IBM 3590 - Manual (Page 80)

into the priority cell again, if possible. The priority cell cell-status
indicator LED is then set to alert (steady yellow). See step 9 on page 57
if the priority cell is also full.
Automatic Mode
Automatic mode provides the operator a mechanism to keep the drive
continually fed with cartridges from the magazine. After enabling the ACF, it
automatically feeds cartridges to the device until all the cartridges in the
magazines are processed. The operator can supply specific cartridges to an
application by inserting the cartridge into the priority cell. The priority cell
cartridge is automatically the next cartridge to be loaded into the device,
provided a load operation is not currently in progress. When the specific
cartridge is loaded, the ACF automatically resumes processing cartridges from
the magazine.
Processed cartridges can be removed from the magazine, and unprocessed
cartridges can be added, without disturbing the ACF. The ACF locates each
unprocessed cartridge.
When the ACF is in Automatic mode, the following applies (see also “ACF
Notes” on page 56):
v Initial conditions:
– Automatic mode must be selected from the SET ACF MODE menu.
– The ACF is initialized so the top of the magazine is considered the
current cell.
v Enabling Conditions: Two ways to enable Automatic mode follow:
– Choosing Start on the operator panel, if there is a loadable cartridge in
the magazine
– Inserting a cartridge in the import position of the priority cell.
v Disabling conditions: The ACF is disabled in Automatic mode as follows:
– A magazine or a priority cartridge is processed and returned to its
original cell. No cartridge is present in the import position of the
magazine or the priority cell.
– The ACF is enabled because the operator chose Start. However, the ACF
cannot detect a cartridge in the import position in either the magazine or
the priority cell.
– An attention condition is detected in the ACF; for example, there is an
extra cartridge in the magazine.
v Operation
1. If the ACF is disabled and in Automatic mode, and the operator chooses
Start on the operator panel, the ACF becomes enabled. It verifies that
there is at least one cartridge in the import position of the magazine. If
60 3590 Operator Guide