OEM MANUAL:K6602924
5 COMMAND DESCRIPTIONS
Revision: 1 / Date: 2003.03.06
Page: 96 / 273
Bit 4 : ETC (Enable Threshold Comparison) bit
An enable threshold comparison (ETC) bit controls the comparison operation of
threshold value and cumulative value of a log parameter. The ETC bit is only
defined for cumulative and threshold parameters which are specified by the PC
field in the CDB.
If the ETC bit is set to one, the RLEC bit(Refer to Table 5.37 Control Mode
Page : Page Code = A
H
) is set to one and the result of the comparison is true, a
UNIT ATTENTION condition will be generated for all initiators. A sense key of
UNIT ATTENTION, a sense code of LOG EXCEPTION, and additional sense
code qualifier of THRESHOLD CONDITION MET will be returned to all
initiators by the drive.
-- LOG SELECT usage -- :
A one value of ETC bit indicates the initiator requests that a comparison to the
threshold value is performed whenever the cumulative value is updated. A
zero value of ETC bit indicates that a comparison is not to be performed.
-- LOG SENSE usage -- :
A one value of ETC bit indicates the threshold comparison operation is enabled.
A zero value of ETC bit indicates the threshold comparison operation is
disabled.
Bit 3,2 : TMC (Threshold Met Criteria) bit
The TMC field (Table 5.22) defines the basis for comparison of the cumulative
and threshold values. The TMC field is valid only if the ETC bit is one.
Table 5.22 Threshold Met Criteria
Bit 3 Bit 2
Basis for Comparison
0
0
Every update of the cumulative value
0
1
Cumulative value equal threshold value
1
0
Cumulative value not equal threshold value
1
1
Cumulative value greater than threshold value
Bit 1 : LBIN bit
The LBIN bit is only valid if the LP is one. If the LP bit is one and the LBIN bit
is zero then
the list parameter is a string of ASCII graphic codes. If the LP bit is one and the
LBIN bit is
one then the list parameter is a list of binary information.
LOG SELECT:(4Ch)