Exabyte EXB-8205 Instruções de Operação descarregar pdf (Página 147)

Byte 02, Bits 7 and 6 – PC (Page Control)

The PC field indicates what type of parameter values you want the

CTS to return. Valid values for this field are as follows:

00b – Return the current threshold values. These values are reset to

their default settings after a power-on reset, SCSI bus reset, or

Bus Device Reset message. In addition, the initiator can issue

a LOG SELECT (4Ch) command to set these values.

01b – Return the current cumulative values. These values are the

values that have accumulated since the last power-on reset,

SCSI bus reset, Bus Device Reset message, or setting by a LOG

SELECT command. When a counter reaches its maximum

value, it is returned as all FFs. (For example, FFFFFFh is

returned as the maximum value for a three-byte counter.)

10b – Return the default threshold values. The default threshold

values cannot be changed. The values returned represent the

maximum values each counter can obtain (all FFs).

11b – Return the default cumulative values. The default cumulative

values cannot be changed. The values returned represent the

values that each counter is reset to (whether by power-on reset,

SCSI bus reset, Bus Device Reset message, or LOG SELECT

reset). The default cumulative value for all counters is 0.

Byte 02, Bits 5 through 0 – Page Code

The Page Code field indicates which LOG SENSE page you want the

CTStoreturn.Thetypeofdatareturnedforthepagedependsonthe

value you specify for the PC field. The CTS supports the following

pages:

00h – Supported Log Pages page. This page lists the pages supported

by the LOG SENSE command and does not include information

about the counters.

02h – Write Error Counter page. This page includes a log parameter

data block for each write error counter.

03h – Read Error Counter page. This page includes a log parameter

data block for each read error counter.

Bytes 03 and 04 – Reserved

These bytes are reserved.

May 1994 EXB-8205 and EXB-8505

(Standard and XL)

9-3

9 LOG SENSE (4Dh)

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Exabyte EXB-8205 Instruções de Operação Página 147