Epson TM-T20IIIL Technical Reference Guide

Technical Reference Guide

Describes features of the product.

Describes advanced usage methods for the product.

Describes precautions for replacement.

Describes how to handle the product.

Describes setup and installation of the product and peripherals.

Describes how to control the printer and necessary information when you develop applications.

Describes general specications and character code tables.

Product Overview

Setup

Advanced Usage

Application Development Information

Handling

Replacement of the TM-T20

Appendix

M00115002

Rev. C

Cautions

• No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of Seiko Epson Corporation.

• The contents of this document are subject to change without notice. Please contact us for the latest information.

• While every precaution has been taken in the preparation of this document, Seiko Epson Corporation assumes no responsibility for errors or omissions.

• 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 and maintenance instructions.

• Seiko Epson Corporation shall not be liable against any damages or problems arising from the use of any options or any consumable products other than those designated as Original Epson Products or Epson Approved Products by Seiko Epson Corporation.

Trademarks

EPSON is a registered trademark of Seiko Epson Corporation. Exceed Your Vision and ESC/POS are registered trademarks or trademarks of Seiko Epson Corporation.

Microsoft and Windows are registered trademarks of Microsoft Corporation in the United States and/or other countries.

IOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under license.

Android™ is a trademark of Google LLC.

All other trademarks are the property of their respective owners and used for identification purpose only.

ESC/POS® Command System

EPSON ESC/POS is a proprietary POS printer command system that includes patented or patent-pending commands. ESC/POS is compatible with most EPSON POS printers and displays. ESC/POS is designed to reduce the processing load on the host computer in POS environments. It comprises a set of highly functional and efficient commands and also offers the flexibility to easily make future upgrades.

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.

• Possibility of sustaining physical injuries.

CAUTION

• Possibility of causing physical damage.

• Possibility of causing information loss.

Provides information that must be observed to avoid damage to your equipment or a malfunction.

Provides important information and useful tips.

Warnings

WARNING

• To avoid risk of electric shock, do not set up this product or handle cables during a thunderstorm

• Never insert or disconnect the power plug with wet hands. Doing so may result in severe shock.

• Handle the power cable with care. Improper handling may lead to fire or electric shock.

∗ Do not modify or attempt to repair the cable. ∗ Do not place any heavy object on top of the cable. ∗ Avoid excessive bending, twisting, and pulling. ∗ Do not place the cable near heating equipment. ∗ Check that the plug is clean before plugging it in. ∗ Be sure to push the plug all the way in.

• Be sure to use the specified power source.

Connection to an improper power source may cause fire or shock.

• Do not place multiple loads on the power outlet. Overloading the outlet may lead to fire. Plug the power cord directly into the household power outlet (100-240 VAC).

• 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 qualified service personnel.

• Never attempt to repair this product yourself. Improper repair work can be dangerous.

• Never disassemble or modify this product. Tampering with this product may result in injury or fire.

• Do not allow foreign matter to fall into the equipment. Penetration by foreign objects may lead to fire.

WARNING

Cautions

CAUTION

• If water or other liquid spills into this equipment, do not continue to use it. Continued use may lead to fire. Unplug the power cord immediately and contact qualified service personnel.

• Do not use aerosol sprayers containing flammable gas inside or around this product. Doing so may cause fire.

• 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. The product may break or cause injury if it falls.

• Do not use this product in locations subject to high humidity or dust levels. Excessive humidity and dust may cause equipment damage or fire.

• Do not place heavy objects on top of this product. Never stand or lean on this product. Equipment may fall or collapse, causing breakage and possible injury.

• Take care not to push your hand or finger against the manual cutter. Doing so may injure your hand or finger.

∗ When you remove printed paper ∗ When you perform other operations such as loading/replacing roll paper

• Do not open the roll paper cover without taking the necessary precautions, as this can result in

injury from the autocutter fixed blade.

• To ensure safety, unplug this product before leaving it unused for an extended period.

Caution Labels

The caution labels on the product indicate the following precautions.

CAUTION:

Do not touch the thermal head and the frame on its side during or immediately after use. After printing, the thermal head and its surroundings can be very hot.

Restriction of Use

When this product is used for applications requiring high reliability/safety, such as transportation devices related to aviation, rail, marine, automotive, etc.; disaster prevention devices; various safety devices, etc.; or functional/precision devices, etc., you should use this product only after giving consideration to including failsafes and redundancies into your design to maintain safety and total system reliability.

