Specifications

Programmers Guide TH230/TH230+

ESC -

Function:

Turn underline mode on/off

Code ASCII: ESC - n

Code HEX: 0x1B 0x2D n

Range:

0 ≤ n ≤ 2, 48 ≤ n ≤ 50

Default: n = 0

Description:

Turns underline mode on or off using n as follows:

n Function

0, 48 Turns off underline mode

1, 49 Turns on underline mode (1-dot

thick)

2, 50 Turns on underline mode (2-dots

thick)

Notes:

• The underline mode is effective for all characters (except for HRI

characters).

• When underline mode is turned on, 90° clockwise rotated characters

and white/black reverse characters cannot be underlined.

• The printer cannot underline the space set by HT, ESC $, and ESC \.

• In Asia version (FS & (Asia version)), changing the character size does not

affect the current underline thickness. Otherwise, underline thickness

grows with vertical charcter size.

• When underline mode is turned off, the following data cannot be

underlined, but the thickness is maintained.

• This command and bit 7 of ESC ! turn on and off underline mode in the

same way.

• The settings of this command are effective until ESC ! is executed, ESC @

is executed, the printer is reset, or the power is turned off