User`s manual

Confidential
RS-T80 Programming Manual
- 96 -
ESC – n
[Function] Turn underline mode on/off
[Format] ASCII ESC - n
Hex 1B 2D n
Hecimal 27 45 n
[Range] 0 ≤ n ≤2, 48 ≤n ≤ 50
[Notes] Turns underline mode on or off, based on the following values of n：
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)
• The printer can underline all characters (including right-side character spacing), but
cannot underline the space set by HT.
• The printer cannot underline 90° clockwise rotated characters and white/black
inverted characters.
• When underline mode is turned off, the following data is not underlined, and the
underline thickness set before the mode is turned off does not change. The default
underline thickness is 1 dot.
• Changing the character size does not affect the current underline thickness.
• Underline mode can also be turned on or off by using ESC !. Note, however, that the
last received command is effective.
[Default] n = 0
[Relative] ESC !
[Demo] 1B 40
1B 2D 02（2-dot thick underline）