Because this product was not intended for use in applications requiring extremely high reliability/safety, such as aerospace equipment, main communication equipment, nuclear power control equipment, or medical equipment related to direct medical care, etc., please make your own judgment on this product's suitability after a full evaluation.

About this Manual

Aim of the Manual

This manual provides developers/engineers with all the necessary information for design, development and installation of a POS system, and also design and development of a printer application.

Manual Content

The manual is made up of the following sections:

Chapter 1 Product Overview

Chapter 2 Setup

Chapter 3 Advanced Usage

Chapter 4 Application Development Information

Chapter 5 Handling

Chapter 6 Replacement of the TM-T20

Appendix

Product Specifications Specifications of Interfaces and Connectors Character Code Tables

■ For Safety..................................................................................................................................3

Key to Symbols.................................................................................................................................................................. 3

Warnings ............................................................................................................................................................................. 3

Cautions............................................................................................................................................................................... 4

■ Caution Labels .........................................................................................................................4

■ Restriction of Use ....................................................................................................................4

■ About this Manual ..................................................................................................................5

Aim of the Manual ........................................................................................................................................................... 5

Manual Content ................................................................................................................................................................ 5

■ Contents....................................................................................................................................6

Product Overview ............................................................................................ 9

■ Features ....................................................................................................................................9

■ Product Configurations ...................................................................................................... 10

Models................................................................................................................................................................................10

Accessories .......................................................................................................................................................................10

■ Part Names and Functions ................................................................................................. 11

LED Lights .........................................................................................................................................................................12

Connectors .......................................................................................................................................................................13

■ Status and Errors .................................................................................................................. 14

Online and Offline..........................................................................................................................................................14

Automatically Recoverable Errors ............................................................................................................................14

Recoverable Errors .........................................................................................................................................................15

Unrecoverable Errors ....................................................................................................................................................15

Status Display ..................................................................................................................................................................16

■ NV Memory ........................................................................................................................... 17

NV Graphics Memory....................................................................................................................................................17

User NV Memory ............................................................................................................................................................17

Memory Switches (Customized Value)...................................................................................................................17

R/E (Receipt Enhancement) ........................................................................................................................................17

User-defined Page .........................................................................................................................................................18

Maintenance Counter...................................................................................................................................................18

Setup ............................................................................................................... 19

■ Flow of Setup ........................................................................................................................ 19

■ Installing the Printer............................................................................................................ 20

■ Connecting the Printer to the Host................................................................................... 20

USB Interface ...................................................................................................................................................................20

Serial Interface ................................................................................................................................................................21

Ethernet Interface ..........................................................................................................................................................21

■ Connecting the AC cable .................................................................................................... 22

Connecting Procedure .................................................................................................................................................22

■ Connecting the Cash Drawer............................................................................................. 23

Cash Drawer Requirements ........................................................................................................................................23

Connecting the Drawer Kick Cable..........................................................................................................................24

■ Connecting the Optional External Buzzer....................................................................... 25

Connecting Procedure .................................................................................................................................................25

Advanced Usage ............................................................................................ 26

■ Software Settings................................................................................................................. 26

Feature ...............................................................................................................................................................................27

■ Setting/Checking Modes .................................................................................................... 34

Self-test Mode .................................................................................................................................................................36

NV Graphics Information Print Mode......................................................................................................................36

Receipt Enhancement Information Print Mode ..................................................................................................37

Software Setting Mode ................................................................................................................................................37

Restore Default Values Mode.....................................................................................................................................39

Interface Setup Mode (Ethernet model only) ......................................................................................................40

Hexadecimal Dumping Mode ...................................................................................................................................40

■ Printing a Status Sheet........................................................................................................ 42

■ Resetting the Interface Settings ....................................................................................... 43

Application Development Information....................................................... 44

■ Controlling the Printer ........................................................................................................ 44

ESC/POS.............................................................................................................................................................................44

■ Controlling the Cash Drawer.............................................................................................. 45

■ Controlling the Optional External Buzzer ....................................................................... 46

■ Software................................................................................................................................. 47

Development Kits ..........................................................................................................................................................47

Drivers ................................................................................................................................................................................48

Utilities ...............................................................................................................................................................................49

Download .........................................................................................................................................................................49

■ Notes on Printing Barcodes and Two-dimensional Symbols....................................... 50

Handling ......................................................................................................... 51

