Specifications

Status
Bits
3=1
4=1
5=1
6
7=1
8=1
9=1
10=1
11=1
12=1
13=1
6-10
Status
Data
End-of-
operation
Alarm
Fail to feed
Protected
Error
Binary card
Separator
card
Fail to feed
Stacker full
or jammed
Input tray
empty
Description
The card reader is ready to
transfer data to the computer.
The last card column was read,
or a reload memory function was
sent.
The card reader has one or more
of the following alarm condi-
tions:
Compare or preread error
Stacker full or jammed
Input tray empty
Fail to feed
Separator card transferred
to memory
AUTO/MAN switch in
manual position
The card failed to feed. Set by
the driver
The controller recognizes only
the input/output instructions
with the protect bit . present.
Bit 7 is 1 when the protect
switch is in the PROT position.
A preread or compare error
occurred.
The contents of the first card
were transferred to memory and
a binary card was detected, or
the negate Hollerith to ASCII
function was selected.
The contents of the first card
were transferred to memory and
a separator card was detected.
The card failed to feed. The
failure was detect~d by hard-
ware.
The stacker is full of cards, or
the cards have jammed.
The input tray is empty.
Status
Bits
14=1
15=1
Status
End-of-file
Manual
switch or
MOTOR
POWER off
Description
The end-of-file 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 AUTO/MAN switch is in
manual position or the MOTOR
POWER switch is off.
1728-430 Card Reader/Punch Controller
Status
Bits
0=1
1=1
2=1
3=1
4=1
5=1
Status
Ready
Busy
Interrupt
Data
End-of-
operation
Alarm
Description
The card reader is operational.
The controller is busy whenever
a card is being entered into the
buffer memory.
The interrupt status is available
if one or more of the selected
interrupts has occurred. Other
bits must be monitored to deter-
mine the condition causing the
interrupt.
The card reader is ready to
transfer data to the computer.
The last card column was read or
a reload memory function was
sent.
The card reader has one or more
of the following alarm condi-
tions:
Compare or pre read error
Stacker full or jammed
Input tray em pty
Fail to feed
Separator card transferred
to memory
AUTO/MAN switch in
manual position
96769450 A