Reference Guide

Chapter 4 SCSI Commands
MODE SENSE (6) / (10) Command (1Ah / 5Ah)
DLT-S4 Interface Reference Guide 182
Figure 94 Fibre Channel —
Logical Unit Control MODE
SENSE Page — Data Format
Table 102 Fibre Channel —
Logical Unit Control MODE
SENSE Page — Field
Descriptions
Bit
Byte
7 6 5 4 3 2 1 0
0 PS (0) SPF (0) Page Code (18h)
1 Page Length (06h)
2 Reserved Protocol Identifier (0h)
3 Reserved EPDC (0)
4 — 7 Reserved
Field Description
PS Parameters Savable. Always set to 0.
SPF SubPage Format. Always set to 0. Indicates that this page uses the page_0
page format.
Page Code A value of 18h identifies this as the Logical Unit Control page.
Page Length Indicates the number of bytes in the page, excluding bytes 0 and 1.
Protocol Identifier A value of 0h indicates that this mode page applies to an FCP-2 port (see the
Fibre Channel Protocol – 2 (FCP–2) standard).
EPDC Enable Precise Delivery Checking. Indicates whether the drive uses the precise
delivery function defined by the Fibre Channel standard. Always set to 0. The
drive ignores the contents of the Command Reference Number (CRN) in the
FCP command IU. This value cannot be changed using the
MODE SELECT
command.