User's Guide

Chapter 3 Emulated DLT7000 SCSI Commands
Log Select (4Ch)
Quantum DX-Series Software Interface Guide 157
Error Detection
Summary in LOG
SELECT Pages
3
The host issues a LOG SENSE command to initialize host-resident
software that allows determination of:
• The log pages used by the drive
• 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 with sense data set to
ILLEGAL REQUEST and additional send code INVALID FIELD IN
PARAMETER LIST:
• A page header is received 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 LP bit (see table 108) is set to 1 in the parameter control byte
• The DS bit (see table 108) is set to 0 in the parameter control byte
• The TSD bit (see table 108) is set to 0 in the parameter control byte
Parameter Length This field specifies the number of bytes of the
parameter value.
Parameter Value This field indicates the actual value of this log
parameter.
Field Name Description