IBM 3741 Data Station, Reference Manual

Page 1: ...Systems GA21 9183 4 IBM 3741 Data Station Reference Manual...

Page 2: ...manual and will be reported in subsequent revisions or technical newsletters Requests for copies of IBM publications should be made to your IBM representative or to the IBM branch office serving your...

Page 3: ...the following chapters and a pendixes Chapter 1 IBM 3741 Data Station provides an over view of the 3741 Chapter 2 Operation Modes and Considerations pro vides information about buffers modes of operat...

Page 4: ...familiar with the con tents of the following manuals IBM 3740 Data Entry System System Summary and Installation Planning GA21 9152 IBM 3741 Data Station Operator s Guide GA21 9131 The IBM Diskette Ge...

Page 5: ...41 Search Mode S 15 Read Out Reset Field Totals Fields 41 Field Totals Mode F 18 Control Statements 42 Hexadecimal Data 18 Control Statement Format Character Description 43 Multipunch Operations 19 Ex...

Page 6: ...76 76 76 77 80 81 82 89 89 89 89 90 91 92 92 92 94 95 95 95 95 IBM 3715 Printer 96 IBM 3715 Forms Stand Feature 96 IBM 3717 Printer 97 IBM 3717 Forms Stand Feature 97 Functions 97 Printer Modes 97 Pr...

Page 7: ...er Display Unit Control Unit Figure 1 IBM 3741 Data Station Chapter 1 IBM 3741 Data Statio Processed by the 3741 Programmable Work Station Mod els 3 or 4 Used with the IBM 3540 Diskette Input Output U...

Page 8: ...e 5 display either data or program information depending upon the display mode selected The last 30 positions of line 5 and 6 are used for the operator guidance feature A cursor underscore is used to...

Page 9: ...one side of the diskette Figure 4 shows the IBM diskette For a complete descrip tion of the IBM diskette its layout care storage and han dling see The IBM Diskette General Information Manual GA21 918...

Page 10: ...Feature Disk copy Standard on second disk Keylock Feature on Model 2 or 4 Operator identification Feature on Model 2 or 4 card reader Proof keyboard Feature Record insert Feature Not under ACL program...

Page 11: ...program buffers will also contain some field totals control statements that are requ ired in order to perform the field totals operations See Chapter 6 Offline Field Totals for more information Progra...

Page 12: ...s on the index track The read index mode allows records on the index track representing the volume label the data set labels and other system data to be displayed on the display screen These records c...

Page 13: ...e developed errors in use These seven sectors are not usually used or modi fied by the operator The remaining sectors 08 26 may contain data set labels which are used to define the data sets resident...

Page 14: ...number must be in positions 29 and 30 a 0 must always be in posi tion 31 and the sector number must be in positions 32 and 33 The BOE address must be 01001 or greater 8 End of Extent Field Positions...

Page 15: ...ration Date Field Positions 67 72 The expiration date field an optional field is used to record the date the data set expires The format of the expiration date is the same as for the creation date If...

Page 16: ...both reading and writing Must be blank A blank indicates the data set can be used for data inter change A blank in this field indicates a data set contained on one diskette a C in dicates a data set...

Page 17: ...a set optional field and other information about the data set When a diskette is inserted into the disk drive the data set label at sector 08 on the index track is always displayed first If there are...

Page 18: ...sed the record is always written on the disk exactly as the operator sees it on the display no automatic duplicate or skip fields are executed The normal record advance may cause changes in automatic...

Page 19: ...buffer If data was changed the record is written to disk Figure 10 Data Flow for Update Mode Verify Mode V Use the verify mode to check the accuracy of data records already on the disk and to make cor...

Page 20: ...corresponding characters in the previous record buffer If one of the char acters in the record disagrees with the corresponding char acter in the previous record buffer a verify mismatch error is pos...

Page 21: ...REC ADV causes a record advance function to occur without verification of the record If a correction had been made to the record and the cursor is positioned at the first manual position of the recor...

