LK-T21 Technical Manual
command that consists of 2 or more bytes.
Example :
If you attempt to transmit ESC 3 n to the printer, but DTR (DSR for
the host computer) goes to MARK before n is transmitted and then
DLE EOT 3 interrupts before n is received, the code <10> H for DLE
EOT 3 is processed as the code for ESC 3 <10>H.
n = 1: Printer status
Bit Off/On Hex Decimal Function
0 Off 00 0 Not used. Fixed to Off
1 On 02 2 Not used. Fixed to On
Off 00 0 Drawer open/close signal is LOW (connector pin 3). 2
On 04 4 Drawer open/close signal is HIGH (connector pin 3).
Off 00 0 On-line 3
On 08 8 Off-line.
4 On 10 16 Not used. Fixed to On
5,6 - - - Undefined.
7 Off 00 0 Not used. Fixed to Off.
n = 2: Off-line status
Bit Off/On Hex Decimal Function
0 Off 00 0 Not used. Fixed to Off
1 On 02 2 Not used. Fixed to On
Off 00 0 Cover is closed 2
On 04 4 Cover is open
Off 00 0 Paper is not being fed by using the FEED button 3
On 08 8 Paper is being fed by the FEED button
4 On 10 16 Not used. Fixed to On
Off 00 0 No paper-end stop 5
On 20 32 Printing is being stopped
Off 00 0 No error 6
On 40 64 Error occurs
7 Off 00 0 Not used. Fixed to Off
Bit 5: Becomes on when the paper end sensor detects paper end and printing stops.
n= 3: Error status
Bit Off/On Hex Decimal Function
0 Off 00 0 Not used. Fixed to Off
1 On 02 2 Not used. Fixed to On
2 - - - Undefined
Off 00 0 No auto-cutter error 3
On 08 8 Auto-cutter error occurs
4 On 10 16 Not used. Fixed to On
Off 00 0 No unrecoverable error 5
On 20 32 Unrecoverable error occurs
Off 00 0 No auto-recoverable error 6
On 40 64 Auto recoverable error occurs
7 Off 00 0 Not used. Fixed to Off
Bit 3: If these errors occur due to paper jams or the like, it is possible to recover by
correcting the cause of the error and executing DLE ENQ n (1 ≤ n ≤ 2). If an error
due to a circuit failure (e.g. wire break) occurs, it is impossible to recover.
Bit 6: When printing is stopped due to high print head temperature until the print head
24
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