"Left Zero - IBM 129 Reference Manual

Card data recorder
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Operation
Left-blank Field
(Verify)
Left-zero Field
Multipunch (Punch
or Verify)
Numeric
(Shift)
Print
Program
Select
(Automatic)
Program
Select
(Manual)
Punch
OK-corrected
Card
(Column
81)
Punch
OK-verify
Card
(Column
81)
Release a
Record
(Punch)
Release a
Record
(Verify)
Restore
Locked
Keyboard
Procedure
and
Result
In
this
case
the
LZ
bar operates
as
an
LZ
control
in
the
units position
of
a
programmed
LZ
field
only. Otherwise,
it
operates
as
a blank
columns
key.
See
"Blank
Columns"
(verify
mode)
in
this section.
Same
procedure
for
punch/verify:
key
in
all
significant digits in
the
field
(if
none, key
a
0),
then
press
BLANK
COLUMNS/LEFT
ZERO CTRL
or
-LZ
key
if
a
minus
over the
units
is
desired.
Only
field
definition
coding
is
necessary
in
punch mode;
in verify
mode,
LZ
program code
is
necessary.
(This
is:
3-punch
in
the
first
and
last
positions
of
the
field,
plus
field
definition.)
Overpunching any
character
with another
in
the
same column
is
possible
by
holding
down
MULT
PCH
while
keying any
character keys.
This
is
used
when
a
combination of punches
(not
available
on
keyboard)
is
necessary.
Numeric
shift
is
the
normal
setting
of the
keyboard
when
operating in
program
levels 1-6.
In
program
level 0,
use
NUMERIC
shift
key
to
key
numeric
characters. If
NUMERIC
and
ALPHA
shift
are
held
pressed
simultaneously,
NUMERIC
shift
takes precedence.
Be
sure the
key
is
pressed before the data key, to ensure desired
shift.
Numeric
characters are
the
upper
characters
on
each
key.
Printing
is
controlled
by
the
setting
of
PRINT
during keying
into
input
storage
in
punch mode.
(Printing
cannot
be done
in
verify
mode
except
on
correction-punched
cards,
if
PRINT
is
ON.)
To
control printing
by
field,
turn
PRINT
to
ON
or
OFF
by
field
for
the
desired operation.
With
REC ADV/CARD FEED
set
to
AUTO,
the
next record
starts
in
the
program
level
shown on
the
PROGRAM MODE
dial
(home
program).
Changing
PROGRAM MODE
to select
a
new home
program
is
not
effective
until
the
column
indicator
goes
from 00
to 01.
Therefore,
changing
PROGRAM MODE
in
columns 01-80
is
not
effective until
column
01 of
the next
record.
With
REC ADV/CARD FEED
set
to
MANUAL,
each record
stops
with
column
indicator
at
00,
and
the operator
makes
a
manual program
selection,
and
presses
FEED
to continue the
operation.
This allows the
next
record to
start
in a different
level
than
the
PROGRAM MODE
dial
setting.
Manual program
selection
can
be done
at
any time
within a
record;
it is
normally
done
at field
boundaries.
If
a
correction
was keyed
in
while
verifying a record,
the correction card
is
automatically
punched
with a 2-punch
in
column
81.
If
the record
is
verified as
correct
without any
error conditions, a
2-punch
and
a 3-punch
is
automatically
punched
in
column
81 of
the
verified card.
Press
REL;
this
performs
a
programmed
automatic
duplication for
dup
fields
and
spaces the balance
of
the record
if
AUTO
SKIP/DUP
is
ON.
If
AUTO
SKIP/DUP
is
OFF,
the balance
of
the record
is
spaced
(blanE).
Operation
after
column 80
depends
on
the
setting
of
REC
ADV/CARD-
FEED.
Press
REL;
this releases
the
card,
performs
programmed
automatic
verify
if
AUTO
SKIP/DUP
is
ON. The
card
does not
receive
any punches
in
column
81.
If
in verify
mode,
press
VER
RES
or
any
BKSP
key-if
in
punch mode,
press
any
BKSP
key.
If
problem
is
not
resolved, see
Section
6.
Reference
Section
4,
"Left Blank"
Section
4,
"LEFT ZERO"
Section
2,
Section
6,
"MULT
PCH"
and
'Multipunching"
Section
1,
"Numeric
Punch-
ing"
and
Section
2,
"NU-
MERIC"
Section
2,
"PRINT"
Section
MODE
"
4,
"PROGRAM
Section
2,
"REC
ADV/CARD
FEED"
and
"PROGRAM
MODE"
(Rotary
Dial)
and
Section
6,
"Program
Selec-
tion"
Section
3,
"Punch
a
Verify-
Correction
Card" and
Section
4,
"Two-try
Error Correction"
Section
3,
"Verify"
and
Sec-
tion
4,
"Manual
Verifying"
Section
2,
"REL"
Section
2,
"REL"
Section
6,
"Keyboard
Lockup
Recovery
Procedures"
Operation Reference
35

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