Reference Guide

Chapter 4 SCSI Commands
LOG SELECT Command (4Ch)
DLT-S4 Interface Reference Guide 65
Table 38 General Purpose
Non-Volatile LOG SELECT
Page — Field Descriptions
Error Detection Summary
in LOG SELECT Pages
4
The host issues a LOG SENSE command to initialize host-resident
software that allows determination of:
• The log pages the drive uses.
• The parameter codes and length of each parameter.
The following conditions constitute errors in the parameter block that
cause the drive to return
CHECK CONDITION status with Sense Data set to
ILLEGAL REQUEST and Additional Sense Code set to INVALID FIELD IN
PARAMETER LIST
:
• The drive receives a page header with unsupported page codes.
• An incorrect log page length is specified in the page header.
• An illegal parameter code is contained in a valid page code.
• Parameter codes for a supported page are not sent in ascending
order.
• The parameter control byte is set to an invalid value for the parameter
code.
Field Description
Parameter Code Parameter code supported for this page. Must be 0.
Parameter
Control Byte
Bit Value Description
DU 1 Disable Update.
DS 0 Disable Save.
TSD 0 Target Save Disable.
ETC 0 Enable Threshold Comparison.
TMC 0 Threshold Met Criteria.
LBIN 0 List Binary.
LP 1 List Parameter.
Parameter Length Specifies the number of bytes in the parameter value. Must be 40h.
Parameter Value Indicates the actual value of this log parameter.