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Technical Reference Guide Product Overview Describes features and general specifications for the product. Setup Describes setup and installation of the product and peripherals. Application Development Information Describes how to control the printer and necessary information when you develop applications. Handling Describes how to handle the product.
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• Neither is any liability assumed for damages resulting from the use of the information contained herein. • Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third parties for damages, losses, costs, or expenses incurred by the purchaser or third parties as a result of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product, or (excluding the U.S.) failure to strictly comply with Seiko Epson Corporation’s operating...
For Safety Key to Symbols The symbols in this manual are identified by their level of importance, as defined below. Read the following carefully before handling the product. You must follow warnings carefully to avoid serious bodily injury. WARNING Provides information that must be observed to prevent damage to the equipment or loss of data.
• Shut down your equipment immediately if it produces smoke, a strange odor, or unusual noise. Continued use may lead to fire. Immediately unplug the equipment and contact your dealer or a Seiko Epson service center for advice. • Never attempt to repair this product yourself. Improper repair work can be dangerous.
Cautions • Do not connect cables in ways other than those mentioned in this manual. Different connections may cause equipment damage or fire. • Be sure to set this equipment on a firm, stable, horizontal surface. CAUTION The product may break or cause injury if it falls. •...
About this Manual Aim of the Manual This manual was created to provide information on development, design, and installation of POS systems and development and design of printer applications for developers. Manual Content The manual is made up of the following sections: Chapter 1 Product Overview Chapter 2...
Contents ■ For Safety..........................3 Key to Symbols ............................3 Warnings ..............................4 Cautions..............................5 ■ Restriction of Use ........................5 ■ About this Manual ........................6 Aim of the Manual..........................6 Manual Content ............................ 6 Product Overview ................11 ■ Features ..........................11 ■ Product Configurations ......................13 Interface ...............................
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Setup .....................31 ■ Flow of Setup........................31 ■ Installing the Printer......................32 Installing the Printer Vertically ......................33 Hanging the Printer on a Wall ......................34 ■ Changing the Paper Width....................36 ■ Connecting the Printer to the Host Computer ..............37 For Serial Interface Model ........................37 For USB Interface Model ........................39 For Ethernet Interface ..........................40...
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■ Removing Jammed Paper....................77 When the Roll Paper Cover Cannot be Opened ................77 ■ Cleaning the Printer......................79 Cleaning the Printer Case ........................79 Cleaning the Thermal Head/Platen Roller..................79 ■ Preparing for Transport .......................80 Appendix..................81 ■ Specifications of Interface and Connector ..............81 USB (Universal Serial Bus) Interface ....................
• Multiple languages are supported for code pages, Windows drivers, and utility software. Interface • USB, serial, and Ethernet interfaces are available. • USB/Ethernet virtual serial interface and USB/Ethernet virtual parallel interface are supported. Environmental • The TM-T20 is ENERGY STAR qualified.
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Others • Various installation layouts (horizontal, vertical, and wall-hanging installation) are selectable. • Software & Documents Disc is included containing drivers, utility software, and manuals. • Optional buzzer unit is available.
• Control panel label for vertical installation • 58-mm width paper guide plate • Interface cable • AC cable • TM-T20 Software & Documents Disc containing drivers, utilities, and documentation • Setup Guide • Warranty certificate* * May not be included depending on the model.
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Options • Affixing tape for fixing the printer (Model: DF-10) • External buzzer unit (Model: OT-BZ20)
Guide. 2 Power Switch Cover Install the power switch cover that comes with the TM-T20 onto the printer to prevent inadvertent operation of the power switch and to prevent tampering. To reset the printer when the power switch cover is installed, insert a long, thin object (such as the end of a paper clip) into the hole in the power switch cover and press the power switch.
3 Control Panel (Power) LED ( Error LED ( Paper LED ( Feed button ( When installing the printer vertically or hanging the printer on a wall, be sure to attach the included control panel label for vertical installation on the roll paper cover. The control panel label for vertical installation is upside down.
Chapter 1 Product Overview Offline The printer automatically goes offline under the following conditions: • During power on until the printer is ready • During the self-test • While roll paper is fed using the Feed button • When the printer stops printing due to a paper-end (if an empty paper supply is detected by the roll paper end sensor) •...
Error Status There are three possible error types: automatically recoverable errors, recoverable errors, and unrecoverable errors. Automatically Recoverable Errors Printing is no longer possible when automatically recoverable errors occur. They can be recovered easily, as described below. Error Error description Error LED flashing pattern Recovery measure Roll paper...
