ACL 4/52 Software Interface Guide
Document 6211225-03
Version 3.0
SCSI Interface
3-37
Position To Element (2Bh)
The Position To Element command is used by the host to position the
medium transport element in front of another element within a library.
The host specifies the destination element in the command block. The
library then moves the transport element in front of the destination
element.
The destination element can be one of the following types: storage,
import/export or data transfer. If the address is in error, the library
returns Check Condition status and sets the sense key to Illegal
Request.
The format of the Position To Element Command block is shown
Table 24.
Table 24: Position To
Element Command
Logical Unit Number
The Logical Unit Number must be set to 0. This field indicates
which logical unit the command should be sent to.
Transport Element Address
The default medium transport element address of zero or the
medium transport element address specified by the mode sense
data can be used.
Bit/Byte
7
6
5
4
3
2
1
0
0
Operation Code (2Bh)
1
Logical Unit Number
Reserved (00h)
2
(MSB)
Transport Element Address
(0000h)
(LSB)
3
4
(MSB)
Destination Element Address
(LSB)
5
6
Reserved
(00h)
7
8
Reserved
(00h)
Invert
(0)
9
Reserved
(00h)
