Operating instructions

15-12
SCSI REFERENCE 1012975
CHAPTER 15—READ ELEMENT STATUS (B8h)
Element Address – Bytes 00 and 01
This field contains the address of the data transfer element (the tape drive).
Access – Byte 02, Bit 3
This bit indicates whether the cartridge loader can pick or place a cartridge at
the tape drive location. The cartridge is accessible if it is ejected from the tape
drive. Accessibility is reported as follows:
0 – The tape drive location may not be accessible (a cartridge is loaded in the
tape drive, or the tape drive’s status is unknown).
1 – The tape drive location is accessible (a cartridge is protruding from the tape
drive, or the drive is empty).
Except – Byte 02, Bit 2
The Except (exception) bit indicates the current state of the tape drive, as
follows:
0 – The tape drive is in a normal state.
1 – The tape drive is in an abnormal state and the Additional Sense Code and
the Additional Sense Code Qualifier fields contain information regarding
the abnormal state.
Full – Byte 02, Bit 0
This bit indicates if the tape drive contains a cartridge, as follows:
0 – The tape drive does not contain a cartridge.
1 – The tape drive contains a cartridge.
Additional Sense Code (ASC) – Byte 04
If the tape drive is in an abnormal state, this field contains the value 83h. Refer
to Table 15-3 on page 15-16 for the corresponding ASCQ values and a
corrective action for each abnormal state.
Additional Sense Code Qualifier (ASCQ) – Byte 05
The values for this field are listed in Table 15-3 on page 15-16, along with the
corrective action to take for each abnormal state.
NotBus – Byte 06, Bit 7
This bit indicates whether the tape drive is attached to a medium transport
element on a different SCSI bus. Because the tape drive and the cartridge
loader are on the same SCSI bus, the valid value for this field is 0.