IBM 3590 - Manual (Page 26)

specifies the SCSI ID for that interface. (0 through 9 and A through F
correspond with bits 0 through 15 on the SCSI 2-byte wide interface.) Each
Fibre Channel ID consists of six hexidecimal characters that specify the Fibre
ID for that interface. At each power-on, this address is retrieved from
nonvolatile storage.
The online and offline selections control determines whether or not the device
is logically enabled to communicate on the interface. Use “Services Menu” on
page 33 to access this function. Figure 2 on page 7 shows the controls and the
indicator on the operator panel.
The Model E11 and B11 operator panel is mounted above the priority cell on
the Automated Cartridge Facility (ACF). The Model E11 and B11 mounts in a
rack (that is front-serviced) or in an A14 frame (that is rear-serviced).
For the Models B1A and E1A, which do not have an ACF, the operator panel
mounts in front of the drive. Models B1A and E1A mount in the 3494 tape
library as a rear-serviced device.
The operator panel has five push buttons; three are exposed and two are
hidden from view. When the display is in the normal position, the operator
can use the three exposed push buttons (up arrow, down arrow, and Enter).
When the panel is in the service position, the service representative can use
two additional push buttons (Reset and Change Mode). To put the panel in
the service position and expose the two buttons, the service representative
releases two finger latches on the back of the panel.
6 3590 Operator Guide