User Manual

SCSI Commands Reference Manual, Rev. J 320
www.seagate.com Parameters for direct access devices
5.2.7 Environmental Limits log page (0Dh/02h)
5.2.7.1 Overview
Using the format shown in table 290, the Environmental Limits log page provides information about the environmental limits of
the logical unit using the parameter codes listed in table 289.
The Environmental Reporting log page (see 5.2.8) shall be supported if the Environmental Limits log page is supported. Each log
parameter in the Environmental Limits log page contains limits that are applied to the environmental measurement in the log
parameter in the Environmental Reporting log page that has the same parameter code (e.g., parameter 0000h in this log page is
associated with log parameter 0000h in the Environmental Reporting log page).
The Environmental Limits log page has the format shown in table 290.
DS bit, SPF bit, PAGE CODE field, SUBPAGE CODE field, and PAGE LENGTH field
The DS bit, SPF bit, PAGE CODE field, SUBPAGE CODE field, and PAGE LENGTH field are described in 5.2.2 The SPF bit, PAGE CODE field, and SUB-
PAGE CODE field shall be set as shown in table 290 for the Environmental Limits log page.
The contents of each environmental limits log parameter depends on the value in its PARAMETER CODE field (see table 289).
Table 289 Environmental Limits log page parameter codes
Parameter code Description Resettable or
Changeable
[a]
Reference Support
Required
0000h - 00FFh Temperature Limits Always or Never 5.2.7.2 Optional
0100h - 01FFh Relative Humidity Limits Always or Never 5.2.7.3 Optional
All others Reserved
[a] The keywords in this column -- Always, Reset Only, and Never -- are defined in 5.2.2.3.
[b] The device server may support either Always or Never. If supporting Always, then the device server may round each field up or
down as defined in 2.3.
[c] If more than one Temperature Limits parameter is supported, each Temperature Limits parameter is associated with the tem-
perature at a separate location.
[d] If more than one Relative Humidity Report parameter is supported, each Relative Humidity Limits parameter is associated
with the relative humidity at a separate location.
Table 290 Environmental Limits log page
Bit
Byte
7 6 5 4 3 2 1 0
0 DS SPF (1b) PAGE CODE (0Dh)
1 SUBPAGE CODE (02h)
2 (MSB)
PAGE LENGTH (n-3)
3 (LSB)
Environmental Limits log parameter
4
Environmental Limits log parameter [first] (if any). . .
. . .
Environmental Limits log parameter [last] (if any). . .
n