Brother QL-720NW - Manual (Page 78)

P-touch Template Command Reference
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7. Control Command Details
ESC iXn1 Retrieve number of selected template
ASCII: ESC i X n 1 n1 n2
Decimal: 27 105 88 110 49 n1 n2
Hexadecimal: 1B 69 58 6E 31 n1 n2
Parameters
n1: 00h (Fixed)
n2: 00h (Fixed)
Description
 Retrieves the template number selected from the printer.
 3-byte data is returned from the printer.
[1]: 01h (Fixed)
[2]: 00h (Fixed)
[3]: Setting
 The retrieved value is a value specified by a static command.
Example
 When template number 99 is selected:
Code: ESC i X n 1 00h 00h
(1Bh 69h 58h 6Eh 31h 00h 00h)
Returned value: 01h 00h 63h