5.3 Host Commands

Error log index

Indicates the latest error log number. If an error has not occurred, 00 is displayed.

Error log 1 to 5

When an error occurs, the error log index value is incremented and information at the time the error occurred is recorded in the error log area specified by this value. When the error log index exceeds 05, it returns to 01.

Command data 1 to 5

Indicates five commands data in order received by the device until the error occurs. Commands for which an error occurred are included in Command Data 5.

Error data

Indicates the I/O register values when the error is reported.

Status

Bits 0 to 3: Indicates the drive status when received error commands according to the following table.

Bits 4 to 7: Vendor unique

Status

Meaning

 

 

0

Unclear status

 

 

1

Sleep status

 

 

2

Standby status

 

 

3

Active status or idle status (BSY bit = 0)

 

 

4

Off-line data collection being executed

 

 

5 to F

Reserved

 

 

SMART Self Test

The host computer can issue the SMART Execute Off-line Immediate sub- command (FR Register = D4h) and cause the device to execute a self test. When the self test is completed, the device saves the SMART self test log to the disk medium.

The host computer can issue the SMART Read Log Sector sub-command (FR Register = D5h, SN Register = 06h) and can read the SMART self test log.

C141-E120-02EN

5-75

Page 151
Image 151
Fujitsu MHN2200AT, MHN2150AT, MHN2100AT, MHN2300AT manual Host Commands