■ Installing and Replacing Roll Paper.................................................................................. 51

■ Removing Jammed Paper .................................................................................................. 53

When the Roll Paper Cover Cannot be Opened..................................................................................................53

■ Cleaning the Printer............................................................................................................. 54

Cleaning the Printer Case............................................................................................................................................54

Cleaning the Thermal Head/Platen Roller .............................................................................................................54

■ Preparing for Transport....................................................................................................... 55

Replacement of the TM-T20.......................................................................... 56

■ Compatibility ........................................................................................................................ 56

Printing ..............................................................................................................................................................................56

Print Speed .......................................................................................................................................................................56

Cutting Method ..............................................................................................................................................................56

Logo Registration...........................................................................................................................................................56

Driver Compatibility......................................................................................................................................................56

USB Low Power Consumption Mode ......................................................................................................................56

Paper Width......................................................................................................................................................................57

IP Address Setting..........................................................................................................................................................57

If Connecting as a Peripheral Device of the TM-i/DT Printer ..........................................................................57

Overall Dimensions .......................................................................................................................................................58

Appendix......................................................................................................... 59

■ Product Specifications ........................................................................................................ 59

Printing Specifications .................................................................................................................................................60

Character Specifications ..............................................................................................................................................61

Paper Specifications ......................................................................................................................................................62

Printable Area..................................................................................................................................................................63

Printing and Cutting Positions ..................................................................................................................................63

Electrical Characteristics..............................................................................................................................................64

Environmental Conditions..........................................................................................................................................65

External Dimensions and Mass .................................................................................................................................66

■ Specifications of Interfaces and Connectors .................................................................. 67

USB Interface ...................................................................................................................................................................67

RS-232 Serial Interface .................................................................................................................................................68

Ethernet Interface ..........................................................................................................................................................71

■ Character Code Tables......................................................................................................... 73

Product Overview

This chapter describes features of the product.

Features

Printing

High speed receipt printing is possible (200 mm/s maximum).

Handling

Easy drop-in paper loading

Software

Chapter 1 Product Overview

• Command protocol is based on the ESC/POS® Proprietary Command System.

• Windows printer drivers, OPOS ADK, and OPOS ADK for .NET are available.

• Printing of various types of bar codes, GS1-DataBar, and two-dimensional symbols (PDF417, QR code,

MaxiCode, Composite Symbology) is supported.

• A maintenance counter function is supported.

• Multiple languages are supported for code pages, Windows drivers, and utility software.

Interface

The interface is selectable when purchasing the product.

Environment

Paper reduction function is available.

Others

Optional external buzzer is available.

Product Configurations

Models

• Serial (RS-232C)/USB interface model

• Ethernet interface model

Accessories

Included

• Roll paper (for operation check)

• Interface cable (Serial/USB model only)

• AC cable

Chapter 1 Product Overview

• User's Guide

Options

• Affixing tape for fixing the printer (Model: DF-10)

• External buzzer (Model: OT-BZ20)

Part Names and Functions

Chapter 1 Product Overview

1 Roll paper cover Open this cover to install/replace the roll paper.

2 Cover open lever Use this button to open the roll paper cover.

3 LED lights For details on the LED lights, see "LED Lights" on page 12

4 Feed button Press this button to feed the roll paper by one line. Hold down this button to feed the

roll paper continuously.

5 Power button Press this button to turn the printer on or off.

6 Status sheet button

(Ethernet interface model only)

When turning off the printer without using the power button, it is recommended to send a power-off command to the printer. If you use the power-off sequence, the latest maintenance counter values are saved. (Maintenance counter values are usually saved every two minutes.) For information about ESC/POS commands, see the ESC/POS Command Reference.

Press this button to print the interface status sheet, or to reset the interface settings.

Chapter 1 Product Overview

12 3

LED Lights

1 Power LED • On when the power supply is on.

• Off when the power supply is off.

2 Error LED Lights or flashes when the printer is offline. (For information about the lighting and

flashing patterns, see

• Lights after the power is turned on or after a reset (offline). Automatically goes out after a while to indicate that the printer is ready.

• Lights when the end of the roll paper is detected, and when printing has stopped (offline). If this happens, replace the roll paper.

• Off when the printer is in standard mode (online).

"Status and Errors" on page 14.)

3 Paper LED • Lights when there is no more roll paper.

• Off when there is a sufficient amount of roll paper remaining.

