Epson TM-U220-i Technical Reference Guide

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Hexadecimal Dumping Mode
In the hexadecimal dumping mode, the printer prints the data transmitted from a host computer in
hexadecimal numbers and their corresponding characters.
Starting Hexadecimal Dump Mode
Follow the steps below to run this mode.
Follow the steps below.
1
Open the roll paper cover.
2
While pressing the Feed button, turn on the printer. (Keep pressing the Feed
button until the Error LED is flashing.)
3
Close the roll paper cover.
After this, all the data received by the printer is printed in hexadecimal numbers and their cor-
responding ASCII characters.
Printing example:
4
Turn off the printer or press the Feed button three times to return to the
normal mode.
 If there is no character corresponding to print data, “.” is printed.
 If print data is less than one line, press the Feed button to print the line.
 Applications that confirm printer status may not work correctly during the hexadecimal dump-
ing mode. The printer returns only the status for “Transmit real-time status.”
Hexadecimal Dump
To terminate hexadecimal dump,
press FEED button three times.
1B 21 00 1B 26 02 40 40 1B 69 . ! . . & . @ @ . i
1B 25 01 1B 63 34 00 1B 30 31 . % . . c 4 . . 0 1
41 42 43 44 45 46 47 48 49 4A A B C D E F G H I J
*** completed ***

Epson TM-U220-i Specifications

General

Type	POS printer
Color	Yes
Print technology	Dot matrix
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Maximum roll diameter	83 mm
Standard interfaces	Ethernet, Parallel, RS-232, RS-485, USB, Wireless LAN
Serial interface type	RS-232, RS-485
Connectivity technology	Wired & Wireless
Electromagnetic compatibility	VCCI class A, FCC class A, CE marking, AS/NZS 3548 class B
Mean cycles between failures (MCBF)	18000000
Safety	UL, CSA, TÜV (EN60950)
Mean time between failures (MTBF)	180000 h
Product color	Gray

Weight and Dimensions

Depth	248 mm
Width	160 mm
Height	138.5 mm