Tandberg Data SLR7-140 PROGRAMMER Manual page 191

BYTE BIT 7
n+0 Parameter Code = 0002h
n+1
n+2 DU
n+3 Parameter Length = 03h
n+4
 Total Power On Time
n+6
Table 13-41:
Parameter Code
DU
DS
TSD
ETC
TMC
LP
Parameter Length
Total Power On
Time
Tandberg Data
Total Power On Time Parameters
6 5
DS TSD
Total Power On Time Parameters
The Parameter Code is set to 0002h.
The Disable Update (DU) bit will normally be set to 0 to
indicate that the Drive is always free to update the
counter. If the counter reaches its maximum value
(FFFFFFh) the DU bit is set to 1 and cause the counter
to retain its maximum value.
(Note: This bit can not be changed by the initiator)
The Disable Save (DS) bit is set to 0 to indicate that
the Drive does support saving of this log parameter.
(Note: This bit can not be changed by the initiator)
The Target Save Disable (TSD) bit is set to 0. The Drive
will save this log parameter each time a cartridge is
unloaded.
(Note: This bit can not be changed by the initiator)
An Enable Threshold Comparison (ETC) bit indicates
whether comparison to the threshold value is performed
or not.
The default value is 0. See the LOG SELECT command for
further description.
The Threshold Met Criteria (TMC) field is valid only if
ETC bit is 1 and it selects one of four possible
Threshold Met Criteria.
The default value is 11b. See the LOG SELECT command for
further description.
The List Parameters (LP) bit is set to 0 to indicate
that the parameter is a data counter.
(Note: This bit can not be changed by the initiator)
This field is set to 03h to indicate that the counter is
3 bytes wide.
The Total Power On Time counter accumulates the total
amount of minutes the Drive has been on
Any attempt by initiator to alter this counters value
will be ignored.
1
The range of this counter, 0 to 16777215 minutes, corresponds to a
period from 0 to about 31 years.
13-44 Tandberg SLR Product Line SCSI Functional Specifications
4 3
ETC TMC
Log Sense
2 1 0
R LP
1
.