Fujitsu M2488 manual Data Transfer Element Descriptor Field Description

MEDIA CHANGER COMMANDS M2488 PRODUCT GUIDE

Table 6-32. Data Transfer Element Descriptor Field Description

BYTE	BIT	VALUE	DESCRIPTION
0-1			The Element address field indicates the address of the element for which status is
			being reported in the descriptor.
2	0	1	The Full bit, if one, indicates that a cartridge is present in the data transfer element
			(tape unit).
		0	If the Full bit is zero then no cartridge is present in the element.
2	2	1	The Exception bit, if one, indicates that the element is in an error condition.
		0	If the Exception bit is zero then the element is not in an error condition. When the
			Exception bit is one, the Additional Sense code and Additional sense code qualifier
			fields give detailed information about the error condition.
2	3	1	If the Access bit is one then the data transfer element is accessible to the medium
			transfer element.
		0	If the Access bit is zero the data transfer element is not accessible to the medium
			transfer element.
6	4-5	0	The LU valid and ID valid bits are always set to zero. The zero values indicate that
			the Logical unit number field (in the data transfer element descriptor) and the SCSI
			bus address field are invalid.
6	7	0	The Not bus bit is always set to zero, this indicates that the medium changer is con-
			nected to the same SCSI bus as the data transfer element (i.e. the tape unit).
9	6	0	The Invert bit is always set to 0. The cartridges for the supported tape format cannot
			be inverted.
9	7	1	If the SValid bit is set to one then the Source storage element address field indicates
			the address of the element where the current unit of media in the element was previ-
			ously stored.
		0	If the SValid bit is zero then the value in the Source storage element address field is
			not valid.

6-28 CG00000-011503 REV. A March 1997