Page 22: ...tion M error The search stops on the record address specified and the record at the specified address is displayed The current record buffer and the previous record buffer contain the displayed record...

Page 23: ...ed and compares the mask to records in the data set searching for the data that matches the mask Remember that the blank positions in the mask identify the positions of the record that will not be che...

Page 24: ...ugh 5 to be a match if the machine encountered SM ITHSON before it encountered SMITH If the machine stops the search with the wrong record dis played the operator can backspace a few records to see if...

Page 25: ...ed Add these values together to get the second hex digit Only add those values to gether for the Iines display ed Example Assume the display looks like this 8 _ 4 The first hex digit is 8 4 1 0 and th...

Page 26: ...aracter is changed to a D in the current record buffer and the remainder of the content in the current record buffer remains unchanged Verify Mode When selecting verify mode from the index track the f...

Page 27: ...h for the 0 when records will be inserted at some other time Record Insert Mode Characteristics Enter Mode No records are moved in this mode but it allows you to create a space within your data set fo...

Page 28: ...n the numeric shift key and press COPY This step copies the remainder of the records still on disk 2 onto disk 1 11 When the copy is complete press FUNCT SEL lower and RETURN TO INDEX 22 DATA RECOVERY...

Page 29: ...t verified For all other modes the record read prior to the no record found error is displayed When the no record found error persists perform the appropriate copy operation to copy the data The IBM 3...

Page 30: ...ful or if the record cannot be added to the end of the data set the copy operation can be used to copy the surrounding data and then manually key in the record Be sure to write the track and sector ad...

Page 31: ...nd the end of program character Chapter 3 Program Information A field definition character defines the type of field and indicates where each field in the record begins The field definition character...

Page 32: ...ly skips Automatically skips Bypass numeric field during verify mode only Bypass alphabetic field during verify mode only Bypass right adjust numeric field with zero fill characters during verify mode...

Page 33: ...d For example assume that there is a right adjust field that is 10 positions long and 12345 is keyed into the field Before the right adjust key is pressed the field would look like this DATA 12345 Aft...

Page 34: ...fields for modulus 10 and modulus 11 respectively In verify mode or field correct mode these fields are handled as bypass fields with only the self check computation being performed when the self chec...

Page 35: ...ntent keys in the word Payroll then presses REC ADV This causes the data station to search for the Payroll header record The operator then presses REC ADV selects program load and loads as many progra...

Page 36: ...red Program chaining provides the ability to automa tically select programs when the format changes from one record to the next Program chaining frees the operator from manually selecting a new progra...

Page 37: ...e now that record advance has occurred and program buffer 2 is selected Program buffer 2 contains the follow ing program for controlling the format of the data record to be entered N A R D 3 The 3 is...

Page 38: ...nt as one character If no prompting message for a field is desired enter only an asterisk for the field The asterisk is needed even though no prompting message is displayed in order to keep the prompt...

Page 39: ...ADDRESS IIIIIIIIIIIIIIIIIIII The operator would now key in the address of the company This process will continue until the end of the record is reached When record advance is pressed the display chan...

Page 40: ...counts the number of records processed in the enter update and verify modes Record advances in update mode are not counted unless data has been en tered into the current record buffer Record advances...

Page 41: ...nter mode TRACK TO RECORD CONVERSION TABLE Figure 16 is a track to record conversion table It is pro vided as a quick method for determining the number of records keyed The conversion table is an accu...

Page 42: ...online field totals the accumulators are reset to zero only when the power is turned on when a reset is accom plished by pressing the R key with field totals displayed or when entering a field in a r...

Page 43: ...E f T is field in the prog This field in the program ram indicates that indicates that field totals field totals accumulator accumulator 3 will be read 1 will be read out into out into the correspondi...

Page 44: ...field total operation record advance to the record that contains the read out reset field select the correct program buffer and field ad vance over the read out reset field In update mode or when E R...

