HP Surestore 80fx Optical Drive and Library SCSI-2 Command Reference - Page 255

Jukebox SCSI-2 Command Set Read Element Status Command (B8H) Table 3-70 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. 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) 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) 3-68 Chapter 3