User's Guide
Table Of Contents
- Preface
- Theory of Operation
- Media Changer Commands
- Overview of Command and Status Processing
- Media Changer Command Descriptions
- Initialize Element Status Command (07h)
- Inquiry Command (12h)
- Load Unload Command (1Bh)
- Log Sense Command (4Dh)
- Mode Select (6) / (10) Command (15h / 55h)
- Mode Sense (6) / (10) Command (1Ah/ 5Ah)
- Move Medium Command (A5h)
- Persistent Reserve In Command (5Eh)
- Persistent Reserve Out Command (5Fh)
- Position to Element Command (2Bh)
- Prevent/Allow Medium Removal (1Eh)
- Read Buffer Command (3Ch)
- Read Element Status Command (B8h)
- Release Element (10) Command (57h)
- Release Unit (6) Command (17h)
- Report Device Identifier Command (A3h)
- Report LUNS Command (A0h)
- Request Sense Command (03h)
- Reserve Element (10) Command (56h)
- Reserve Element (6) Command (16h)
- Send Diagnostic Command (1Dh)
- Set Device Identifier Command (A4h)
- Test Unit Ready Command (00h)
- Write Buffer Command (3Bh)
- Index
Chapter 2 Media Changer Commands
Read Element Status Command (B8h)
Quantum SuperLoader 3 Software Interface Guide 101
Table 47 Read Element Status
Command Descriptor Block
Field Name Description
VOLTAG When set to 1, the SuperLoader 3 will report volume tag information.
When set to 0, no volume tag information will be reported.
Element Type
Code
Specifies the particular element type(s) selected for reporting by this
command. The element type codes are defined as follows.
Code Description
0h All element types reported (valid in CDB only)
1h Medium transport element
2h Storage element
3h Import/export element
4h Data transfer element
5h-Fh Reserved
Starting Element
Address
Specifies the minimum element address to report. Only elements with an
element type code permitted by the Element Type Code field, and an
element address greater than or equal to this address shall be reported.
Element descriptor blocks are not generated for undefined element
addresses.
Number of
Elements
Specifies the maximum number of element descriptors to be reported.
CURDATA When set to 1, the SuperLoader 3 will return the current element status
information. When set to 0, the SuperLoader 3 may cause device motion
to confirm element status data.
DVCID When set to 1, the SuperLoader 3 will return the supported device
identifiers. When set to 0, the SuperLoader 3 will not return the device
identifiers.
Allocation Length Specifies the number of bytes to be returned. If it is not sufficient to
transfer all the requested element descriptors, the SuperLoader 3 will
only transfer those descriptors that can be completely transferred and
this shall not be considered an error.