Quantum Instruments DLT 7000 - Manual (Page 168)

SCSI Commands
5-64 Quantum DLT 7000 Tape System
LOG SENSE Command (4Dh) (continued)
Table 5–33 Log Parameters for Device Status LOG SENSE Page Field Descriptions
(continued)
Field Name Description
DU Disable Update. Always 0.
DS Disable Save. Not supported. This bit always set to 1.
TSD Target Save Disable. When = 0, indicates that the target provides a target-
defined method for saving log parameters. When = 1, indicates that either the
target does not provide a defined method for saving log parameters or that
the target-defined method has been disabled by the initiator.
ETC Enable Threshold Comparison. Threshold checking is not supported on this
page. Always set to 0.
TMC Threshold Met Criteria. Always 0.
LP List Parameter. Always set to 0 (parameter codes treated as data counter).
Bit
Byte
7 6 5 4 3 2 1 0
0 Reserved ClnR ClnQ ClnEx
1 - 3
(MSB)
Reserved
(LSB)
Figure 5–31 Log Parameters Format for Device Status LOG SENSE Page Parameter
0001h (Cleaning Related)
Table 5–34 Log Parameters for Device Status LOG SENSE Parameter 0001h (Cleaning
Related) Field Descriptions
Field Name Description
ClnR Set to 1 if a cleaning required condition exists. When the
condition clears, this status is also cleared.
ClnQ Set to 1 if a cleaning request condition exists. When the
condition clears, this status is also cleared.
ClnEx Set to 1 if the cleaning tape has expired. If no cleaning tape is
installed, this bit is cleared.