Page 45: ...mmary record N B8 E Auto Balance Example The online field totals feature can be used to find errors when an accumulated total does not match a precomputed balance sheet total Errors in the records can...

Page 46: ...ss each record A description of how to prepare programs and control statements for field totals operations is provided later in this chapter 40 When the field totals operation is initiated the accumu...

Page 47: ...be accumulated into accumulator 1 accumulated into accumu lator 2 Figure 20 Example of a Program Containing Field Totals Fields A field may be accumulated into more than one field totals accumulator b...

Page 48: ...uses a particular program to be selected for processing the record A control statement Must start with a character this is the only means by which the field totals program can identify a control state...

Page 49: ...trol statements can be continued to a higher numbered buffer To indicate that a control statement is continued in a higher numbered buffer use the after the last position of the control statement in t...

Page 50: ...The position being checked r must not have any of the characters specified by m 44 in order to satisfy the control statement period End of Control Statement The period indicates the end of the control...

Page 51: ...1010NV Control statement separator This is a multiple control statement The field totals program will first check to see if the data record has an A or B in position 2 If there is an A or B in positi...

Page 52: ...r different programs are required to do these operations This example used program buffers 1 4 for these programs Program buffer 1 contains the program to add the field in positions 30 35 of the data...

Page 53: ...W 052W 053W Continued from program buffer 5 Selects program buffer 3 if positions fiO 55 are blank The represents a blank space This control statement is continued in program buffer 7 Program Buffer 7...

Page 54: ...required to process the job in offline field totals mode 48 The control statement would be 1020W1 2020W2 3020W3 v t This control state This control state This control state ment will select ment will...

Page 55: ...35 The address is posted or changed only when disk 2 operations are per formed Insertion and removal of disk 2 are not monitored by the machine and therefore inserting a disk does not post a disk 2 a...

Page 56: ...disk by adding data from disk 2 to the end of the data already recorded on disk 1 A sequence of such copies can involve loading several disks into the disk 2 drive and pooling the work of several oper...

Page 57: ...rough 4 and 6 contain 80 blanks each Sector 5 contains ERMAP follow ed by 75 blank characters If one or two bad tracks were specified the number of the first bad track will be in posi tions 7 and 8 of...

Page 58: ...2 3 17 19 12 12 23 8 18 3 9 24 4 13 13 25 11 22 8 15 4 12 14 14 2 14 26 13 21 11 20 15 15 4 17 3 18 4 18 5 16 16 6 20 7 23 10 25 13 17 17 8 23 11 4 16 5 21 18 18 10 26 15 9 22 12 6 19 19 12 3 19 14 5...

Page 59: ...es the type of error encountered I Missing ID field C CRC error diskette data error S Deleted record Only 10 tracks with errors can be displayed the first error encountered in a track is displayed If...

Page 60: ...tracks tracks are on the disk Write Disk error occurred error while initializing the disk Sector One of the normally not deleted sectors 9 26 deleted on the index track was not deleted Sequence numbe...

Page 61: ...UTO DUP SKIP switch to backspace and correct the self check number Blank fields check correctly in the enter mode but cause a C error in verify or field correct mode This allows a self check field to...

Page 62: ...git position of the basic number These weighting factors are 2 7 2 7 etc starting with the units position of the number excluding the self check digit and progressing toward the high order digH Multip...

Page 63: ...channels or equivalent privately owned facilities at 600 1200 or 2400 bps Note The grade of channel and type of channel condi tioning must be as specified by the modem supplier Chapter 10 Communicati...

Page 64: ...6 1 2 tape f LJ IBM3747 I Data Converter f ___ I IDiskette Data Station Data Station f 6 riiiiiiiii 1_ Data Station mskette IBM 3747 Data Converter 1 2it tape I Processing Unit Data Station Diskette 6...

