Request Sense Command; Request Sense Data - Fujitsu MCE3064AP Product Manual

4.6.15

REQUEST SENSE command

Bit
7
Byte
0
1 Logical Unit Number
2-3
4
5-11
The REQUEST SENSE command transfers sense data to the host. Sense data indicates detailed
error information on the command whose error was reported previously. If no error command was
reported, SENSE KEY indicates NO SENSE.
When issuing the REQUEST SENSE command to detect the device status, first issue the TEST
UNIT READY command, then issue REQUEST SENSE.
Allocation Length indicates the length of sense data to be transferred in bytes. If Allocation
Length is 0, the command transfers no data and ends normally.
The sense data format is shown in Table 4.95.
Bit
7
Byte
0 Valid
1
2
3-6
7
8-11
12
13
14
15-17
18-31
4 - 62
Table 4.94 REQUEST SENSE command
6 5 4
Operation Code (03h)
Allocation Length
Table 4.95 Request sense data
6 5 4
Error Code (70h or 71h)
Reserved (00h)
Reserved (0h)
Information
Additional Sense Length (18h)
Command-Specific Information
Additional Sense Code
Additional Sense Code Qualifier
Reserved (00h)
Sense-key specific
Additional Sense Bytes
C156-E142-02EN
3 2
Reserved
Reserved
Reserved
3 2
Sense Key
1 0
1 0