Brother TD-2120N - Manual (Page 86)

P-touch Template 2.0 Command Reference
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7. Control Command Details
ESC iXr1 Retrieve print start received character count
ASCII: ESC i X r 1 n1 n2
Decimal: 27 105 88 114 49 nd1 nd2
Hexadecimal: 1B 69 58 72 31 nh1 nh2
Parameters
nh1: 00h (Fixed)
nh2: 00h (Fixed)
Description
 Retrieves the number of characters specified to be received in order to start printing.
 4-byte data is returned from the printer.
[1]: 02h (Fixed)
[2]: 00h (Fixed)
[3,4]: nh3 nh4 settings
nh3+(nh4*256): Print start received character count
 The retrieved value is a value specified by a static command.
Example
 For a print start received character count of 500 characters:
Code: ESC i X r 1 00h 00h
(1Bh 69h 58h 72h 31h 00h 00h)
Returned value: 02h 00h F4h 01h (244+1*256=F4h+01h*256=500 characters)