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4.3 SCSI Commands
C156-E224-01EN 4-27
Table 4.42 shows the format of the Sense Data field.
Table 4.42 Request Sense Data
Bit
Byte
76543210
0 Valid Error Code (70h or 71h)
1 Reserved (00h)
2 Reserved (0h) Sense Key
3-6 Information
7 Additional Sense Length (18h)
8-11 Command-Specific Information
12 Additional Sense Code
13 Additional Sense Code Qualifier
14 Reserved (00h)
15-17 Sense-key specific
18-31 Additional Sense Bytes
If the Valid bit is 1, the Information field is valid.
Error Code indicates the sense data format and type. See Table 4.43.
Table 4.43 Error Code
Error Code Report timing
70h (current error) Reported for an error occurring during normal operation
71h (deferred error)
Reported if a cached write operation causes an error while the
write cache is enabled. If this sense data is reported, the
command that reports the Check Condition status is not
executed.
Sense Key summarizes the error. The meanings of the Sense Key values are listed
in Table 4.44.