HP Surestore 80fx Optical Drive and Library SCSI-2 Command Reference - Page 193
Test Unit Ready Command (00H), Table 3-3
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Table 3-3 Jukebox SCSI-2 Command Set Test Unit Ready Command (00H) Test Unit Ready Command (00H) This command determines the READY state of the library. If the library is in a ready state when it receives this command, it returns a GOOD status. If the library is not ready when it receives the Test Unit Ready Command, it returns a CHECK CONDITION with a sense key of NOT READY. Test Unit Ready Command CDB Byte 7 6 5 4 3 2 1 0 0 Operation Code (00H) 1 Logical Unit Number (0) Reserved (0) 2 Reserved (0) 3 Reserved (0) 4 Reserved (0) 5 Control Byte (0) 3-6 Chapter 3
Jukebox SCSI-2 Command Set
Test Unit Ready Command (00H)
Chapter 3
3-6
Test Unit Ready Command (00H)
This command determines the READY state of the library. If the library
is in a ready state when it receives this command, it returns a GOOD
status. If the library is not ready when it receives the Test Unit Ready
Command, it returns a CHECK CONDITION with a sense key of NOT
READY.
Table 3-3
Test Unit Ready Command CDB
Byte
7
6
5
4
3
2
1
0
0
Operation Code (00H)
1
Logical Unit Number
(0)
Reserved (0)
2
Reserved (0)
3
Reserved (0)
4
Reserved (0)
5
Control Byte (0)