Read Element Status
184 SL150 Interface Reference Manual Julyl 2017
Element Status Page Header Definition
The library sends this header once for each type of element descriptors.
TABLE 4-103 Element Status Page Header
Byte
Bit
76543210
0 Reserved Element Type Code
1 PVolTag AVolTag
(0)
Reserved (0)
2
to
3
(MSB)
Element Descriptor Length
(LSB)
4 Reserved (00h)
5
to
7
(MSB)
Byte Count of Report Available (all pages, n-7)
(LSB)
8
to
n
Element Descriptors
Element Status Page Header Definitions:
Element Type Code
This field indicates the specific element type being reported by this
element descriptor page.
The types are:
01h = Medium Transport Element (hand)
02h = Storage Element (cartridge tape storage cells)
03h = Import/Export Element (mailslot cells)
04h = Data Transfer Element (tape drive)
PVolTag
This bit indicates if primary volume tag (PVolTag) information has been
requested and is present. The possible values indicate:
0 = Volume Tag information has not been requested. The data is omitted
from the element descriptors.
1 = Volume Tag information has been requested to be reported and is
present.
AVo l Ta g
The library does not support alternative volume tags (AVolTag) and
returns a value of 0.
Element Descriptor
Length
This field indicates the total number of bytes contained in a single
element descriptor.
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