Quantum ACL 4/52 Supplementary Manual page 84

ACL 4/52 Software Interface Guide
Document 6211225-03
Version 3.0
Import Enable
Export Enable
Access
Except
Import Export
Full
Additional Sense Code and Additional Sense Code Qualifier
SValid
Invert
Source Storage Element Address
3-50
The Import Enable field indicates whether the element can export a
tape cartridge from the library. It is set to one.
The Export Enable field indicates whether the element can export a
tape cartridge from the library. It is set to one.
An access bit value of one indicates access to the element by a
medium transport element is allowed. This is set to zero if the load
port door is open.
The Exception field is set to one when that element is in an
abnormal state. When the element is in a normal state, it is set to
zero. Further information on the abnormal state will be available in
the Additional Sense Code and Additional Sense Code Qualifier
fields in that element descriptor. See Appendix A for the meaning
of the codes contained in the two Sense Code fields.
The Import/Export field is set to zero if the tape cartridge
contained in the element was placed there by the transfer
mechanism. It is set to one if the tape was placed there by an
operator or if its source is unknown (e.g., after power cycle).
The Full field is set to one whenever the element contains a tape
cartridge. It is set to zero when the element contains no tape or the
Load Port door is open.
These fields are only valid if the Exception field is set to one.
Currently the only valid values for these fields indicate the
Element Contents Unknown condition (ASC=80 ASCQ=22),
Cleaning Cartridge Installed (ASC=30 ASCQ=03) and Operator
Medium Removal Request (ASC=5A ASCQ=01).
The SValid bit is set to one if the information in the Source Storage
Element Address field is valid. If the information is unknown the
SValid bit is set to zero.
The invert field is not supported and is set to zero.
The Source Storage Element Address represents the address of the
last storage element which held the cartridge. The SValid field
indicates whether or not this information is valid.
SCSI Interface