REQUEST SENSE | 6.Command Specification |
CLN: When this bit is set, it indicates drive request cleaning .
MEW: When this bit is set, it indicates Media Warning.
A description of the different Sense Keys (Byte 2), Additional Sense Codes (Byte 12), and the Additional Sense Code Qualifiers (Byte 13) supported by the
The following Table shows the REQUEST Sense Keys and the Additional Sense Key (Byte 12) and the Additional Sense Key Qualifier (Byte 13) supported by the
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Sense | Bytes | Description | |
Key | 12 | 13 |
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00h |
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| NO SENSE: Indicates that there is no specific sense key information to be reported |
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| for the designated logical unit. This would be the case for a successful command or a |
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| command that received a CHECK CONDITION or a COMMAND TERMINATED |
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| status because one of the Filemark, EOM, or ILI bits is set to one. For Filemark or |
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| Setmark detected the drive will be positioned on the EOM side of the mark if the drive |
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| direction was forward and on the BOM side of the mark if the direction was reverse. |
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| 00 | 00 | NO ADDITIONAL SENSE INFORMATION |
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| 00 | 01 | FILEMARK DETECTED |
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| 00 | 02 | |
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| 00 | 03 | SETMARK DETECTED |
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| 00 | 04 | |
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| 00 | 05 | |
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01h |
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| RECOVERED ERROR. |
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| 5D | 00 | FAILURE PREDICTION THRESHOLD EXCEEDED |
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02h |
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| NOT READY. Indicates that the addressed logical unit cannot be accessed. Operator |
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| intervention may be required to correct this condition. Typically this indicates that |
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| there is no tape loaded. This status is also returned if the drive is currently rewinding |
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| following REWIND with Immediate bit set and another command is received (except |
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| for INQUIRY and READ BLOCK LIMITS which return GOOD status). |
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| 04 | 00 | LOGICAL UNIT NOT READY - Media is present within the drive. |
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| This status is returned to any tape motion command following UNLOAD with |
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| Immediate bit set or if the Eject button has been pressed by the operator. Also can be |
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| caused by the command sequence, PREVENT ALLOW MEDIA REMOVAL with |
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| Prevent bit set followed by UNLOAD. Tape motion commands such as READ, |
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| WRITE or SPACE are not allowed but Diagnostics which do not access the tape are |
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| permitted. |
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| 04 | 01 | LOGICAL UNIT IS IN PROCESS OF BECOMING READY - This status is returned |
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| following a LOAD command with the IMMED bit set for any tape motion command |
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| before the tape is loaded. Also during the auto load following a tape insertion. |
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| 30 | 03 | CLEANING CARTRIDGE INSTALLED |
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| 3A | 00 | MEDIUM NOT PRESENT - This status is returned for all tape motion commands |
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| when there is no media within the tape. |
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| 3A | 04 | MEDIUM NOT PRESENT MAM ACCESSIBLE |
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SONY |