Send Diagnostics; Command Description; Command Descriptor Block - Tandberg Data SLR7-140 PROGRAMMER Manual

26.
BYTE BIT 7
00 Operation Code 1Dh
01 Logical Unit Number (LUN)
02 RESERVED
03 Parameter List Length
04
05 Control Byte
Table 26-1:
PF
ST
DOF
UOF

Send Diagnostics

26.1. Command Description

The SEND DIAGNOSTICS
perform diagnostic tests on itself.
A possible SEND
transferred during the DATA OUT phase of the command.
Before starting the actual tests the SEND DIAGNOSTIC
command will write any buffered data in the Drive's data
buffer to the tape. When a Predefined Selftest Sequence
1 has completed successfully, a loaded medium will be
rewound back to the beginning of the current partition.
When a Predefined
successfully, the medium will be positioned at BOP
beginning of partition 0).
When a diagnostic test has executed successfully, the
SEND DIAGNOSTICS command will return GOOD status. When a
diagnostic test has failed, the SEND DIAGNOSTICS command
will return CHECK CONDITION status. The REQUEST SENSE
command can then be used to get further information on
the error. In addition the RECEIVE DIAGNOSTIC RESULTS
command can be used to requests detailed test result
data produced by the last SEND DIAGNOSTICS command to be
transferred to the Initiator.

26.2. Command Descriptor Block

6 5
SEND DIAGNOSTIC Command Descriptor Block
The Page Format (PF) bit MUST be set zero.
A self-test bit of one indicates the device will perform
its default self-test
reserved for Internal Use only.
A Device Off-line bit of one indicates the device can
only perform
media(Predefined self-test list 1).
A Unit Off-line bit of one indicates the device will
perform all tests, which include cartridge manipulation,
reading and writing to test media (Predefined self-test
list 2).
26-1 Tandberg SLR Product Line SCSI Functional Specifications
command requests
DIAGNOSTICS
Selftest Sequence
4 3
PF R
A Self-Test
tests that do
the Drive
parameter list
2 has completed
0
2 1
ST DOF UOF
bit of zero
NOT affect
to
is
(the
0
is
user