Epson GT-6500 EN - Manual (Page 128)

ESC K Set data order
Format: B5 A5
Command:ASCII: ESC K
Decimal: 27 75
Hexadecimal: 1B 4B
Parameters: i
Handshaking:
1 ESC K command
2 ACK code
3 Parameter (i)
4 ACK code
Parameter range:
i = 00
H
(0): Left top first (from left to right)
i = 01
H
(1): Right top first (from right to left)
Default values: i = 00
H
i =0: Left top first i =1: Right top first
3-34 Command Reference