Chapter 1 Product Overview Unrecoverable Errors Printing is no longer possible when unrecoverable errors occur. The printer must be repaired. Turn off the power immediately when an unrecoverable error occurs. CAUTION Error Error description Error LED flashing pattern Memory R/W error After R/W checking, the printer LED ON does not work correctly.
Use the TM-T20 Utility to register graphics. You can also use the TM-T20 Utility or the NV graphics information print mode to print and confirm the registered graphics.
NV memory. You can read the information with the Status API of the APD or OPOS ADK to use it for periodical checks or part replacement. You can also check the head running length and number of times of autocutting with the self-test (see "Self-test Mode" on page 66.) and the TM-T20 Utility.
Product Specifications Printing method Thermal line printing Printing direction Unidirectional with friction feed Paper feed speed Approx. 150 mm/s {approx. 5.91"/s} (continuous paper feeding with the Feed button) Cutting method Partial cut (cutting with one point in left edge left uncut) Interface USB [USB 2.0, Full-speed (12 Mbps)], Serial (RS-232), Ethernet (10BASE-T/100BASE-TX)
Chapter 1 Product Overview Printing Specifications 80 mm width paper 58 mm width paper setting setting Printing method Thermal line printing Dot density 203 × 203 dpi Paper Normal mode (initial setting) 72.1 mm (2.84"), 576 dots 52.6 mm (2.07"), 420 dots width 42 column mode 68.3 mm (2.69"), 546 dots...
Character Specifications 80 mm width 58 mm width paper setting paper setting Number of characters Alphanumeric characters: 95 Extended graphics: 128 × 43 pages (including user-defined page) International characters: 18 sets Character structure Normal Font A 12 × 24 (including 2-dot horizontal spacing) mode (initial Font B 9 ×...
Chapter 1 Product Overview Paper Specifications 80 mm width paper setting 58 mm width paper setting Paper types Specified thermal paper Form Roll paper Size Roll paper diameter 83 mm {3.27"} maximum Roll paper spool Inside: 12 mm {0.47"}, Outside: 18 mm {0.71"} Roll width when taken up 80 + 0.5/-1.0 mm 58 + 0.5/-1.0 mm...
Printable Area 80 mm paper width setting The maximum printable area of paper with a width of 79.5 ± 0.5 mm {3.13 ± 0.02"} is 72.1 ± 0.2 mm {2.84 ± 0.008"} (576 dots) and the approximate space is 3.0 mm {0.12"} on the left side on the left side and 4.5 mm {0.18"} on the right side.
Chapter 1 Product Overview Printing and Cutting Positions Manual-cutter position Approx. 27.1 Approx. 10.5 Autocutter blade position Center of the print dotline Paper feed direction [units: mm (All the numeric values are typical.)] The values above may vary slightly as a result of paper slack or variations in the paper. Take this into account when setting the cutting position of the autocutter.
Electrical Characteristics Supply voltage AC 100-240V 50/60 Hz Rated current 1.0 A Note on printing with a high print ratio If printing is continuously performed with a high print ratio, the overcurrent protection may be activated and result in uneven print density or a low voltage error. Therefore, the printing length must not exceed the following values when printing with high print ratio.
Ambient temperature Acoustic noise (operating) Approximately 55 dB (bystander position) Note: The values above are measured in the Epson evaluation condition. Acoustic noise differs depending on the paper used, printing contents, and the setting values, such as print speed or print...
External Dimensions and Mass • Height: Approximately 146 mm {5.75"} • Width: Approximately 140 mm {5.51"} • Depth: Approximately 199 mm {7.83"} • Mass: Approximately 1.7 kg {3.74 lb} (except for roll paper) [Units: mm]...
Chapter 2 Setup Setup This chapter describes setup and installation of the product and peripherals. Flow of Setup This chapter consists of the following sections along with the setup flow of the product and peripherals. Installing the Printer (page 32) Changing the Paper Width (page 36) Connecting the Printer to the Host Computer (page 37) Connecting to the Power Source (page 42)
Installing the Printer You can install the printer horizontally on a flat surface (with the paper exit on top) or vertically (with the paper exit at the front). Also, you can hang it on a wall using the included accessories. Horizontal installation Vertical installation Hanging on a wall...
Chapter 2 Setup Installing the Printer Vertically When installing the printer vertically, be sure to attach the included control panel label for vertical installation on the roll paper cover, and attach 4 rubber feet in the rectangular indents in the printer case, as shown in the illustration below. Control panel label for vertical installation Rubber feet...
