IBM System/370 145 Manual page 146

If a single punch retry is unsuccessful, punching stops and an erro.r
co.nditio.n is indicated. When the o.perato.r runs o.ut the cards, the
seco.nd erro.r card is placed in stacker 1.
Because o.f the way in which punch retry o.perates, punching into
prepunched o.r serially numbered preprinted cards sho.uld net be attempted
unless the Card Read feature is present. A co.mbined read/punch
o.peration must also.
be
defined so.
tha~
a READ fo.llo.wed by a WRITE AND
FEED command sequence is issued
by
data management. This sequence
causes punch retry to.
be
bypassed if a punch erro.r o.ccurs. Otherwise,
when a punch retry o.ccurred, data meant to be punched o.nly in card N
wo.uld also. be punched into cards N+l and N+2, and card N+l wo.uld be
placed in the erro.r stacker.
The o.ptio.nal Card Read feature (field installable) fer the 3525
pro.vides co.lumn binary o.peratio.ns as a standard feature and offers a
functio.n net available with the Punch Feed Read feature fer the 2540.
Read column eliminate, as already described fer the 3505, is standard en
a 3525 with the read feature. Therefo.re, perforated o.r internally
scored cards can be read from a 3525 as well as fro.m a 3505. In
additio.n, cards are read o.ptically en the 3525, and thus offpunching and
misregistratio.n o.f cards are not as significant a facto.r in successful
card reading as they are when read brushes are used.
Either the Two-Line Card Print or the Multi-Line Card Print optional
feature can be installed on the 3525 in additio.n to. the optio.ns already
discussed. Either the 3525 Two.-Line Print Co.ntro.l o.r the Multi-Line
Print Contro.l feature is
requi~ed
on the 3505 as well. The card print
features are mutually exclusive and net recommended fer field
installatio.n; ho.wever, a change fro.m either feature to. the ether can be
made at the installatio.n.
Engraved type slugs, similar to these used en a 1403 Printer, are
used in the print cartridge assembly in co.ntrast to. the wire matrix
technique used in the 2560 Multi-FUnctio.n Card Machine.. The cartridge
assembly pro.vided fer the 3525 co.ntains 64 characters, and an
installatio.n can o.rder o.ne of two. character sets, EBCDIC (63 characters
including blank) o.r ASCII (64 characters including blank). If the ASCII
cartridge is used, the pro.gram is responsible fer pro.viding ASCII
enco.ded data in sto.rage (that is, the co.ntrol unit will net co.nvert
EBCDIC mode data fro.m storage to ASCII mode for printing>. Black and
purple ink ribbons are available.
The TWO-Line Card Print feature provides the 3525 with the ability to
print two lines of data on a card, up to 64 characters in length, during
a single pass. Card thro.ughput for two-line printing operations equal
to the rated punch speed of the 3525 model can be obtained--l00, 200, o.r
300 cpm. The first line of print is located along the top edge of the
card and the second is between punch rows 12 and 11. This corresponds
to lines 1 and 3 when 25 lines are used, as shown in Figure 20.30.4.
The Multi-Line Card Print feature permits the 3525 to print up to 25
lines on a card, 64 characters in length, during a single pass. Print
lines are shown in Figure 20.30.4. They are .130 inches apart, and
identical in location to the 25 line locations defined for card printing
using the 2560 MFCM. The lines printed on any given card are determined
by programming
0
A print line co.mmand supplies the number of the line on
which printing is to occur as well as the data to
be
printed and
normally causes the card to be positioned in the print mechanism at the
line indicated. Thus different lines can be printed on different cards .•
(Note that lines must be printed in ascending line number sequence and
thus a given line cannot
be
printed on twice in one pass.) For both
card print features, the data printed on each line must be supplied
by
the program and can include data read from
.a
prepunched card (if the
136 A Guide to the IBM System/370 Model 145