• Flashes when a self-test is in progress or when macro execution standby state.

Connectors

All connectors are located on the lower rear of the printer.

Available interface may vary depending on the model.

Chapter 1 Product Overview

1 USB connector Connects the USB cable for connecting to a computer.

2 Serial interface Connects the serial cable for connecting to a computer.

3 Ethernet connector Connects the 10BASE-T/100BASE-TX Ethernet cable.

4 Drawer kick connector Connects the cash drawer or the optional external buzzer.

"Connecting the Cash Drawer" on page 23

"Connecting the Optional External Buzzer" on page 25

5 Power supply connector Connects the AC cable.

Status and Errors

The LEDs light or flash to indicate the printer status.

The printer cannot print while an error is left unsolved.

Online and Offline

Online

The printer is online and ready for normal printing unless there is a reason to go offline.

Offline

The printer automatically goes offline under the following conditions:

Chapter 1 Product Overview

• While the printer power is turning on/off

• While a self-test is running

• While roll paper is fed using the Feed button

• When the printer stops printing due to a paper end (when the paper out detector detected the paper out)

• During an operation standby state

• When an error has occurred (See

• While the roll paper cover is open

"Status and Errors" on page 14)

Automatically Recoverable Errors

The printer cannot print when automatically recoverable errors occur. They can be recovered easily, as described below.

Error Error description Error LED status Condition for Recovery

Roll paper cover open error

Head temperature error A high temperature outside the

The roll paper cover was opened during printing

thermal head drive operating range was detected

ON Recovers automatically when the

roll paper cover is closed

ON Recovers automatically when the

thermal head cools.

Chapter 1 Product Overview

LED OFF

LED ON

Approx. 320 ms

Recoverable Errors

The printer cannot print when a recoverable error occurs. It can be recovered easily by turning the power on again or sending an error recovery command from the driver after eliminating the cause of the error.

Error Error description Error LED status Condition for Recovery

Autocutter error

Autocutter does not work correctly

The error recovery command is valid only if a recoverable error (excluding automatically recoverable errors) occurs.

Use the TM-T20IIIL Utility to change the condition for recovery. For details, see the TM-T20IIIL Utility User's Manual.

ON Recovers from the error when

the jammed paper or foreign matter is removed, and the roll paper cover is closed.

Unrecoverable Errors

The printer cannot print when an unrecoverable error occurs. If the error persists after turning the printer off and then on again, the printer may be defective. Contact qualified service personnel.

Turn off the power immediately when an unrecoverable error occurs.

CAUTION

Error Error description Error LED flash code

R/W error in memory After R/W checking, the printer does not work

correctly.

High voltage error The power supply voltage is extremely high.

Low voltage error The power supply voltage is extremely low.

CPU execution error The CPU is executing an incorrect address.

Internal circuit connection error

Internal circuits are not connected correctly.

Chapter 1 Product Overview

Status Display

Power LED Error LED Paper LED

Online ON OFF OFF

Initializing after power-on ON ON -

Running a self-test ON OFF -

Waiting to continue self-test ON OFF Flashing

Feeding using the Feed button ON OFF -

Waiting to execute a macro ON OFF Flashing

Roll paper cover open while the printer is not printing

No paper ON ON ON

While updating firmware (Main) ON Flashing Flashing

While updating firmware (Boot) ON ON ON

Power off standing by ON OFF Flashing

The network link is down ON Flashing* -

Waiting to print status sheet ON ON Flashing

ON ON -

-: Changes depending on whether or not paper is detected.

*: The error LED flashing patterns are as follows.

LED ON

LED OFF

Approx. 640 ms

Approx. 5,120 ms

Chapter 1 Product Overview

NV Memory

The printer is equipped with the NV memory (Nonvolatile Memory) to store data even after the printer power is turned off. NV memory contains the following memory areas for the user:

• NV graphics memory

• User NV memory

• Memory switches

• R/E (Receipt Enhancement)

• User-defined page

• Maintenance counter

As a guide, NV memory rewriting should be 10 times or less a day when you program applications.

CAUTION

NV Graphics Memory

Graphics, such as shop logos to be printed on receipts, can be stored. Even with a serial interface model whose transmission speed is low, high speed graphics printing is possible.

TM-T20IIIL Utility or ESC/POS commands can be used for the graphic registration.

TM-T20IIIL Utility or NV Graphics Information Print Mode can be used for the confirmation.

