Request Sense Command
August 2016 Commands 191
Parameter Value
EOM: End of Media 0 = Normal
1 = A Forward co mmand encountered End of Media, or a
Reverse Space command encountered BOT.
ILI: Illegal Length Indication 0 = Normal
1 = Requested record size did not match actual record size
Sense Key Indicates general type of error or other condition.
Information Contains residual or other information when the Valid bit is 1.
Additional Sense Length Indicates the number of sense bytes that follow.
Command-specific Information 0 = Not supported
ASC: Additional Sense Code Provides more detail about the error or other condition. Used
with the Sense Key and ASCQ fields. See TABLE 3-147
on page 194..
ASCQ: Additional Sense Code
Qualifier
Provides more detail about the error when used with ASC and
Sense Key. See TABLE 3-147 on page 194.
Field Replaceable Unit Code 0 = Not supported
TABLE 3-144 Field Pointer Sense Key Illegal Request Specific Data
Byte
Bit
76543210
0 SKSV C/D Reserved BPV Bit Pointer
1
thru
2
(MSB)
Field Pointer
(LSB)
Parameter Value
SKSV: Sense Key Specific Valid Sense Key Specific fields Valid
0 = C/D and Field Pointer fields do not contain valid
information.
1 = C/D and Field Pointer fields are valid. Only set when
Sense Key is 5.
C/D: Command or Data field Command or Data field.
0 = Illegal field in parameter data.
1 = Illegal field in Command Descriptor Block.
BPV: Bit Pointer Valid 0 = Not supported
Bit Pointer 0 = Not supported
Field Pointer Indicates which field in parameter data or CDB is invalid. In
the case of a multiple byte field, will point to the first byte of
field in error.
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