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vI I ct jJ t�1
I I -nr-Io r U l l v llVII;:)
USING THE DISC SERVICE FUNCTIONS
Quick Reference Tables
IDENTIFICATION FIELD
<ss s s ss ss>
<VVVVUUUU>
VVVV '"
Volume number
"
UUUU
Unit number
01
SSSSSSSS
Value
numbered unit with
status pending ( al l
o nes if n o un its have
status pending)
Note s
1
Error bit positions correspond to bit
A
positions in Set Status Mask command
"1"
indicates presence of an error.
Unused bit positions must be zeroes
Ali
2.
Fault Errors are unmaskable
3
Error uses parameter field
4.
" Parameter field configuration is de
pendent on reported errors
" Highest priority is given to lowest
n u mbered errors
" Masked errors relinquish their
priOrity
11-30
Request Status Summary
REJECT ERRORS FIELD
o
<0 0 2 0 0 5 6 7> < 8 9 1 0 0 1 2 0 0 0>
2
A
CHANNEL PARITY ERROR
channel command was re
ceived without odd panty
'"
the lowest
5
ILLEGAL OPCODE
An unrecognizable opcode
was received
6
co
MODULE ADDRESSING
An Illegal volume or unit n um
ber was speCified lo r thi s
device
"
7
ADDRESS BOUNDS
The target add ress has ex
ceeded the bounds for this
device
8
A
PARAMETER BOUNDS
parameter (other than unit,
volume, o r target address) is
not allowed lor thiS device
9
A
ILLEGAL PARAMETER
parameter field was the
wrong length lor the opcode
preceding it
"
10
MESSAGE SEQUENCE
The message sequence has
been Violated, (Error sup
pressed
errors have occurred pnor to
sequence error,)
12
MESSAGE LENGTH
The total length of the execu
tion message differs from the
current default value
E R R O R R E PO R T I N G FIELDS'
8
1 5
1 6
<0 1 7 0 1 9 0 0 22 0><24 0 26 27 28 0 30 31 >
26 - 28
,I
any reject or fault
CS/80
FAULT ERRORS FIEL02
23
24
3 1
1 7
CROSS-UNITS
An error has occurred
during a Copy Data
operation
1 9
CONTROLLER FAULT
A hardware fault oc
curred in the controller
22 =
A
UNIT FAULT
hardware fault has
occurred in the unit
addressed
24
DIAGNOSTIC RESUL T3
The hardware failed the
diagnostic indicated in
the parameter field
RELEASE REQUIRED
This command cannot
be executed until after
release is g ranted to the
deVice
Device requi res release
for indicated reason
26
OPERATOR REQUEST
Release required for
operator request (e,9·,
load/unload, restore)
27
DIAGNOSTIC REOUEST
Release required for
diagnostics initiated
!rom control panel (e.g"
HIO, self test)
28 =
INTERNAL MAINTE
NANCE
Re!ease required lor in
ternal maintenance (e.9"
head alignment. error
log)
30
POWER FAIL
The power to the unit
failed. a diagnostIC de
stroyed configuration,
or a pack was loaded
Device should be recon-
figured
31
RETRANSMIT
The preceding transac
tion should be ret ned.
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