Epson GT-6500 EN - Manual (Page 152)

ESC d Set line counter
Format: B4 B5 A5
Command: ASCII: ESC d
Decimal: 27 100
Hexadecimal: 1B 64
Parameter: i
Handshaking:
1 ESC d command
2 ACK code
3 Parameter i
4 ACK code
Parameter range:
0
≤
i
≤
255
Explanation:
This command sets the number of the line counter for use with
block-structure data blocks. This makes it possible for the scanner to
send multiple lines of image data in one data block.
The line counter setting is canceled upon execution of the
ESC G (Start scanning) command. In other words, the scanner returns
to line-structure data transmission following execution of ESC G.
3-58 Command Reference