Hanging the Printer on a Wall To hang the printer on the wall, follow the steps below. • To fix the printer securely, install the wall hanging bracket on a wall made of wood, concrete, or metal. The thickness of the wall should be 10 mm {0.4"} or more. •...
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Chapter 2 Setup Remove the installed 2 screws from the printer, install the wall hanging bracket on the printer, and fix it using the screws. Screws Wall hanging bracket Align the holes in the wall hanging bracket with the screws on the wall, and hook it securely.
Changing the Paper Width You can change the paper width from 80 to 58 mm by installing the included 58-mm width paper guide plate. Follow the steps below to change the paper width. • Because some parts of the print head and the autocutter contact the platen and they may become worn out, once you change the paper width from 80 to 58 mm and use the printer, you cannot change it back to 80 mm.
DM-D AC cable Serial cable Modular cable Serial cable Cash drawer TM-T20 Pass-through connection This printer is connected to the host computer through the serial interface via the customer display (DM-D). Power supply unit + AC cable AC cable Modular cable...
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Connecting the serial interface (RS-232) cable Be sure to turn off the power supply for both the printer and host computer before connecting the cables. WARNING Insert the serial cable connector firmly into the interface connector. When using connectors equipped with screws, tighten them to secure the connectors firmly.
DM-D AC cable Serial cable Modular cable USB cable Cash drawer TM-T20 Connecting the USB interface cable Connect the USB cable to the USB upstream connector. USB cable Connect the other end of the USB cable to the host computer.
Connect the printer to a network by a LAN cable via a hub. Ethernet interface connection diagram The modular cable is amounted on the cash drawer. AC cable Power supply unit + AC cable TM-T20 Modular Serial cable cable DM-D Cash drawer...
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10/100BASE-T LAN connector. To use the Ethernet interface, the IP Address Setup Utility for UB-E03 is required. For detailed information about the setup methods, see “Setting IP Address Using EPSON TMNet WinConfig“, “Setting IP Address Using arp/ping Command“, “Checking/Changing the Settings“, “Initializing“, and “ESPON TMNet WebConfig”...
Connecting to the Power Source • Never insert the AC cable plug into a socket that does not meet the rated voltage requirements of the printer. Doing so may result in damage to the printer. WARNING • Should a fault ever occur, immediately turn off the power to the printer and unplug the AC cable from the wall socket.
For an outline of the functions, see the following section. Use the methods shown in the table below; TM-T20 Utility, Memory Switch Setting Mode, or ESC/POS commands, to set the memory switches and R/E functions.
Functions Receive buffer capacity • 4KB (initial setting) • 45 bytes BUSY condition • Receive buffer full/Offline (initial setting) • Receive buffer full • In either case above, the printer enters the BUSY state after power is turned on, and when a self-test is being run.
Chapter 2 Setup Release condition of receive buffer BUSY • Releases when the remaining receive buffer capacity becomes 256 bytes (initial setting) • Releases when the remaining receive buffer capacity becomes 138 bytes Roll paper width • 80 mm (initial setting) •...
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Character code table default Selectable from 43 pages including user defined page Initial setting: Page 0 (PC437: USA, Standard Europe) For the character code table, see "Character Code Tables" on page International character default Selectable from 18 sets Initial setting: USA For the character code table, see "International Character Sets"...
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Chapter 2 Setup Optional buzzer • For information about how to connect the optional buzzer, see "Connecting the Optional Buzzer Unit" on page • When the optional buzzer is set to "Enabled," a cash drawer cannot be used. Be sure to set it to “Disabled“...
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Communication condition of serial interface Transmission speed • 2400 bps • 4800 bps • 9600 bps • 19200 bps • 38400 bps (initial setting) • 57600 bps • 115200 bps [bps: bits per second] Parity • None (initial setting) • Even •...
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Chapter 2 Setup Alignment • Left • Center • Right Auto bottom logo Key-code Selectable from key-codes of registered logos Alignment • Left • Center • Right Top logo when printer is powered on • Enables • Disables (initial setting) Top logo when cover is closed •...
Connecting the Optional Buzzer Unit When the optional buzzer unit (model: OT-BZ20) is connected to the drawer kick-out connector of the printer, you can set the printer so that it beeps when you send commands, when an error occurs, and when the printer does specific operations such as autocutting. Settings for sound patterns and frequency depending on the occasions the buzzer beeps are also available.
