How to Send ZPL Commands to a Zebra GK420t Printer

In this tutorial, I will explain how to send ZPL commands to a Zebra GK420t printer to make it standalone, walk through the process of creating labels step by step.

What needed:
Zebra printer, in this case its the Zebra GK420t with COM port.
Zebra barcode scanner, Im using the Zebra DS46 series.

Part 1)  Setting up the printer

1. Connect the printer to the computer using an A-B cable.
2. Note: If the computer does not recognize the printer,  driver must be installed. Download here.
3. Connect the barcode scanner to the printer.
4. Go to the settings screen on your computer and click on Printers and Devices panel Settings > Printers & Scanners and select the ZDesigner GK420t printer.
   
5. Enter the Printing preferences option
   
6. In the opened panel, click on Tools
   
7. To load files to the printer, follow the table below
   

   Step number	Action
   1	Click on Action
   2	Select Send File
   3	Select FORMAT-E file
   4	Click on Send
   3	Choose Media-Power UP file
   4	Click on Send
   3	Choose Store Code DataMatrix 16 char file

   

8. Open the ________ file and scan the barcode using the barcode scanner.

9. Load a roll of stickers in the printer and press the button once to calibrate the printer for the type of sticker.

10. Scan with the barcode scanner to print a sticker.