Page 65: ...ts of dedicated private or leased communication lines Nonswitched point to point networks connect the 3741 Model 2 or 4 with remote terminals or processing units Nonswitched multipoint networks connec...

Page 66: ...ber of the remote terminal or processing unit 3741 Model 2 or 4 Modem Normally the station placing the call should bid the line On switched lines and if the operator will be dialing the call the M key...

Page 67: ...information is available from your IBM representative FEATURES The following features are available for the 3741 Models 2 and 4 Synchronous Clock The synchronous clock feature provides business machi...

Page 68: ...ces match and the response is positive the terminal prepares to transmit or receive data blocks If the sequences match and the response is negative the terminal disconnects with an X error If the sequ...

Page 69: ...512 byte buffer Note Machines without the expanded communications feature cannot receive selected fields A transmit selected fields program is defined as follows Position 1 of the program must have a...

Page 70: ...ROCHESTER MN Trans Data OOl ROCHESTER MN 124 OPERATION MODE BUFFERS USED Transmit T P B F or D J or K F 2 3 4 5 6 and 7 Receive R B D or K I 28 data characters F 2and 6 256 data characters F 2 5 6 384...

Page 71: ...ta and inserting constants Receive Data l600 1ROCHESTER16MN124 Unattended Printing The expanded communications feature enables you to have unattended printing after a receive operation if your 3741 Mo...

Page 72: ...control Each communications program that is loaded into a program buffer applies only to one data set For example if program buffers 8 9 and A are loaded as follows 8 9 A III It 16 16EF 16T 2 transmit...

Page 73: ...T T 8 9 A 8 9 T A transmit selected fields or records program R A receive data and insert constants program T T 9 A Inquiry This function of the Expanded Communication s Multipoint Data Link Control...

Page 74: ...egrated Communications Adapter IBM System 360 via 68 IBM 2701 Data Adapter Unit IBM 2703 Transmission Control Unit IBM 3704 and IBM 3705 Communications Adapter in emulator mode only In BTAM and TeAM t...

Page 75: ...s T as it would if a line check remote abort or message aborted error occurred the 3741 will answer a telephone call and will retransmit the data beginning at the same place as the original call Howev...

Page 76: ...dicates an incompleted transparent trans mission PT indicates a completed transparent transmission Transmit Receive Mode On Disk 1 On Disk 2 Transmitting Receiving Transmitting Receiving Data set will...

Page 77: ...de 8C f I g cc Occ 19 Data Set Labels I ____ Track 00 Sectors 08 26 Label Address 00008 Label Status HDR1 Beginning of Extent BOE 01001 End of Data EOD 36010 End of Extent EOE 50026 Figure 35 Transmit...

Page 78: ...01001 on second disk Figure 37 Generated Extents while in Receive Mode 72 1 2 If the same number of data sets are received during each communication set up the exact number of data set labels as requ...

Page 79: ...LE STX in non transparent or OLE STX when not immediately preceded by a OLE in trans parent text will be recognized as control characters and will be deleted from the text Other BSC products may not p...

Page 80: ...the display s status line to indicate the transmit receive mode Disk Capacity I 1 1898 Records l r w __ EOE 19 Data Set Labels Y I Track 00 Sectors 08 26 Label Add ress 00008 Label Status HDR 1 Begin...

Page 81: ...rred during the transmission portion of this mode the 3741 will indicate a BI in the mode indicator position of the display s status line If a disk error or a disk full condition occurs during the rec...

Page 82: ...ol characters are read from disk a trans parency error will result The IRS or IFS character can be transmitted in T B P or 0 mode The operator identification card data is transmitted as a separate blo...

Page 83: ...d selects the transmit receive communications mode Note To receive data on disk 1 the data set label follow ing the last transmitted data set must have a B bypass in position 41 in order to receive da...

Page 84: ...set up via bypass status to be used for receiving these data sets 78 _ Key Entry Programs will not be transmitted Key Entry Job 1 These two data sets Key En ry Job 2 will be transmitted Disk Capacity...

