Sense Data - Epson ES-1000C Reference Manual

Sense Data

The extension sense data format is used for the sense data
created when an error occurs. This format is described below.
Bit
Byte
0
1
2
3
4
5
6
7
Following is a description of the individual bits and bytes.
Valid:
When set to 0, this bit indicates that the data in the data byte is
invalid. When set to 1, the data is valid.
ILI:
This is the illegal length bit. When set to 1, this bit indicates
that the transfer length or assigned length specified with a
command is not the same as the actual data length required
by the scanner.
7 6
Valid Error class (7)
Segment data number (0)
File mark EOM
Additional sense byte (0)
5 4
ILI Reserved
Information byte (MSB)
Information byte
Information byte
Information byte (LSB)
Interface Specifications
3 2 1 0
Error code (0)
Sense keys
A-17