3–6 Model 2100 and 2200 Ultra SCSI Controller Enclosures User Guide
Horn Mode
Horn mode (
Ho
) disables or enables the EMU horn. A two-alpha character display
indicates the horn as either enabled (
En
) or disabled (
di
). The default setting is
En
.
Error Codes
If an error occurs,
Er
automatically displays in the EMU alphanumeric display and sounds
an audible alarm. This display and alarm indicates that an error was detected.
NOTE:
Each error code is displayed in the alphanumeric display for a minimum of 15 seconds,
even if it clears immediately after detection.
If an active error code exists for 5 minutes or longer, the error code display changes
immediately upon clearing of the error.
Three error code levels indicate the source and criticality of an error:
■
Level 1 — CRU type (one hexadecimal character and one decimal character with two
periods —
0.2.
). This code level identifies the CRU type that generated the error and its
associated element number, such as power supply number 2 (
0.3.
).
■
Level 2 — Element number (two decimal characters and one period, such as
02.
)
■
Level 3 — Error code (two decimal characters only and no periods, such as
04
)
Error code criticality affects how long the audible alarm sounds. All error codes cause the
increment switch LED to turn O
N
. For enclosure errors, there are four levels that are
distinguished by an audible alarm:
■
Unrecoverable — Alarm sounds constantly.
■
Critical — Alarm toggles O
N
and O
FF
, sounding three beeps every 2 seconds.
■
Noncritical — Alarm sounds two short beeps that repeat every 2 seconds.
■
Informational — Alarm sounds one short beep that repeats every 2 seconds.
The EMU and graphical user interface (GUI) display error codes as follows:
■
All error codes are displayed on the EMU alphanumeric display.
■
All error codes are displayed on the GUI, except EMU operating condition error codes.
■
Valid CRU types range from
02
through
07
and incorporate two periods after each
character.
■
Valid error codes range from
01
through
05
and do not use periods.
