MEDIA CHANGER COMMANDS M2488 PRODUCT GUIDE
6-24 CG00000-011503 REV. A March 1997
6-2.5.2.3 Element Descriptors
See Table 6-25 through Table 6-31 for descriptions of the Element Descriptors.
Table 6-25. Medium Transport Element Descriptor (Type Code = 1h)
BITS
BYTES 7 6 5 4 3 2 1 0
0-
1
MSB
Element Address
LSB
2
Reserved 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 6-26. Medium Transport 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 Medium transport ele-
ment.
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 medium transport element is in an error
condition.
If the Exception bit is zero then the medium transport element is not in an error con-
dition. When the Exception bit is one, the Additional Sense code and Additional
sense code qualifier fields give detailed information about the error condition.
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
medium transport element was previously stored.
If the SValid bit is zero then the value in the Source storage element address field is
not valid.
