurrentStatus taking 9-10 seconds to return.
I tried a new approach based on another posting I found - see below. This works great - instantaneous response however, if I run this code a second time, the call to ConnectionBuilder.Build hangs up and never returns.
Private Sub btnGetPrinterStatus2_Click(sender As Object, e As EventArgs) Handles btnGetPrinterStatus2.Click
Dim connection As DriverPrinterConnection = Nothing
Dim byteArray As Byte()
Dim result As List(Of String)
Try
connection = ConnectionBuilder.Build(_currentUsbPrinterName) *** Hangs up if I run this code again
connection.Open()
Dim getstatus As String = "~HQES"
byteArray = Encoding.ASCII.GetBytes(getstatus)
Dim response As Byte() = New Byte(149) {}
connection.Write(byteArray)
connection.WaitForData(3000)
response = connection.Read()
result = ParseResponse(response)
If result.Count > 0 Then
lblMessage.Text = result.Item(0)
Else
lblMessage.Text = "No result returned."
End If
Catch ex As Exception
MsgBox(ex.Message)
Finally
If connection IsNot Nothing Then
connection.Close()
connection.Dispose()
End If
End Try
End Sub