CONTROL PANEL
X. BRUS~ESJ
49.29 X Figure 6-14.-Type 557 interpreter
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Chapter 6-INTERPRETERS
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Line 1 557 ALPHABETIC INTERPRETER
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Line 11 557 ALPHABETIC INTERPRETER
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Line 13 557 ALPHABETIC INTERPRETER
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Line 15 557 ALPHABETIC INTERPRETER
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Line 16
Line 17 557 ALPHABETIC INTERPRETER
Line 18 866666666666666666666611
Line 19 557 ALPHABETIC INTERPRETER
Line 20 '7D770777777777777077777
Line 21 557 ALPHABETIC INTERPRETER
Line 22 &88888088888888888888 •••
Line 23 ' 557
Line 2" ALPHABETIC INTERPRETER
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Une 25 557 ALPHABETIC INTERPRETER p • • • ~RaMU.U •• M"nnu~~»~n.
49.258X Figure 6-15.-Interpreted card.
When posting ledger cards, the selective line printing device automatically locates the next available posting line, and prints the data.
4. INTERPRET EMITTER~ This device emits an impulse for each character which can be punched in the card. This makes it possible to print emitted'characters in addition to char-acters punched in the card ..
5. PROOF. Data that is printed on the card is checked by this device to make sure. that the proper characters are printed. Print sup-pression, repeat print operations, and type wheel alignments can also be cheCked. If an error is indicated, card feeding stops.
6. CARD COUNTER. All cards can be selected by a manually operated switch, located on the front of the machine. This makes it pos-sible to interpret two types of cards in different ways while using the same control panel.
8. PRESENSING. This device consists of a set . of control X hubs, which can be used to
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control selectors for selecting alphabetic data in the same manner as the type 548. It can also be used to control the repeat print device to allow printing from a master card onto the following detail cardso
OPERATING FEATURES
The type 557 interpreter reads data punched in a card and prints that data across the card across the card by setting the printing position dial to the desired print line. Cards must be automatically into the stacker.
•
MACHINE ACCOUNTANT 3 & 2 Printing Position Dial
The printing position dial can be manually set to cause printing on one of 25 printing lineso These lines are located from the 12 to the 9 edge of the card. When the dial is set on position 1, printing occurs above the 12 punching position. When set on pOSition 2, printing occurs at the 12 position. When set on position 3, printing occurs between the 12 and 11 positions. Each succeeding position causes printing to occur lower on the card, with line 25 printing below the 9 position.
Hopper
The capacity of the card hopper is approxi-mately 800 cards. The cards must be placed in the hopper FACE DOWN, with the 12 edge toward the throat of the hopper. Therefore, you must work from the front of a file of cards toward the back in order to keep the cards in their original sequence.
Notice the difference between card feeding in the type 557 and other interpreters. This is the only interpreter which requires that cards be fed face down, and from the front of the file.
stacker
The capacity of the stacl~er is approximately 900 cards. When the stacker becomes filled, a stacker stop switch causes the machine to stop.
After removing the interpreted cards, the opera-tion can be resumed by depreSSing the start key. Cards stack in their original sequence.
Print Unit
The printing mechanism consists of 60 typewheels. Each typewheel, as shown in figure 6-16, can print numerical, alphabetic, and special character information. Printing of special characters that have more than one numerical punch, such as the dollar symbol, requires a special charaCter printing device.
PRINCIPLES OF CONTROL PANEL WIRING
Operations which may be performed are directed by control panel wiring. All standard hubs are located in the left section of the double section panel, while the right section is composed
•
IBM 557 INTERPRETER TYPEWHEEl SCHEMATIC
No Setup
49030X Figure 6-16.-Type 557 type wheel schematic.
entirely of· hubs for special deVices, such as proofreading, proof entry, . and the digit emitter.
Since this chapter discusses only those features which are standard only the left section of the control panel is shown in figure 6-17.
Normal Printing
There are 80 pairs of interpret reading hubs on the control panel, representing the 80 columns of the card. For normal printing, they are wired to the 60 print entry 1 hubs representing the 60 typewheels. The interpret reading hubs may be wired to any of the print 'entry 1 hubs to cause data to be printed in any
desired sequence across the card.
Zero Print Control
Wiring from interpret reading to print entry causes the typewheels to be positioned so that the punches which have been read from a card can be printed. Before a typewheel can actually print, an impulse must reach the print fuse and energize a print magnet. When the print magnet for a typewheel has been energized, a hammer will fire and press the card against the character on the typewheel to cause printing.
Impulses originating from a Significant digit have a path to the fuse and will automatically energize a print magnet. However, zeros and
Chapter 6-INTERPRETERS
10 II 12 13 14 15 !6 17 18 19 20 21 22
I I I I I I I I I I I I I I I I I I I I
25 30 35 40
I I I I I I I I I I I I I I I I I I I 1
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25 30 35
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 AH
0 0 0 0 0 0 0 0 0 0 0 0 0 f"') 0 0 0 0 0 AJ
45 50 55
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 AK
10 II 12 13 14 15 16 17 18 19 20 21 22
49.31 Figure 6-17.-Left section of type 557 control panel.
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MACHINE ACCOUNTANT 3 & 2 lower row, numbered from 1 to 60, are diagonal-ly connected internaldiagonal-ly to the hubs in the upper row as illustrated by the dotted lines in figure 6-18. The first hub in the upper row, directly above the lower hub of the first zero print control position, represents the upper hub of zero print control position 60.
