Operating instructions

SEPTEMBER 2005 MAGNUM 1X7 LTO AUTOLOADER
19-3
WHAT YOU SEND TO THE AUTOLOADER
Starting Element Address – Bytes 02 and 03
This field indicates the element address at which to start the transfer of data.
Only elements with addresses greater than or equal to the starting address are
reported. Element descriptor blocks are not generated for undefined element
addresses.
Number of Elements – Bytes 04 and 05
This field represents the actual number of element descriptors to be returned.
This is an actual number of element descriptors to be returned, not an element
address range.
The autoloader returns element descriptors of the requested element type,
starting with the first element address equal to or greater than the value in the
Element Address field. All element descriptors are returned for the number of
element descriptors specified in this field, or the number of element
descriptors available, whichever is less.
It is not an error to specify 0FFFFh as a value for this field if you want the
autoloader to return all available elements.
Allocation Length – Bytes 07 through 09
The Allocation Length specifies the total available length in bytes you are
allocating for returned element descriptors. Only complete element
descriptors are returned. The autoloader returns element descriptors until one
of the following conditions is met:
 All available element descriptors have been returned.
 The number of element descriptors specified in the Number of Elements
field has been returned.
 The remaining allocation length is smaller than the next complete element
descriptor or header to be returned.