Page 85: ...rs 08 26 Label Address Label Status Beginning of Extent BOE End of Data EOO End of Extent EOE w 0 co 00008 HDR1 with bypass 01001 01020 01026 ___ Key Entry Job 1 Key Entry Job 2 o w o 0 w co 00009 000...

Page 86: ...at the BOE address of the data set If inquiry mode was selected from update mode the inquiry message is written at the EOD address of the data set 80 Responses to the inquiry record are written on di...

Page 87: ...Data Yes N A N A Yes Yes N A Yes Yes Record Length 128 N A N A 128 128 N A 128 128 Block Length Excluding IRS Characters 512 N A N A 512 512 N A 512 512 Records Per Block 1 N A N A 1 1 N A 1 1 Selecte...

Page 88: ...mit selected fields or records and receive and insert selected fields operations Also ensure that un used buffers are cleared of control pro grams I Load Diskette s Position to first data set label i...

Page 89: ...want the unprintable character error posted or to NUMBERS ONLY if you want the unprintable character error posted i YES I Press E Switched or nonswitched I I Switched Nonswitched NO 6 selecttde T P B...

Page 90: ...gs ________ Select mode see Note 1 ________ T P B D R J K I Was R mode selected NO I Operator ID feature installed i i NO YES I Operator ID feature to be used I I NO I Press REC ADV YES YES I Insert c...

Page 91: ...and I YES I IBM 3872 or IBM 1200 bps integrated modem i I IBi72 IBM 1200 bps integrated modem I Dial or answer Answer I Manual answer or auto answer I Manual I Hang up hand set See Note 2 I Procedure...

Page 92: ...complete i Answer I Manual Answer or Auto Answer I I Manual I Set TALK DATA switch to TALK and wait for call I Answer phone when it rings When ready raise data key and TALK DATA switch to DATA I Do n...

Page 93: ...atar keys inquiry Operator p sses REC ADV or REC message FUNCT SEL BKSP to get to desired record and upper and I blanks any modifies record to form new inquiry previous data being message if requir d...

Page 94: ...Reception Complete________________ I J J J J Reception Incomplete _________ B B B B B Card Reader ID Decision Required_______________ I Note During BSC operations line 6 of the CRT displays diagnosti...

Page 95: ...character and then follows the response with an EOT This error also occurs when the 3741 with expanded communications is in the J or K mode and an IRS or IFS character is read from disk The 3741 send...

Page 96: ...is selected from update mode and the record length of the receive data and insert constants program does not match the record length of the current data set Transmit mode T P J or I is selected after...

Page 97: ...on the display s status line has the following meanings Modes T B P 0 J K TT PT JT R BT OT KT R BT OT KT with remote abort error condition RJ BJ OJ KJ with disk full error R BT OT KT Indicates Address...

Page 98: ...e following conditions Data terminal 3741 ready DTR Data set modem ready DSR Request to send RTS 92 Clear to send CTS Number of incorrect CRC s in receive mode Number of NAK s sent in transmit mode Nu...

Page 99: ...cords in the data set to determine the record location at the time of the error Then through mutual agreement with the far end location either through earlier agreed upon procedures or by direct voice...

Page 100: ...ent throughput of the 2400 bps four wire line Records Minute Characters 2400 bps 2000 bps 1200 bps Per Record Nonswitched Switched Switched Nonswitched Switched Transmit Receive Transmit or Transmit o...

Page 101: ...e carriage return function is overlapped with the vertical skip function The print head traverses across the print line at 4 inches 101 6 mm per second 40 CPS independent of print content The rate is...

Page 102: ...e for individual forms and from 3 to 15 inches 76 2 to 381 0 mm wide for continuous forms A maximum print rate of 40 characters per second on the Model 1 and a maximum print rate of 80 characters per...

