Epson TM-T20 Quick Reference Guide

Miscellaneous Commands (continued)
ESC p m t1 t2
Outputs pulse to Drawer kick-out port.
m = 0, "0": connector pin 2, m = 1, "1": connector pin 5
t1: on time (×2ms), t2: off time (×2ms)
DLE DC4 1 m t fn=1 RT
Outputs pulse to Drawer kick-out port in real-time.
m = 0: connector pin 2, m = 1: connector pin 5
t = 1–8: On time / Off time (×100 ms)
GS ( H 6 0 48 48 d1 d2 d3 d4 fn=48
Transmits process ID specified by (d1, d2, d3, d4) after
execution of prior print or command.
d=32–126: visible character
Send data: 55 + 34 + d1 + d2 + d3 + d4 + NUL
GS I n Transmits printer ID or printer information.
n
information
send data
1, "1"
Printer model ID
99
2, "2"
Type ID
2: supported Multi-byte character
3: not supported
35
Column emulation
mode
"=#0"+NUL: normal mode
"=#1"+NUL: 42 column mode
65
Firmware version
95+strings+NUL
depends on firmware
66
Manufacturer
95+"EPSON"+NUL
67
Printer name
95+"TM-T20"+NUL
68
Serial number
95+Serial number (10 bytes)+NUL
69
Type of mounted
additional fonts
95+strings+NUL
depends on printers
ex.) "KANJI JAPANESE"
GS g 0 0 nL nH
Initialize resettable maintenance counter.
nL + nH×256
counter
unit
20
Number of lines fed
lines
21
Number of head energizations
times
22
Number of lines fed (after the print
head was replaced)
lines
50
Number of autocutter operations
times
70
Duration of printer operation
hours
GS g 2 0 nL nH
Transmits value of resettable or cumulative maintenance
counter.
counter unit
nL + nH×256
resettable
cumulative
Number of lines fed
lines
20
148
Number of head energizations
times
21
149
Number of lines fed (after the
print head was replaced)
lines 22 150
Number of autocutter operations
times
50
178
Duration of printer operation
hours
70
198
Send data: 95 + Value + NUL
Value: "0"–"9999999999" (1–10 bytes length)
GS ( K 2 0 50 m fn=50
Selects print speed.
m = 0, "0": speed customized by GS ( E (fn = 5, a = 6)
m = 1–13 (slow–fast)
Miscellaneous Commands (continued)
ESC ( A 3 0 97 n c fn=97
Sounds optional external buzzer.
n specifies the sound pattern. (n = 1–7)
c specifies the repeat times. (c = 0: infinitely)
DLE DC4 3 0 0 0 1 0 fn=3 RT
Stops sounding optional external buzzer and transmits 4
bytes: 55, 84, 64, 0.
DLE DC4 2 1 8 fn=2 RT
Executes printer power-off sequence and transmits 3
bytes: 59, 48, 0.
DLE DC4 8 1 3 20 1 6 2 8 fn=8 RT
Clears both receive and print buffers, and transmits 3
bytes: 55, 37, 0, as the Clear response.
Page Mode Commands
• Page mode is a free layout mode. Any print data can be put in any place on the
print area and be printed by FF or ESC FF command.
ESC L Switches from standard mode to page mode.
ESC S Switches from page mode to standard mode.
FF Prints all data and switches from page mode to standard
mode.
ESC FF Prints all data in page mode. After printing, the printer
does not clear the buffered data, the print position, and
values set by other commands.
ESC W xL xH yL yH dxL dxH dyL dyH
Sets the print area size and the logical origin in page
mode.
xL + xH×256, yL + yH×256: position of the logical origin
dxL + dxH×256: width of the print area
dyL + dyH×256: height of the print area
ESC T n Selects the print direction and the starting position in
page mode.
n print direction starting position
0, "0" left to right upper left
1, "1" bottom to top lower left
2, "2" right to left lower right
3, "3" top to bottom upper right
GS $ nL nH
In page mode, moves the vertical print position from the
starting position set by ESC T.
nL + nH×256: absolute print position
GS \ nL nH
In page mode, moves the vertical print position from the
current position.
nL + nH×256: relative print position (-32,768–32,767)
CAN Cancels print data in page mode.
Other Commands
• For details, refer to TM-T20 product specification or ESC/POS Application
Programming Guide for Paper Roll Printers.
• OC : obsolete command
Character Commands
ESC !
Selects character font and styles.
Miscellaneous Commands
GS P
Sets horizontal and vertical motion units.
GS ( A Executes test print.
Bit Image Commands
GS v 0 Prints raster bit image OC
NV Bit Image Commands
FS q Defines NV bit image in NV graphics area. OC
FS p Prints NV bit image defined by FS q. OC
Downloaded Bit Image Commands
GS ∗ Defines downloaded bit image. OC
GS / Prints downloaded bit image defined by GS ∗ OC
Status Commands
ESC u Transmits peripheral device status as 1 byte. OC
ESC v Transmits status of paper sensor as 1 byte. OC
Mechanism Control Commands
ESC i Executes paper cut. OC
ESC m Executes paper cut. OC
Customize Commands
FS g 1 Writes data to NV user memory. OC
FS g 2 Transmits data in NV user memory. OC
User Setup Commands
GS ( E
(fn=1) Enters User setting mode and transmits the mode
change notice.
GS ( E (fn=2) Ends User setting mode and performs software
reset.
GS ( E (fn=3) Sets memory switch setting values.
GS ( E (fn=4) Transmits memory switch setting values.
GS ( E (fn=5) Sets customized setting values.
GS ( E (fn=6) Transmits customized setting value.
GS ( E (fn=11) Sets configuration item for serial interface.
GS ( E (fn=12) Transmits configuration value.
GS ( E (fn=15) Selects configuration item: Class of USB interface.
GS ( E (fn=16) Transmits configuration value for Class of USB
interface.

Epson TM-T20 Specifications

General

Autocutter	Yes
Print Method	Line thermal
Paper Width	79.5 ±0.5 mm
Interface	USB, Ethernet
Dimensions	140‎ x 199 x 146 mm (Width x Depth x Height)
Power Supply	External power supply
Paper Thickness	0.06 - 0.085 mm