Optical Drive and Library SCSI-2 Command Reference

Jukebox SCSI-2 Command Set
Read Element Status Command (B8H)
Chapter 33-68
Read Element Status Command (B8H)
This command provides the exact status of the various elements
(individual storage slots, mailslot, optical drives, and picker mechanism)
within the library.
Element Type
Code Specifies the element type(s) to report.
0H - All element types reported
1H - Medium Transport Element (picker)
2H - Storage Element
3H - Import/Export Element (mailslot)
4H - Data Transfer Element (drive)
Table 3-70 Read Element Status Command CDB
Byte 7 6 5 4 3 2 1 0
0 Operation Code (B8H)
1 Logical Unit Number (0) Reserved (0) Element Type Code
2 Starting Element Address (MSByte)
3 Starting Element Address (LSByte)
4 Number Of Elements (MSByte)
5 Number Of Elements (LSByte)
6 Reserved (0)
7 Allocation Length (MSByte)
8 Allocation Length (Middle Byte)
9 Allocation Length (LSByte)
10 Reserved (0)
11 Control Byte (0)