Optical Drive and Library SCSI-2 Command Reference
Jukebox SCSI-2 Command Set
Rotate Mailslot Command (0CH)
Chapter 3 3-13
Jukebox SCSI-2 CommandsJukebox SCSI-2 Commands
Rotate Mailslot Command (0CH)
The host system may send this SCSI vendor-unique command to the 
optical disk library to control mailslot rotation.
Open   An Open value of 1 causes the mailslot to rotate out. An 
Open value of 0 causes the mailslot to rotate in.
There are three exceptions:
• If another device, including the front panel, already has the mailslot 
prevented or reserved.
• If there is an optical disk already in the transport element (picker).
• If the optical disk library is full.
Table 3-10 Rotate Mailslot Command CDB 
Byte 7 6 5 4 3 2 1 0
0 Operation Code (0CH)
1 Logical Unit Number 
(0)
Reserved (0)
2 Reserved (0)
3 Reserved (0)
4 Reserved (0) Open
5 Control Byte (0)










