Epson ES-1000C Reference Manual page 154

ESC g
Format:
Command:
Parameter:
Handshaking:
1 ESC g command
2 ACK code
3 Parameter i
4 ACK code
Parameter range:
i = 00 : Normal mode
H
i = 01 : High speed mode
H
Default value: 00
Explanation:
This command selects scanning in the high-speed mode or the normal
mode. When the high-speed mode is selected, the carriage moves at
about twice the speed of the normal mode.
3-60
Command Reference
ASCII:
Decimal:
Hexadecimal:
i
H
Set scanning mode
ESC g
27 103
1B 67
B4 B5 A5