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Chapter 2 Setup Turn off the printer. Clean and dry the printer case where the buzzer unit will be installed. With 2 included pieces of the affixing tape combined, peel off the backing paper on one side, and stick the tape in the center of the attaching surface of the buzzer unit.
Connecting the Cash Drawer Use a cash drawer handled by EPSON or your dealer. • Do not connect both the optional external buzzer and the cash drawer to the printer at the same time by using a branched connector. • When the optional buzzer is set to "Enabled" with the memory switch (see "Setting the...
Chapter 3 Application Development Information Application Development Information This chapter describes how to control the printer and gives information useful for printer application development. How to Control the Printer Use a driver or ESC/POS commands to control the printer. Selecting a Driver Choose one of the drivers listed in "Printer Drivers"...
ESC/POS Commands ESC/POS is the Epson original printer command system. With ESC/POS commands, you can directly control all the TM printer functions, but detailed knowledge of printer specifications or combination of commands is required, compared to using a driver. To use ESC/POS commands, you need to agree to a nondisclosure contract first and obtain the ESC/POS Application Programming Guide.
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Chapter 3 Application Development Information Turn 90° clockwise rotation mode on/off Select character size Turn smoothing mode on/off Turn upside-down print mode on/off Turn white/black reverse print mode on/off Select/cancel user-defined character set Define user-defined characters Cancel user-defined characters Cancel print data in page mode Commands for panel buttons Enable/disable panel buttons Commands for print positions...
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Delete the specified NV graphics data Define the NV graphics data (raster format) Print the specified NV graphics data Transmit the key code list for defined downloaded graphics Delete all downloaded graphics data Delete the specified downloaded graphics data Define the downloaded graphics data (raster format) Print the specified downloaded graphics data Store the graphics data in the print buffer (raster format) Select bit-image mode...
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Chapter 3 Application Development Information PDF417: Select the options PDF417: Store the data in the symbol storage area PDF417: Print the symbol data in the symbol storage area PDF417: Transmit the size information of the symbol data in the symbol storage area QR Code: Select the model QR Code: Set the size of module QR Code: Select the error correction level...
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End the user setting mode session Set values for the memory switch Transmit the setting of the memory switch Set the customized setting values Transmit the customized setting values Set conditions for USB interface communication Transmit conditions for USB interface communication Set conditions for serial interface communication Transmit conditions for serial interface communication Write to NV user memory...
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Chapter 3 Application Development Information Initialize maintenance counter Transmit maintenance counter Commands for receipt enhancement Cancel set values for top/bottom logo printing Transmit set values for top/bottom logo printing Set top logo printing Set bottom logo printing Make extended settings for top/bottom logo printing Enable/disable top/bottom logo printing...
POS, such as controls for paper cut, a cash drawer, and customer display. The • Status API Manual Status API (Epson original DLL) that monitors printer • Devmode API/PRINTERINFO Manual status and sends ESC/POS commands is also •...
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Windows drivers. It is not a driver to be used for printing from commercial applications. *2: This guide describes general information on how to control printers using the OPOS ADK (in the chapter “POS Printer” and “Appendix-A”). It does not describe Epson’s specific functions.
TM/BA/EU Printer Remote Configuration Tool User’s Manual This is a package of EpsonNet Simple Viewer and TM-T20 Utility. First install this software in the computer with the administrator's authority, and set up the firewall. Next, install the printer driver in each client computer and set up the firewall.
Chapter 3 Application Development Information How to Get Drivers, Manuals, and the Utility Drivers, manuals, and the TM-T20 Utility can be installed by the TM-T20 installer in the included TM-T20 Software & Documents Disc. You can also obtain them from one of the following URLs.
Setting/Checking Modes Besides the ordinary print mode, the printer has the following modes to set or check settings of the printer. • Self-test Mode • Hexadecimal Dumping Mode (page • NV Graphics Information Print Mode (page • Receipt Enhancement Information Print Mode (page •...
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Chapter 3 Application Development Information When the printer finishes printing the printer status, the following message is printed and the Paper LED flashes. (The printer is now in the self-test wait mode.): “Select Modes by pressing Feed button. Continue SELF-TEST: Less than 1 second Mode Selection: 1 second or more”...
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. It enables you to check if data is transmitted to the printer correctly. Starting the hexadecimal dumping mode Follow the steps below to run this mode.
Chapter 3 Application Development Information NV Graphics Information Print Mode You can confirm the following information by running the NV graphics information print mode: • Capacity of the NV graphics • Used capacity of the NV graphics • Unused capacity of the NV graphics •...
