
JULY 2007 MAGNUM 224, MAGNUM 448, STORAGELIBRARY T24, OR STORAGELOADER 2U
19-5
WHAT THE LIBRARY RETURNS
19.3.2 ELEMENT STATUS PAGE
The library returns one Element Status page for each group of element
descriptors of the same type.
Element Type Code – Byte 00
This field indicates the specific element type (see page 19-2) being reported by
the element descriptor.
PVolTag – Byte 01, Bit 7
This field indicates if primary volume tag (bar code label) information is
present, as follows:
AVolTag – Byte 01, Bit 6
The library does not support alternate volume tags. The value reported for this
field is 0.
Element Descriptor Length – Bytes 02 and 03
This field indicates the total number of bytes contained in a single element
descriptor, as follows:
If the descriptor being returned is for either the medium transport element
(the cartridge loader) or a storage element (cartridge cell), the length is either
52 bytes (if the VolTag bit is 1) or 16 bytes (if the VolTag bit is 0).
Bit
Byte
7 6 5 4 3 2 1 0
00 Element Type Code
01 PVolTag AVolTag Reserved
02 (MSB)
Element Descriptor Length
(LSB)
03
04 Reserved
05 (MSB)
Byte Count of Descriptor Data Available
(LSB)
06
07
0 Volume tag bytes are omitted from the element descriptors
1 Volume tag information is present
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