User's Guide

Table Of Contents
Chapter 2 Media Changer Commands
Send Diagnostic Command (1Dh)
Quantum SuperLoader 3 Software Interface Guide 135
Send Diagnostic Command (1Dh)
The SEND DIAGNOSTIC command directs the media changer to perform
its self-diagnostic tests.
Figure 79 Send Diagnostic
Descriptor
Table 61 Send Diagnostic
Command Data
Bit
Byte 7654 3 210
0
Operation Code (1Dh)
1
Logical Unit Number PF (0) Reserved Selftst DevOfl UnitOfl
2
Reserved
3 - 4
(MSB)
Parameter List Length
(LSB)
5
Unused Reserved Flag Link
Field Description
PF
Page Format. Not supported; must be 0.
Selftst
Self Test. A Selftst bit of 1 directs the media changer to
perform its default self test. A
Selftst bit of 0 is not
supported.
DevOfl
Device Off-line. This bit is used in conjunction with
Selftst and UnitOfl to specify the type of testing to be
done. This bit must be set to 0.