Table of Contents
Advertisement
TABLE 3-3.
COMMANDS (CONT' D)
Command
Oefinition/Function
DSB 3 (Cont'd)
Detailed Status
Byte
4
(DSB4)
3-38
Seek Incomplete
1.
An
input infoJ:mation cODllllalld.
Meaninq
Positioner could Dot attain
On
Cylinder status with 500
milliseconds after start of
a controller-initiated seek
(SPL, SlUt, ReB, or
RDH).
Also
sets Device Failure (SSa bit
2 1 ).
2. This command causes
the
drive to present a byte of data concern-
inq the
status of the drive at the time the command was received.
3.
The bidirectional data lines are interpreted as follows:
.
22
2
3
24
2 5
2
6
!!!!!.
Reverse
FP
Set
Forward
F!'
Set
Restricted
Air
Flow
Not Used
Pirst Seek Inter-
lock Cycle
Incomplete
Not Used
Tester Address
Error (Offline
Only)
Fine Servo
Status
Meaninq
Status bit indicating that
Seek Reverse
Lower
was last
seek cODllDaDd.
Not affected
by
Recalibrate or Reset Diag-
nostic Mode.
Status bit indicating that
SFL was last seek command.
NOt affected by Recalibrate
or Reset Diagnostic Mode.
Cooling air was of inadequate
volume.
CHECK indicator
liqhts.
Status bit indicating that
First Seek Interlock motor
is operating.
Not used vb'ile Online.
When
Offline, Off Line Tester has
detected a difference between
the current cylinder address
and the address byte read
from the pack.
Device Fail-
ure (SSR 21) is set, but not
returned to controller since
drive is Offline.
In addi-
tion, error may be displayed
by setting DISPLAY SELECT
switch on maintenance panel
to DSB4.
Bit 26 indicator
will be on.
Error is cleared
by pressing CHECK or by re-
turning unit to Online mode.
Fine
1'1'
is set: less than one-
half cylinder remains of seek,
positioner is On Cylinder, or
positioner is in LOAD or RTZ
sequence.
83318200
A
Advertisement
Table of Contents