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Then press the Feed button. (Keep pressing the Feed button until the printer starts printing.) The printer starts printing the NV graphics information. Turn the power off and on to return to the normal mode.
Chapter 3 Application Development Information Receipt Enhancement Information Print Mode You can confirm the following information by running the R/E information mode: • Automatic top logo setting • Automatic bottom logo setting • Extended settings for automatic top/bottom logo Starting the R/E information print mode Follow the steps below to run this mode.
Memory Switch Setting Mode In the memory switch setting mode, you can set the following memory switches. • Receive buffer capacity • BUSY condition • Processing when data receive error • Auto line feed • USB power-saving function • Release condition of receive buffer BUSY •...
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Chapter 3 Application Development Information Then press the Feed button. (Keep pressing the Feed button until the printer starts printing.) The printer starts printing instructions for settings. Follow the instructions. After one setting has been completed, the printer stores the setting and then starts initializ- ing.
Chapter 4 Handling Handling This chapter describes basic handling of the printer. Installing and Replacing Roll Paper • Do not open the roll paper cover during printing or autocutting. The printer may be damaged. • Do not touch the manual cutter with your hands when installing or replacing the CAUTION roll paper.
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Install the roll paper in the correct direction. Pull out some roll paper, and close the roll paper cover. When the printer power is on, the roll paper is automatically cut. (initial setting)
Chapter 4 Handling Removing Jammed Paper When a paper jam occurs, never pull out the paper forcibly. Turn off the printer power, open the roll paper cover, and then remove the jammed paper. Do not touch the thermal head. (See"Cleaning the Printer" on page 79.) It can be very hot after printing.
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Turn the knob until you see a triangle in the opening. This returns the cutter blade to the normal position. Triangle Knob Install the cutter cover.
CAUTION Cleaning the Thermal Head/Platen Roller Epson recommends cleaning the thermal head periodically (generally every 3 months) to maintain receipt print quality. Depending on the roll paper used, paper dust may stick to the platen roller and the paper may not be fed correctly.
Preparing for Transport Follow the steps below to transport the printer. Turn off the printer. Disconnect the AC cable from the socket. Remove the roll paper. Pack the printer upright.
Appendix Appendix Specifications of Interface and Connector USB (Universal Serial Bus) Interface Outline • Full-speed transmission at 12 Mbps [bps: bits per second] • Plug & Play, Hot Insertion & Removal USB transmission specifications USB function Overall specifications According to USB 2.0 specifications Transmission speed USB Full-Speed (12 Mbps) Transmission method...
RS-232 Serial Interface Interface board specifications (RS-232-compliant) Item Specifications Data transfer method Serial Synchronization Asynchronous Handshake Select one of the following with the memory switch • DTR/DSR • XON/XOFF Signal level MARK -3V to -15V logic “1”/OFF SPACE +3V to +15V logic “0”/ON Bit length Select one of the following with the memory switch •...
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Appendix Functions of each connector pin Pin no. Signal name Signal direction Function Input Reception data Output Transmission data Output 1) When DTR/DSR control is selected, this signal indicates whether the printer is BUSY. • SPACE status Indicates that the printer is ready to receive data. •...
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XON/XOFF When XON/XOFF control is selected, the printer transmits the XON or XOFF signals as follows. The transmission timing of XON/XOFF differs, depending on the setting of memory switch 1-3. Memory switch 1-3 Signal Printer status 1 (ON) 0 (OFF) 1) When the printer goes online after turning on the power Transmit Transmit...
Internal parameter settings Internal parameter settings can be changed with the following: • ENPC protocol: Epson provides a dedicated utility that makes miscellaneous setting with the ENPC protocol. • HTTP browser: An HTTP browser can make setting when connected to the module.
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made only from a host PC that supports both arp and ping commands and is in the same segment as the module. Utility Browser Status Default Article Parameters sheet values View Setting View Setting print IP address 192.168.192.168 Subnet mask 255.255.255.0 Gateway address 0.0.0.0...
Appendix Character Code Tables • The character code tables show only character configurations. They do not show the actual print pattern. • “SP” in the table shows a space. Common to All Pages When International character set (See "International Character Sets" on page 131.) is USA:...
Appendix International Character Sets ASCII code (Hex) Country France à ° ç § é ù è ¨ Germany § Ä Ö Ü ä ö ü β U.K. £ Denmark I Æ Ø Å æ ø å Sweden ¤ É Ä Ö...