User NV Memory

You can store and read text data for multiple purposes, such as for storing a note including customizing or maintenance information of the printer.

Memory Switches (Customized Value)

You can configure various settings of the printer. For more information, see "Software Settings" on page 26.

R/E (Receipt Enhancement)

Registered graphics in the NV Graphics Memory can be printed automatically, as a top logo before receipt printing or as a bottom logo before cutting paper.

TM-T20IIIL Utility or ESC/POS commands can be used for the settings.

TM-T20IIIL Utility or Receipt Enhancement Information Print Mode can be used for the confirmation.

Chapter 1 Product Overview

User-defined Page

You can store character data in the user-defined page (character code table: page 255) so that you can also print characters not resident in the printer.

Maintenance Counter

With this function, printer information, such as the number of lines printed, the number of autocuts, and printer operation time after the printer starts working, is automatically stored in NV memory. You can use the counter information for periodical checks or part replacement.

• You can also check the print head running length and number of times of auto-cutting with the self-test (see

• The maintenance counter value is normally saved in the NV memory every 2 minutes (maximum of 4 minutes). However, it is not automatically saved when the product is in the power-saving mode or when the power is turned off without using the power switch.

"Self-test Mode" on page 36).

Setup

2. Connecting the Printer to the Host (page 20)

5. Connecting the Optional External Buzzer (page 25)

3. Connecting the AC cable (page 22)

1. Installing the Printer (page 20)

4. Connecting the Cash Drawer (page 23)

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.

Chapter 2 Setup

Installing the Printer

Wire saddle

USB cable

Observe the following precautions when installing the printer.

• The printer must be installed horizontally.

• Do not place the printer in a dusty location.

• Do not knock or strike the printer. This may cause defective print.

• Do not catch cables or place foreign matter under the printer.

• Take measures to prevent the printer from moving by vibration during paper cutting and when using a

drawer. Affixing tape (Model: DF-10) is provided as an option.

Connecting the Printer to the Host

• Be sure to install the driver before connecting the printer to the host computer.

• The printer uses a modular connector specifically designed for the cash drawer. Do not connect

the connector to an ordinary telephone line.

Chapter 2 Setup

USB Interface

When using USB cable to connect with host device, connect the USB cable to the printer, and after starting the host device, turn the printer on.

When connecting the USB cable to the printer, fix the cable with the wire saddle to prevent it from being disconnected.

Do not place any weight or stress on the cable when using. Doing so could damage the cable and connectors.

Chapter 2 Setup

Serial Interface

When connecting to the host computer through a serial interface (RS-232), connect a serial cable to the printer, start the host computer, and then turn on the printer.

When using connectors equipped with screws, tighten the screws on both sides to secure the connectors firmly.

Ethernet Interface

Use an Ethernet cable to connect the printer to network via a hub.

Use Epson TM-T20IIIL Utility or EpsonNet Config to set network.

For details on Epson TM-T20IIIL Utility, refer to TM-T20IIIL Utility User's Manual.

For details on EpsonNet Config, refer to EpsonNet Config User's Guide.

• When LAN cables are installed outdoors, make sure they are connected through devices that have surge protection. Otherwise, the devices can be damaged by lightning.

• Never attempt to connect the drawer kick cable or a standard telephone line cable to the LAN connector.

As same with Conventional models, you can use EpsonNet Config (Web version) in the same way. Start up a web browser and then input the printer's IP address in the address bar. On the authentication screen, input your user name and password.

The default setting for the password varies depending on the firmware version.

Firmware version User name

Before 13.04 ESC/POS

13.04 ESC/POS or later

You can check the firmware version using the self-test ( You can check the product's serial number using a self-test ( manufacturing nameplate attached to the product.

"epson"

Password

"epson"

Product serial number (10 alphanumeric characters, case sensitive)

"Self-test Mode" on page 36).

"Self-test Mode" on page 36) or on the

Connecting the AC cable

Power supply connector

AC cable

• Never insert the AC cable plug into a socket that does not meet the rated voltage requirements of the printer.

WARNING

Be sure to use the included AC cable.

Connecting Procedure

Make sure the printer is turned off.

Connect the AC cable to the power supply connector.

Doing so may result in damage to the printer.

• Should a fault ever occur, immediately turn off the power to the printer and unplug the AC cable from the wall socket.

Chapter 2 Setup

Insert the AC plug into a wall socket.

Do not turn on the printer before installing the printer driver.

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