Exabyte EXB-8205 Betriebsanleitung PDF herunterladen (Seite 153)

100

101

Byte 02, Bits 3 and 2 – TMC (Threshold Met Criteria)

The value returned for the TMC bit specifies the conditions under

which the CTS will generate a Unit Attention (6h) sense key when

comparing the current cumulative value to the threshold value.

Threshold comparisons are made when the cumulative value is

updated. Valid values for this field are as follows:

00b – Return Unit Attention when the cumulative value is

updated

01b – Return Unit Attention when the updated cumulative value

equals the threshold value

10b – Return Unit Attention when the updated cumulative value is

not equal to the threshold value

11b – Return Unit Attention when the updated cumulative value is

greater than the threshold value

Important

If you want the CTS to return Unit Attention to notify you

about changes to the counters, first issue a MODE SELECT

(15h) command and send the Control Mode page (Page

Code=0Ah) with the Report Log Exception Condition (RLEC)

bit set to 1. Refer to Chapter 10 for more information.

Byte 02, Bit 1 – Reserved

This bit is reserved.

Byte 02, Bit 0 – LP (List Parameter)

The CTS always returns 0 for this bit, indicating that it does not

support List Parameters.

Byte 03 – Parameter Length

The Parameter Length field indicates the length of the threshold or

cumulative value in bytes. For example, if the value requires two

bytes, the CTS returns 02h for this field.

Bytes 04 to nn – Parameter Value

The Parameter Value field value lists either a threshold value or a

cumulative value for the counter, depending on what you specified

for the PC field in the CDB.

May 1994 EXB-8205 and EXB-8505

(Standard and XL)

9-9

9 LOG SENSE (4Dh)

1 2 ... 148 149 150 151 152 153 154 155 156 157 158 ... 445 446

Kommentare zu diesen Handbüchern

Keine Kommentare

Exabyte EXB-8205 Betriebsanleitung Seite 153

Kommentare zu diesen Handbüchern