Specifications

Status
Bits
6=1
7=1
8=1
9=1
10=1
11=1
Status
Lost data
Protected
Error
Motion
failure
End-of-file
Chip box
error
1729-2 Card Reader
Status
Bits
0=1
1=1
2=1
Status
Ready
Busy
Interrupt
96769450 A
Description
Indicates data not transferred
out of the holding register before
the next column being read
appeared. The
status drops when
a clear
(0=1) is sent to the
controller.
NOTE
When lost data occurs,
no further transfers
occur from
that card.
An end-of-operation
status is generated.
The controller recognizes only
the input/output instructions
with the protect bit present.
Bit 7 is 1 when the
PROTECT
switch is in the PROTECT
position.
A preread or compare error
occurred.
Indicates
that during a card
cycle, the· transport
of the card
failed
The end-of-fiie condition is
caused
by an empty input tray,
unloaded buffer memory, or the
END-oF-FILE switch being on.
. When the input tray does not
contain the last card of a file,
the switch should be
off to
inhibit the status.
The chip box is full.
Description
Card reader operational
Card reader busy
Indicates interrupt response gen-
erated by card reader. Other
status bits must be monitored to
determine the cause of the inter-
rupt.
Status
Bits
3=1
4=1
5=1
6=1
7=1
8=1
9=1
10=1
11=1
Status
Data
End-of-
record
Alarm
Lost
data
Protected
Error
Feed
alert
End-of-file
switch
End-of-file
card
Description
Indicates
data transfer may
occur. Reader data: The
data
hold register contains informa-
tion ready for transfer
to the
computer.
Indicates the card reader com-
pleted operation
Indicates presence
of an alarm
condition
Indicates data not transferred
out of the holding register before
the next column being read
appeared. The
status drops when
a clear
(0=1) is sent to the
controller.
NOTE
When lost data occurs,
no further transfers
occur from
that card,
and an' end-of-operation
status is generated.
Indicates the
PROTECT switch
on the card reader is in PRO-
TECT position. When in this
position, the card reader only
accepts instructions with
a 1 on
the program
protect line. All
other instructions
are rejected.
A protected instruction is used
with either a protected or unpro-
tected card reader.
Indicates a preread error occur-
red
Indicates
that during a card
cycle, the transport of the card
failed
Indicates the END-oF-FILE
switch is
on
Indicates and end-of-file card
has been read. The bit is set by
the driver.
6-11