SATO CL408 Programming Reference Manual page 159

IEEE1284
FUNCTION
Specifies the receive mode and ACK width of IEEE1284.
FORMAT <ESC>I1abbb
EXAMPLE <ESC>A
<ESC>I10010
<ESC>Z
OUTPUT
This command does not result in printer output.
NOTES
1. It is not necessary to use this IEEE1284 <ESC>I1 command under normal conditions.
2. The set parameter by this command will become valid after rebooting.
E/Pro Programming Reference
Unit 4: Standard Command Codes
a = Receive mode (Default: 0)
0 : Multi item buffer
1 : Single item buffer
b = ACK width: Valid range:
4-107
010 to 200 (1=50ns)
PN: 9001096E