Control Data Corporation CYBER 170 Series Operator's Manual page 236

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MESSAGE
MTxx,Ccc, TURNED OFF.
MTxx, CAN'T ACCESS DATA.
SIGNIFICANCE
The MT,Ccc,Fff,~ •• ,Ppppppppp line of the
message provides the following information.
cc
ff
ii
nnnnnn
bbbb
pppppppp
Channel number; repeated to
associate this message with the
previous messages.
Software function on which the
error occurred.
Error iteration; number of times
error has been encountered on
this unit without successful
recovery.
Block number on which error
occurred.
Length of block on which error
occurred in octal bytes.
1MT internal error parameters.
The last line of each message provides the
following information.
cc
ec
hhhhhhhh
type
Channel number; repeated to
associate this message with the
previous messages.
Octal error code value.
Parameters passed to the tape
unit for the format function
(refer to the tape drive's
hardware reference manual for
descriptions of the unit format
parameter fields).
Additional description of the
error. Refer to individual
listing of the last line message.
A 7-track magnetic tape unit xx has been
logically turned off due to function reject.
If NT appears in place of MT, the message
indicates a 9-track tape unit.
xx EST ordinal of magnetic tape unit
cc Channel number
Tape mounted on 7-track magnetic tape unit
with EST ordinal xx has label information
that does not allow the user access to data
on that tape. If NT appears in place of MT,
the message indicates a 9-track tape unit.
ACTION
Inform customer engineer.
Mount correct tape or
drop the job (refer to
n.DROP command).
ROUTINE
I
I
lMT
DSD