Page 103: ...e 3717 forms stand or its equivalent must be used and grounded through the grounding clips on the 3717 FUNCTIONS Printer Modes The 3713 3715 and 3717 can print in four different modes each with or wit...

Page 104: ...rts with the currently displayed record or BOE record if printing operation is selected from read index mode and prints all records that match the mask When EOD is reached the 3741 returns to read ind...

Page 105: ...ead into current record buffer Program buffer A contains the horizontal tab stop vertical skip stop and printer format program selection characters See Printer Format Program Select HorizontalTab Vert...

Page 106: ...t not including the tab stop posi tion indicated in program buffer A The number preceding the T control character determines the number of tabs that are to be executed For example if a 2 is in front o...

Page 107: ...mber is a digit number in the form TTSS where TT three digit number with leading zeros is the track number and SS is the sector when required The numbering is 001 number 002 254 255 000 001 xl Insert...

Page 108: ...the vertical skip stop character is used to specify the skip to positions 102 Printer Format Program Select Character Meaning colon The colon means the printer format program is to be selected by the...

Page 109: ...When the printer prints a line and a carriage return occurs a counter increments to the next position in program buffer A Therefore the number of lines that are skipped when a skip is initiated is th...

Page 110: ...amine position 1 and branch to that program buffer program buffer 1 for printer format instructions Figure 58 provides a step by step description of the formatting of the first record Program 2 3 4 5...

Page 111: ...cord type character Tab 2 times Print name 24 character field Carriage return line feed Tab 2 times Print address 24 character field Carriage return line feed Tab 2 times Print city state 24 character...

Page 112: ...NK GENERATOR PREVIOUS BALANCES BAR I SA WEST FRONT STREET WORLD WIDE CUST OWE NO 219614 QUANTITY 2 1 6 10 3 2 Worldwide Distribution of Electronic Parts and Instruments INVOICE NUMBER 40280 UNIT PRICE...

Page 113: ...informa tion in program buffer 9 is displaced when printing Printer Instruction Set Figure 61 shows the printer for mat control characters that can be recognized in the data stream Figure 62 shows an...

Page 114: ...Skip to the next code 4 in program A Skip to the next code 5 in program A Skip to the next code 6 in program A Skip to the next code 7 in program A Skip to the next code 8 in program A Skip to the ne...

Page 115: ...AVE MINNEAPOLIS MINN ELECTRIC INt 6553 WEST LAKE MINNETONKA MINN p t 5 5 5 55 555 555 p pq Io 0014 614014 110 0 014 0 POST 219614 40280r 06 07 72P245 2890 INSULATOR 2 73 1 46 917 0214 RELAY 1 12 30 11...

Page 116: ...ng off or by an end of forms warning o 1 3 Indicates an illegal character was encountered For a description of U errors when the 3741 has a 3717 printer attached see the error codes in the IBM 3741 Da...

Page 117: ...on the report By the time the field is edited it may contain more than seven characters Edit Character 9 z B y Meaning Decimal digit A decimal digit is accepted for output in the corresponding positi...

Page 118: ...sition or floating placed to the left of the most significant digit if the field is positive To insert the plus sign at a fixed position place one plus sign at the desired position To insert a plus si...

Page 119: ...34 567 89 123456 99 99 99 12 34 56 123456 99 9 99 9 12 3 45 6 001234 ZZ ZZ ZZ 1 1 1 12 34 000012 ZZ ZZ ZZ 1 1 1 1 1 1 12 000000 ZZ ZZ ZZ 1 l ll l1 l l1 1 l l Input Field Edit Word Output Field 000000...

Page 120: ...th four blanks 38 means load print buffer with three characters from the record and suppress leading zeros 001 o 6X means load print buffer with six blanks o 99 edit word to punctuate price field when...

Page 121: ...record and suppress leading zeros 001 e 6X means load print buffer with six blanks o 1 Z ZZZ DOLLARS 6AND 6 9 9 6CENTS 1 Edit word to punctuate price field and insert constants o 2X means load print b...

