User's Guide

Quantum Scalar Intelligent Libraries SCSI Reference Guide Guide 87
Send Diagnostic - 1Dh
What the Library Does With This Command
If the Self Test option is requested, the library executes a pre-defined diagnostic.
Command Usage
This command can be used to verify the operational status of the library and its components.
Send Diagnostic CDB Format
The SEND DIAGNOSTIC CDB format is shown in the following table.
Page Format (PF) – Diagnostic pages are not supported and this field should be set to 0.
SelfTest - When set to 1 the library will perform a predefined self-test. The SEND DIAGNOSTIC command
will not return until this completes, and command completion status will indicate the results of this test. When
set to 0, the self-test is not performed.
Device Offline (DevOfl) - This field is not supported and should be set to 0.
Unit Offline (UnitOfl) - This field is not supported and should be set to 0.
Parameter List Length - This field is not supported and should be set to 0.
Table 83 SEND DIAGNOSTIC CDB format
Bit
Byte
76543210
0 Op Code (1Dh)
1 Logical Unit Number PF Rsvd
SelfTest DevOfl UnitOfl
2 Reserved
3
Parameter List Length
4
5 Control