Xerox WORKCENTRE 7120 Reference Manual - Page 11

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Xerox WORKCENTRE 7120 Reference Manual
3. PROGRAM INTERFACE
READ ORDERS
The 8-bit Read order specifies the read mode (bi nary or
automatic) and the stacker in which the card will be stacked
upon completion of the read operation. The specified read
mode appl ies to the entire card image -columns 1 through
80.
Read modes may not be changed after the first col-
umn of a given card has been read.
A change to binary
read mode occurs automatically if the automatic read mode
is specified and col umn 1 contains punches in rows 1
and 2.
Each val id order received by the card reader causes one
card to be fed.
Order modifiers may be included in the
basic Read order to specify binary or automatic read mode,
stack on error condition and/or selection of multiple
stackers.
Stacker select options apply to the current card being read.
The card wi
II
be directed to the specified stacker unless an
invalid EBCDIC punch configuration is encountered, a data
overrun occurs, or a read verify error (Model 7140) occurs
and the optional stack on error modifier bit of the Read
order is set to 1, in which case the card will be stacked in
alternate stacker 2 (Model 7120) or in the alternate stacker
(Model 7140).
The following illustration indicates the required and op-
tional bit configurations of the Read order.
(Bits 0, 1,
6,
and 7 must be coded as shown; bits 2-5 are optional
modifier bits.)
o
2
3
4
5
6
7
0 0 M M M M 1 0
""----'
""---'
I
L-Read
~{O
Binary
1 Automatic (EBCDIC)
o
Stack in stacker specified
by bits 2-3
If no error occurs, stack in
stacker specified by bits
2-3; if error occurs, stack
in alternate stacker 2
(Model 7120) or alternate
stacker (Model 7140)
o
Stack in normal stacker
1 Stack in alternate stacker 1
(Model 7120) or alternate
stacker (Model 7140)
3 Stack in alternate stacker 2
(Model 7120) or norma
I
stacker (Model 7140)
READ CARD BINARY
The orders (hexadecimal code) listed in Table 3 cause the
card reader to feed and read a card in the binary mode,
with the card being directed to one of the multiple stackers.
In the binary read mode, 120 bytes are present on a card.
Incorrect length will be signaled to the controlling system
if either fewer or more than 120 bytes are requested for a
binary read card operation.
Table 3. Binary Mode Stacking Action
Order
X '
02
1
X '
12
1
X '
32
1
X'OA '
Stacking Action t
Model 7120
Stack card in normal stacker.
Stack card in alternate stacker 1.
Stack card in alternate stacker 2.
If no data overrun occurs, stack card in
normal stacker; if data overrun occurs,
stack card in alternate stacker 2.
If no data overrun occurs, stack card in
al ternate stacker 1; if data overrun occurs,
stack card in alternate stacker 2.
Stack card in alternate stacker 2.
Model 7140
Stack card in norma
I
stacker.
Stack card in alternate stacker.
Stack card in normal stacker.
If
neither data overrun nor read verify error
occurs, stack card in normal stacker; if data
error occurs, stack card in al ternate stacker.
S tack card in al tern ate stacker.
tModels 7121 and 7122 accept all the above order codes but offer no alternative stacking since they have
only one stacker.
Program Interface
5