M2488 PRODUCT GUIDE MEDIA CHANGER COMMANDS
March 1997 CG00000-011503 REV. A 6-25
Table 6-27. Storage Element Descriptor (Type Code=2h)
BITS
BYTES 7 6 5 4 3 2 1 0
0
MSB
Element Address
1
LSB
2
Reserved Access Exception Reserved Full
3
Reserved
4
Additional Sense Code
5
Additional Sense Code Qualifier
6-
8
Reserved
9
SValid Invert=0 Reserved
10
MSB
Source storage element address
11
LSB
12-
15
Reserved
Table 6-28. Storage Element Descriptor Field Description
BYTE BIT VALUE DESCRIPTION
0-1 The Element address field indicates the address of the element for which status is
being reported in the descriptor.
2 0 1
0
The Full bit, if one, indicates that a cartridge is present in the storage element.
If the Full bit is zero then no cartridge is present in the element.
2 2 1
0
The Exception bit, if one, indicates that the element is in an error condition.
If the Exception bit is zero then the element is not in an error condition. When the
Exception bit is one, the Additional Sense code and Additional sense code qualifier
fields give detailed information about the error condition.
2 3 1
0
If the Access bit is one then the storage element is accessible to the medium transfer
element.
If the Access bit is zero the storage element is not accessible to the medium transfer
element.
9 6 0 The Invert bit is always set to 0. The cartridges for the supported tape format cannot
be inverted.
9 7 1
0
If the SValid bit is set to one then the Source storage element address field indicates
the address of the element where the current unit of media [cartridge] in the element
was previously stored.
If the SValid bit is zero then the value in the Source storage element address field is
not valid.
