Select your printer model

Parameters are refined by the selected printer.

addSymbol method

Adds the display of the two-dimensional symbol to the command buffer.

Syntax

	addSymbol(data, type, level, width, height, dotX, dotY, quietZone);

Parameter

data

Specifies the two-dimensional symbol data as a string.

Specify a string in accordance with the standard of the two-dimensional symbol specified in type.

Type	Description
QR Code Model 1	After converting the string to shift JIS, perform the escape sequence processing, select the data type from the following, and perform encoding. Numbers: 0 to 9 Alphanumeric characters: 0 to 9, A to Z, space, $, %, *, +, -, ., /, : Kanji characters: Kanji characters that can be expressed in shift JIS 8-bit byte data: 0x00 to 0xff
QR Code Model 2

Type

Description

QR Code Model 1

After converting the string to shift JIS, perform the escape sequence processing, select the data type from the following, and perform encoding.

Numbers: 0 to 9
Alphanumeric characters: 0 to 9, A to Z, space, $, %, *, +, -, ., /, :
Kanji characters: Kanji characters that can be expressed in shift JIS
8-bit byte data: 0x00 to 0xff

QR Code Model 2

When specifying binary data that cannot be expressed as a string, specify in the following escape sequence.

String	Description
\xnn	Control code (nn is specified in hexadecimals)
\\	Backslash

type

Value	Description
SYMBOL_QRCODE_MODEL_1	Specifies QR Code Model 1
SYMBOL_QRCODE_MODEL_2	Specifies QR Code Model 2

level

Value	Description
LEVEL_L	Specifies error revision level L.
LEVEL_M	Specifies error revision level M.
LEVEL_Q	Specifies error revision level Q.
LEVEL_H	Specifies error revision level H.
LEVEL_DEFAULT(LEVEL_M)	Specifies the default value (error revision level M).

width

Value	Description
Integer value from 1 to 255	Specifies the module width (in dots). Effective specification range of QR Code Integer value from 3 to 16 (default value: 3)

Value

Description

Integer value from 1 to 255

Specifies the module width (in dots).

Effective specification range of QR Code

Integer value from 3 to 16 (default value: 3)

height

Value	Description
Integer value from 1 to 255	Specifies the module height (in dots). No effective specification range of QR Code. Since the QR Code is square, the specification of the height is ignored.

Value

Description

Integer value from 1 to 255

Specifies the module height (in dots).

No effective specification range of QR Code.

Since the QR Code is square, the specification of the height is ignored.

dotX

Specifies the origin of the x-coordinate for displaying the two-dimensional symbol (in dots).

Value	Description
Integer value from 0 to 799	Effective specification range during landscape orientation
Integer value from 0 to 479	Effective specification range during portrait orientation

dotY

Specifies the origin of the y-coordinate for displaying the two-dimensional symbol (in dots).

Value	Description
Integer value from 0 to 479	Effective specification range during landscape orientation
Integer value from 0 to 799	Effective specification range during portrait orientation

quietZone

Value	Description
true	Specifies quiet zone assignment as enabled.
false	Specifies quiet zone assignment as disabled.

Return value

Return value	Object type
Display object	Display

Exception

Return value	Object type
Parameter " ... " is invalid	Error

Supplementary explanation

Specify addSymbol method at the "Beginning of the row".
Can be used when the layout is specified in addCreateScreenCustom method.
In case there is overlapping with the display of text or image, the two-dimensional symbol is displayed right in front.
If the two-dimensional symbol data specified in data is not in accordance with the type of the two-dimensional symbol specified in type, the two-dimensional symbol is not displayed.
If quiet zone assignment is enabled, a dot white margin (quiet zone) that is four times the value specified in width is added at the top, bottom, left, and right of the two-dimensional symbol.
To enable quiet zone assignment, specify a value in dotX and dotY, with top left of the quiet zone as the origin.

Quick Access

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[Notes]

Epson ePOS SDK includes patented or patent pending functions. The contents must not be disclosed to third parties.

Epson ePOS SDK for JavaScript

Introduction
help
ePOSDevice object
Common to device objects
- callEvent method
OtherPeripheral object
- send method
- onreceive event
Display object
Keyboard object
POSKeyboard object
- onkeypress event
MSR object
- ondata event
Printer object
HybridPrinter2 object
Scanner object
- ondata event
SimpleSerial object
- sendCommand
- oncommandreply event
GermanyFiscalElement object
- operate method
- ongfereceive event
DeviceHubTerminal object
- shutdown method
- restart method
CommBoxManager object
- openCommBox method
- closeCommBox method
CommBox object
ePosDeviceConfiguration object
- Constructor
- getRegisterdDevices method
Appendix
- Error Code List
  - Error Codes acquired in the Callback Parameter and Counteractions
  - Error Codes acquired in the Onreceive Event and Countermeasure
- Key code list
- List of Supported Objects
- List of Supported APIs
- Printer-specific Support Information
  - TM-m10
  - TM-m30
  - TM-m30II
  - TM-m30II-H
  - TM-m30II-NT
  - TM-m30II-S
  - TM-m30II-SL
  - TM-m30III
  - TM-m30III-H
  - TM-m50
  - TM-m50II
  - TM-m50II-H
  - TM-T20II
  - TM-T20III
  - TM-T82III
  - TM-T88VI
  - TM-T88VII
  - TM-L100
  - TM-T70
  - TM-T70II
  - TM-T88IV
  - TM-T88V
  - TM-U220
  - TM-U220II
  - TM-U330
  - TM-P20
  - TM-P20II
  - TM-P60II (Receipt)
  - TM-P60II (Peeler)
  - TM-P80
  - TM-P80II
  - TM-H6000V
  - TM-T20II-i
  - TM-T70-i
  - TM-T82II-i
  - TM-T83II-i
  - TM-T88V-i
  - TM-T88VI-iHUB
  - TM-U220-i
  - TM-U220IIB-i
  - TM-T70II-DT
  - TM-T70II-DT2
  - TM-T88V-DT
  - TM-T88VI-DT2
  - TM-H6000IV-DT
  - TM-T20
  - TM-T82II
  - TM-T83II
  - TM-T90
  - TM-L90
  - TM-H6000IV
- Usage restriction by firmware version