IBM System/370 145 Manual page 154

Table 20.30.3. 3505 reader. 3525 punch. and 2540 reader/punch feature comparison (continued)
Feature
Read column eliminate
Column binary
operations
optical Mark Reading
51-column card read
capability
Card reading on punch
unit
Card printing
Error recovery
3505 Card Reader
Standard
2540 Card Read Punch
(read features>
Not available
Standard (card Image
feature)
Optional (Column Binary
feature)
optional
(up to 110 vertically
marked columns per card)
Optional
Control unit performs
automatic feed retry.
Control unit identifies
error as permanent,
retryable by ERP, or
retry able
by
ERP after
operator intervention.
Operator informed of
recovery action to be
taken by lights on
backlighted panel
and writeup in error
recovery procedures
drawer. Permanent error
key allows operator to
terminate recovery
action by ERP. Extended
sense byte identifies
unique errors and acts
as interface to CE main-
tenance document.
Not Available
Optional
Control unit does not
perform recovery
procedures. ERP inspects
sense byte to determine
recovery action to
be
taken. Lights on 2540
indicate error that
occurred (no backlighted
panel. permanent error
key, or error recovery
procedures drawer).
Only ..one sense byte
presented.
3525 Card Punch
Standard
with
Card
Read option.
Column binary punch-
ing is standard.
Co~umn binary reading
is standard when Card
Read is installed.
Not
available (with
Card Read option)
2540 Card Read Punch
(punch features)
Not available
Column binary operations
are provided when the Column
Binary feature is installed
for the read feed.
Not available (with Punch
Feed Read)
Optional (Card Read optional (Punch Feed Read
feature) and includes feature). Read Column
column binary read- Eliminate is not provided.
ing. Read Column Elim-
i~te is standard.
Optional TwO-Line or Not available
Multi-Line (up to 25)
Print features
available
Control unit per-
forms automatic punch
retry. other proce-
dures are same as
those for 3505.
Same ERP used for
reader and punch.
Same as read features column.
(Punch retry is programmed
and optional.)