Brother RJ-4040 - Manual (Page 103)

ESC/P Command Reference
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5. Control Command Details
ESC iXA1 Retrieve default alignment
ASCII: ESC i X A 1 n1 n2
Decimal: 27 105 88 65 49 n1 n2
Hexadecimal: 1B 69 58 41 31 n1 n2
Parameters
n1: 00h (Fixed)
n2: 00h (Fixed)
Description
 The default alignment setting is returned as 3-byte data.
[1] 01h (Fixed)
[2] 00h (Fixed)
[3] Setting
00h: Left alignment
01h: Center alignment
02h: Right alignment
 The retrieved value is a value specified by a static command.