When a Significant digit reaches a print magnet, an internal machine impulse becomes available at the upper zero print control hub of that particular typewheel. This impulse can be used to energize the print magnet of the typewheel to the right, if that typewheel is to print a zero. This is accomplished by jack-plugging the upper zero print control hub of the position containing the significant digit to the lower hub of the position to the right. The internal machine impulse is then allowed to reach the fuse and energizes the print magnet of the pOSition that is to print a zero. Addi-tional zeros to the right can be printed by jackplugging more zero print control hubs.
If all zero print control hubs for a field left of a significant digit, ten consecutive zeros can be carried or controlled to print.
~;---, Figure 6-18.- Zero print control hubs.
Special characters which are actuated by wired from interpret reading.
Column Splits
If a numerical column, punched with a sig-nificant digit and a control X, is wired directly to a print entry, an alphabetic character will be printed. This can be prevented by wiring that particular column through a column split. The column split device operates on the same prin-ciple as the X eliminator in the type 548. Any
The column containing the· control punch is wired from interpret reading directly to the must always be wired for all operations except when suppressing printing of NX cards.
Wiring
Figure 6-19 illustrates the wiring necessary for normal printing, zero print control, X elimi-nation, and print suppression.
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1. Columns 1-~, an alphabetic field, are wired to typewhee1s 4-7.
Chapter 6- INTERPRETERS
Figure 6-19.-Normal printing, zero print control, X elimination, and print suppress.
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49.33
MACHINE ACCOUNTANT 3 & 2
Figure 6-20.-Numeric class selection and X elimination.
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Chapter 6-INTERPRETERS wired to typewheels 15-18 without printing zeros to the left of the high order significant digit.
4. Columns 15-18, an amount field, are printed in typewheels 22-25 with zero balances printed as all zeros, and with the credit X
selection and splitting columns. When used as a selector, they operate on the same principle presensing (Control X Read) is installed.
Four 5-position selectors are standard.
Each selector has two separate pickups, which selector transfers immediately and remains transferred for the duration of that card cycle.
CARD COLUMN-One of the 80 vertical divi-sions of a card.
CARD COUNTER-A device that counts each card as it is processed.
COLUMN SPLIT-Comparable 11-12 impulses that enter the common hubs, and the transferred side becomes the exist for any 0-9 impulses that enter the common hubs.
The Digit Pickup hubs are normally wired from interpret reading. Since these hubs accept any impulse 12 through 9, a column split should be used to select only the 11-12 control punch to be used.
The wiring diagram in figure 6-20 shows the wiring for numerical class selection, and for X elimination using a selector,as a column split.
1. Selector 1 is picked up from the X-O impulses to become available out of the normal side of the selector, and the zero through 9 impulses out of the transferred side.
2. Column 62 is wired through the trans-ferred side of selector 1, to print only the numerical punch in that column.
3. Selector 2 is picked up from an X in column 39, which is wired through a column split to eliminate digit punches in that column.
4. Columns 42-45 are wired through selec-tor 2 so that printing Qccurs at location A for X cards and at location B for NX cards.
5. All zeros are controlled to print.
6. The suppress X switch is wired ON to allow interpreting of all cards. If it were not wired, no cards would be interpreted.
DETAIL CARD-A term applied to a card to distinguish it from a master or heading card.
EMITTER-A device that emits an impulse for eachpunchable character.
INTERPRETER-A machine that will transcribe characters from punched holeso
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MACHINE ACCOUNTANT 3 & 2 INTERPRETING- Printing information from
punched holes on the same card in which it is punched.
MACHINE ERROR-A deviation from correct-ness in data resulting from an equipment failure.
MASTER CARD-The first card of a group containing fixed or indicative information for that group.
PRESENSING-A device to read control punches to control repeat print and selectors for alphabetic selection.
PRINT ENTRY -Entries for impulses to activate the typebars and printwheels.
PRINT SUPPRESS-Allow suppression of print-ing for either X or NX cards.
PRINT WHEELS-Wheels embossed with letters, digits, and special characters for printing on forms and cards.
PRINTING POSITION KNOB-A devi'ce used for controlling the printing lines on a card.
PROOF-The editing feature of an interpreter for checking the printing operation.
PROOF INDICATOR-A device which displays or announces that an error has been made or a failure has occurredo
REPEAT PRINT-Information read from a mas-ter card and printed on any number of following detail cardso
RUNOUT-Moving the last card in the machine to the stacker.
SELECTIVE LINE PRINTING-More than one print line with the option of being selectable.
SELECTIVE STACKERS-More than one stacker with the option to select the desired one.
SELECTOR-A device capable of having two paths.
STACKER-A receptacle for cards that have passed through the machine.
TRANSCRIBING-Printing information punched in one card onto another card.
X BRUSHES-Adjustable reading brushes for reading control punches. . . X ELIMINATION-Elimination of 11 an.d 12
zones of a given column.
X ELIMINA TOR-A device for separating the reading between 0 and 11 time of any given column.
X ELIMINATOR SWITCH-A switch used to control the off-on feature of the X eliminator device.
X PANEL-A device whereby a reading'by the X brushes can be made available on the control panel.
ZERO PRINT CONTROL- Provides electrical control of the printing of zeros and characters represented by only an 11 or 12 punch.