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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

Operation Code (1Dh)

Logical Unit Number PF (0) Reserved Selftst DevOfl UnitOfl

Reserved

3 - 4

(MSB)

Parameter List Length

(LSB)

Unused Reserved Flag Link

Field Description

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.

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