Page 122: ...rrangement on standard keyboard Figure 68 shows the numeric keys on a proof keyboard and the numeric keys on a standard keyboard In alpha shift both the standard keyboard and the proof keyboard oper a...

Page 123: ...the ON position the punch operation is continuous 2 To cancel punch operations press ALPHA SHIFT NUM SHI FT and RESET simultaneously Chapter 13 Data Recorder Attachment Felture Punch Record Mode The...

Page 124: ...arch address operation is limited to disk drive 1 READ OPERATIONS Read Modes The data recorders can read in two modes with or without format control Note To cancel read operations press ALPHA SHIFT NU...

Page 125: ...rs Three options are available when an A6 error occurs Option 1 If you want to continue reading cards on onto another disk press both ALPHA SH IFT and NUM SHIFT with RESET then change position 45 of t...

Page 126: ...nched Note After the read a card or punch a record operation is complete the selected key entry program is again active After all other card read or punch operations are complete the program level goe...

Page 127: ...ond buffer position 128 Control Character Meaning xY Skips characters from the input buffer Skips over with no action the number of characters in the input buffer specified by the number preceding the...

Page 128: ...ng Punch Verify Punch Terminal Manual Terminal Figure 69 5496 Data Recorder Switch Positions Switch Required Position Print On To allow printing Off No printing Punch Verify Punch Record Advance Card...

Page 129: ...formatted using program level A and the appropriate program level Data Recorder Storage Area Output Punched Card Input Read Card Data Recorder Storage Area Program Level A Program Level 1 8 Input Buff...

Page 130: ...ed data is returned to cur rent record buffer Note REC ADV must be pressed to write the data to disk Figure 73 Data Flow When Formatting Current Record Buffer Format Control Examples Example 1 Manual...

Page 131: ...r that operation Following is an example of an input record and the formatted output record 1111111111222222222233333 3333344444444445555555555666666666677777777778 Column number 123456789012345678901...

Page 132: ...level 1 f Position one In this example when the operator initiates a read or punch operation position 22 of the input record defines the pro gram level used for formatting Following is an example of...

Page 133: ...ition one Load 8 characters in to the output buffer Read or punch a card and terminate the format N 8A C 9Y 8A C 18Y 8A Q Program level selected t Position one If the operator initiates a punch operat...

Page 134: ...18 output characters from position one Load 8 characters in to the output buffer 1 Read or punch a card and terminate the format N 8A C 9X 8A C 18X 8A Q Program level selected t Position one If the op...

Page 135: ...r 1 Load 10 characters to the output buffer j Terminate the format a card is not read or punched r 11 Y1 OA20F1 OAQ Position one Following is an example of a record in the current record buffer that i...

Page 136: ...enabled the 3741 can be used for basic data entry jobs Operations are terminated in three ways 1 130 Manual At a point in the transfer operation when operator action is expected and the keyboard is en...

Page 137: ...ill wait for an operator response Holding ALPHA SH IFT and pressing RESET holding NUM SHIFT and pressing RESET or pressing RESET can be used to clear the error and will leave the 3741 online allowing...

Page 138: ...he special EOO and EOJ in dicators can be whatever valid character sequence you choose When writing and an EOO is encountered one more record will be transferred containing in this case the XY charact...

Page 139: ...e 1 is automatic if these or 2 to be sent as part of the drives are made ready at the proper times same data set 4 1 or 2 Manual FUNCT SEL Multiple data sets processed Multiple data sets are processed...

Page 140: ...le and some are not For a complete listing of the errors and a recovery procedure re fer to the IBM 3741 Data Station Operator s Guide GA21 9131 System Channel Errors System channel errors are not rec...

Page 141: ...k OPERATION NUMBER OF NORMAL SECTOR ALTERNATE SECTOR RECORDS SEQUENCE SEQUENCE DISK 1 DISK2 DISK 1 DISK 2 Search end 1898 assume of data EOD is 74001 5 sec 5 sec 5 sec 5 sec 949 assume EOD is 37014 3...

