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Drum Insertion
1. With the program sensing mechanism raised, place the
drum on the mounting shaft of the program unit, posi-
tioned so that the aligning pin falls in the aligning hole
in the columnindicatordial.
2. Turn the programcontrol lever to the left or to the on
position to lower the sensing mechanismto the program
card. Press the release key.
CAUTION
Never insert an empty program drum in the program
unit, and never lower the sensing mechanism when the
program drum is notin place.
PROGRAM CARD PREPARATION
Whena program cardis to be prepared for a particular
punching application, the card design should be carefully
analyzed to code the program card for maximum punching
efficiency. Proper use of the various features of the card
punch reduces operator time and effort to aminimum.
_ Greater programming flexibility is gained by using both
program levels.
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The following explanations mention both program levels;
the second code in parenthesis is program two. Also, refer
to Figure 21.
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Programming
To prepare a program card, the following analysis must be
made of the cards to be punched:
1. Field definition coding, which determines the length of
each field. Punch a field definition 12(4) in each column
except thefirst (left-hand) of every field regardless of
the type of operation to be performedin that field. The
12(4)'s are used in skipped or duplicatedfields to
continue the skip or duplication across thefield, once
the operation is started. Field definition punches are
also used in fields programmed for manualpunching to
make full use of the feature provided for the correction
of errors made while punching. With all field-lengths —
defined, each correct field can be duplicated by a single
depression of the dup key, and only the field containing
the error must be rekeyed.
2. Automatic skipping for each field that is not to be
punchedat this time. If several successive fields are to
be skipped on every card, program them as onelarge
field with an 11(5) in the first column and 12(4)'s
in all successive columns.
3. Automatic duplication of each field that is punched with
the same data for a group of cards. If several successive
fields are to be duplicated on every card, program them
as one large field with the zero (or 6) in the first column
and 12(4)'s in all successive columns.
20
4. Alphabetic coding to shift the keyboard whenletters are
to be keyed. If all or most of a field is to be alphabetic-
ally punched, code it with 1(7)'s and use the numeric
shift key for occasional numeric punching. In the dupli-
cation or alphabetic punching, the 1(7)'s permit dupli-
cation of blank columns.
Program Two used for Alternate Programming
When it becomes necessary to alternate programsto handle
two types of cards in one punching operation, all the pre-
ceding operations must be analyzed for the alternate pro-
gram, and the proper codes (4-9) must be punched. Con-
sideration must be given to the time within the card cycle
that the change to the alternate program is to be made. The
change can be madeeither at the beginning of the card orat
any time within the card cycle whenit is desirable for the
alternate coding to becomeeffective. Once the alternate
program is selected, by pressing the program two selection
key, the alternate program codesare read for the remainder
of the card, or until the other program selection keyis
pressed toreturn to the original program. Programs can be
alternated at will in this manner during punching of a card.
However, when the following card is fed, the normal pro-
gram coding, determined by the program selection switch
setting, becomeseffective.
If the first field of a card is to be controlled by thealter-
nate program, the auto feed switch should be turnedoff be-
fore the preceding card reaches column 80. This suppresses
the feed cycle and allows the operatorto select the alternate ~ -
program by pressing the program two key. Pressing the
program two keyalso causes a feed cycle; the new card is
registered in the punchposition.
Multiple Functions
Whenalternate program functionsare used in addition to
the basic program functions, the program card may require
several codes in a column (Figure 23). In this case, punch a
master deck of cards for the preparation of the program
card. This deck consists of a maximum of 12 cards, one for
each punching row: one card punchedwithall the required
12-codes, a second card with all the required 11-codes, a
third card with all the required O-codes, etc. After the cards
of the master deck are punched,duplicate each card, one at
a time, into a single card, which then becomesthe program
card. This method of preparing a program cardfacilitates
the preparation ofslightly changed or duplicate program
cards on the 545 Model 2, because multiple punches other
than standard should not be duplicated. Duplicating other
than standard multiple punch combinations may cause print
mechanism damage. Program cards may be duplicated on
the 545 Model 1 withoutrestriction.
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