Optical Drive and Library SCSI-2 Command Reference
Jukebox SCSI-2 Command Set
Mode Sense Command (1AH)
Chapter 3 3-21
Jukebox SCSI-2 CommandsJukebox SCSI-2 Commands
Mode Sense Command (1AH) 
This command acquires element parameter information about the 
library. This information includes, but is not limited to the following:
• First storage slot element address and number of storage slots.
• First input/output (mailslot) element address and number of input/
output elements.
• First medium transport element (picker) address and number of 
medium transport elements.
• First optical drive element address and number of drives.
• Characteristics of the various element types.
PC   Page Control defines the type of parameter values to be 
returned as follows:
  0 - Current Values
  1 - Changeable Values
  2 - Default Values
  3 - Saved Values
Table 3-20 Mode Sense Command CDB 
Byte 7 6 5 4 3 2 1 0
0 Operation Code (1AH)
1 Reserved (0)
2 PC Page Code
3 Reserved (0)
4 Allocation Length (Table 3-21 on page 3-22)
5 Control Byte (0)