Page 142: ...0 4 25 0 5 9 65 11 0 5 9 A5 11 0 5 26 0 6 9 66 11 0 6 9 A6 11 0 6 27 0 7 9 67 11 0 7 9 A7 11 0 7 28 0 8 9 68 11 0 8 9 A8 11 0 8 29 0 1 8 9 69 0 1 8 A9 11 0 9 2A 0 2 8 9 6A 12 11 AA 11 0 2 8 28 0 3 8...

Page 143: ...9 12 42 0 6 9 12 46 2 9 12 02 6 9 12 06 0 2 11 A2 0 6 11 A6 2 11 02 6 11 06 0 2 11 12 B2 0 6 11 12 B6 2 11 12 92 6 11 12 96 0 2 12 82 0 6 12 86 2 12 C2 6 12 C6 0 3 E3 0 7 E7 3 F3 7 F7 0 3 8 6B 0 7 8 6...

Page 144: ...ield The field being processed by the operator 138 Cursor The underscore character _ on the display screen that indicates where the next character will be entered referred to as cursor position Data I...

Page 145: ...atic program selection Program code The characters that make up a program Program field A field containing program code characters to specify the type of field program shift and length of the field Pr...

Page 146: ...cations teleprocessing CE status line 86 88 92 140 data set label fields beginning of extent 72 end of data 72 73 end of extent 72 73 multivolume indicator 73 disk errors 90 electrical circuits 61 BSC...

Page 147: ...D 45 program buffer to be selected 43 statement separator 44 three digit position number 43 control statements 42 conversion table track to record 35 copy all image copy or part of a data set 50 all i...

Page 148: ...DISPLAY PROD STAT key 35 DISPLAY PROG key 30 142 24 display screen 2 display verify mode 14 displaying a program 30 field totals 36 40 hexadecimal data 19 offline field total accumulators 40 producti...

Page 149: ...end of data 9 10 end of extent 8 10 expiration date 9 10 field continuation 25 26 header 1 8 9 interchange type manual alphabetic 9 10 26 27 fields continued manual numeric 26 27 multivolume indicator...

Page 150: ...d 9 10 I O adapter 130 error recovery procedure 134 file transfer 130 mode summary 133 mode 1 5 131 system channel errors 134 keyboard 2 keyboard proof 116 keylock feature 62 keystroke counter 34 144...

Page 151: ...r see also 3713 printer 3715 printer or 3717 printer control characters data stream 107 detailed description 95 editing 111 error conditions 110 format control characters 100 format program selection...

Page 152: ...d insert mode characteristics enter mode 21 read index mode 21 search mode 21 update mode 21 verify mode 21 record insertion 20 record length description 8 72 field 8 9 146 record merge 49 record mode...

Page 153: ...n data call 89 inquiry mode 89 line 89 operator initiated 90 three digit position number field totals 43 throughp t communications 94 129 card data recorder 117 3713 printer 95 3715 printer 96 3717 pr...

Page 154: ...0 write error 24 54 write protect BSe considerations 70 write protect error 13 91 write protect field 8 10 writing field totals on disk 37 41 writing over data BSe 76 wrong length check error 90 148 1...

Page 155: ...ographical illustration and so on No reply Page Number Error Note All comments and suggestions become the property of IBM No postage necessary if mailed in the U S A Inaccurate or misleading informati...

Page 156: ...Dept 245 Rochester Minnesota 55901 International Business Machines Corporation General Systems Division 4111 Northside Parkway N W P O Box 2150 Atlanta Georgia 30301 U S A only General Business Group...

Page 157: ......

Page 158: ...nes Corporation General Systems Division 4111 Northside Parkway N W P O Box 2150 Atlanta Georgia 30301 U S A only General Business Group International 44 South Broadway White Plains New York 10601 U S...