Specifications

Programmers Guide TH230/TH230+
28
n = 4 (paper roll sensor status)
Bit Function
Value
0 1
0 Not used Fixed to 0
1 Not used Fixed to 1
2
Paper near end
sensor
Paper present No paper
3
Paper near end
sensor
Paper present No paper
4 Not used Fixed to 1
5
Paper end sensor
Paper present
No paper
6 Paper end sensor Paper present No paper
7 Not used Fixed to 0
Bit 2 and Bit 3: To avoid false reports the paper near end sensor is
monitored by a 0.2 m paper feed hysteresis. That means the printer
doesn’t report paper near end to the host until 0.2 m paper is feed
and all the time the paper near end sensor detects no paper! If the
linefeed button is pressed within the hysteresis, the printer reports
paper near end immediately.
Notes:
• Real time status can be differentiated by the
information of bits 0, 1, 4, and 7 from other
transmission data. If the data transmitted
from the printer is “0xx1xx10” (x = 0 or 1),
process the data as a real time status.
• When the paper roll cover is open, paper
detection (detected by the paper roll end
sensor) may be incorrect.
• Do not embed this command within another
command. For example: Bit image data might
include this command.
Reference: Command GS EOT; Table for the Transmit Status Identification