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Zebra Technologies GC420t manual Serial Communications, Autobaud

Models: GC420t

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Connecting your Printer to a Computer

Serial Communications

The printer has a DCE serial communication port for hardware compatibility with legacy 888 printers. The required cable must have a nine-pin “D” type (DB-9P) male connector on one end which plugs into the mating (DB-9S) serial port located on the back of the printer. The other end of this signal interface cable connects to a serial port on the host computer. The cable is a Null-Modem (cross-over signal connections) cable. For pinout information, refer to Appendix A.

The serial port communication settings between the printer and host (typically a PC) must match for reliable communication. The Bits per second (or Baud rate) and Flow control are the most common settings that get changed. The host (typically a Windows PC) needs to have the data Flow control changed to match the printer’s default communication method: Hardware and is noted by the Host Handshake setting DTR/Xon/Xoff. This combined hardware (DTR) and software (Xon/Xoff) mode may need to change depending upon use with non- Zebra application software or the serial cable variation in use.

Serial communications between the printer and the host computer can be set by:

•Autobaud synchronization

•ZPL programming ^SC command

•EPL programming Y command

•Resetting the printer to its default printer configuration.

Autobaud

Autobaud synchronization allows the printer to automatically match the communication parameters of the host computer. To autobaud:

1.Press and hold the feed button until the green status LED flashes once, twice, and then three times.

2.While the status LED flashes, send the ^XA^XZ command sequence to the printer.

3.When the printer and host are synchronized, the LED changes to solid green. (No labels will print during autobaud synchronization.)

ZPL ^SC Command

Use the Set Communications (^SC) command to change the communications settings on the printer.

1.With the host computer set at the same communications settings as the printer, send the ^SC command to change the printer to the desired settings.

2.Change the host computer settings to match the new printer settings.

Refer to the ZPL Programming Guide for more information about this command.

P1052686-001

GC420t™ User Guide

5/22/2012

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Zebra Technologies GC420t manual Serial Communications, Autobaud
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GC420t specifications

Zebra Technologies GC420t is a compact and versatile thermal transfer printer designed for a variety of printing applications. This printer is particularly favored in retail, healthcare, manufacturing, and logistics due to its robust performance and user-friendly features.

One of the standout characteristics of the GC420t is its print speed. This printer can achieve speeds of up to 5 inches per second, making it efficient for high-volume printing tasks. With a maximum print resolution of 203 dpi, the GC420t produces clear and legible labels, receipts, and tags, which is essential in environments where accurate information is critical.

The GC420t utilizes thermal transfer technology, which involves the use of a ribbon to transfer ink onto the substrate. This method is particularly beneficial for producing high-quality prints that are resistant to smudging, scratching, and fading. This durability makes it suitable for labeling products that require a long-lasting solution.

In addition to its printing capabilities, the GC420t features a user-friendly design. The printer's simple setup and intuitive control panel make it easy for users to operate without the need for extensive training. The included ZPL II and EPL programming languages enable seamless integration into existing systems, further enhancing the ease of use.

The GC420t is also equipped with diverse connectivity options, including USB, serial, and parallel interfaces. This flexibility allows for easy integration into various environments and simplifies the connection to computers and other devices. Moreover, the printer's compact design ensures it can fit comfortably in small spaces, making it ideal for environments with limited room.

When it comes to media handling, the GC420t supports a wide range of label sizes and types. Whether you need to print shipping labels, barcode labels, or asset tags, this printer can accommodate your requirements. The adjustable media guides allow for quick and easy adjustments to suit different media types.

In conclusion, Zebra Technologies GC420t stands out as a reliable, efficient, and user-friendly thermal transfer printer. Its robust features, including high print speed, durable output, versatile connectivity options, and adaptability to various media types, make it an essential tool for businesses looking to enhance their labeling and printing processes. Whether in retail, healthcare, or logistics, the GC420t delivers performance and reliability that organizations require.