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3274 IBM Control Unit

Most parts, components and features available.
Diskettes available.
Configuration assistance

The IBM 3274 Control Unit provides the capability of controlling up to a maximum cluster of 32 terminals consisting of display stations, and/or printers. The 3274 models attach the terminals to S/3, S/360, S/370, 303x, 308x, 3090, 4300, 8100, or 9370 processors with SNA or 3270 attachment, via a local byte multiplexer, selector, or block multiplexer channel. The 3274 also has models for communicating in data half-duplex mode via half-duplex or duplex communications facilities.

Model Abstract 3274-A01

The IBM 3274 Model A01 (1A) provides a local (SNA) attachment for up to 32 terminals/printers to a S/370, 30xx, or 4300 processor.

Model Abstract 3274-B01

The IBM 3274 Model B01 (1B) provides a local (3272) attachment for up to 32 terminals/printers to a S/360, S/370, 30xx, or 4300 processor.

Model Abstract 3274-C01

The IBM 3274 Model C01 (1C) provides a local (SNA) attachment or remote communications for up to 32 terminals/printers to a S/360, S/370, 30xx, or 4300 processor.

Model Abstract 3274-D01

The IBM 3274 Model D01 (1D) provides a local (3272) attachment for up to 32 terminals/printers to a S/370 or 4300 processor.

Model Abstract 3274-21A

The IBM 3274 Model 21A provides a local (SNA) attachment for up to 32 terminals/printers to a S/370, 30xx, or 4300 processor. Model 21A comes with 64k storage size.

Model Abstract 3274-21B

The IBM 3274 Model 21B provides a local (3272) attachment for up to 32 terminals/printers to a S/360, S/370, 30xx, or 4300 processor. Model 21B comes with 64k storage size.

Model Abstract 3274-21C

The IBM 3274 Model 21C provides remote communications for up to 32 terminals/printers to a S/3, S/360, S/370, 30xx, 303x, 3081, 308x, 3090, 4300, 8100, or 9370 processor. Model 21C comes with 64k storage size.

Model Abstract 3274-21D

The IBM 3274 Model 21D provides a local (3272) attachment for up to 32 terminals/printers to a S/370 or 4300 processor. Model 21D comes with 64k storage size.

Model Abstract 3274-31A

The IBM 3274 Model 31A provides a local (SNA) attachment for up to 32 terminals/printers to a S/370, 30xx, or 4300 processor. Model 31A comes with 128k storage size.

Model Abstract 3274-31C

The IBM 3274 Model 31C provides remote communications for up to 32 terminals/printers to a S/3, S/360, S/370, 30xx, 303x, 3081, 308x, 3090, 4300, 8100, or 9370 processor. Model 31C comes with 128k storage size.

Model Abstract 3274-31D

The IBM 3274 Model 31D provides a local (3272) attachment for up to 32 terminals/printers to a S/370 or 4300 processor. Model 31D comes with 128k storage size.

Model Abstract 3274-41A

The IBM 3274 Model 41A provides a local (SNA) attachment for up to 32 terminals/printers to a S/370, 30xx, or 4300 processor. Model 41A comes with 192k storage size.

Model Abstract 3274-41C

The IBM 3274 Model 41C provides remote communications for up to 32 terminals/printers to a S/3, S/360, S/370, 30xx, 303x, 3081, 308x, 3090, 4300, 8100, or 9370 processor. Model 41C comes with 192k storage size.

Model Abstract 3274-41D

The IBM 3274 Model 41D provides a local (3272) attachment for up to 32 terminals/printers to a S/370 or 4300 processor. Model 41D comes with 192k storage size.

Model Abstract 3274-51C

The IBM 3274 Model 51C provides remote communications for up to 12 terminals/printers to a S/3, S/360, S/370, 30xx, 303x, 3081, 308x, 3090, 4300, 8100, or 9370 processor. Model 51C comes with 64k storage size with capability to add another 64k.

Model Abstract 3274-61C

The IBM 3274 Model 61C provides remote communications for up to 16 terminals/printers to a S/3, S/360, S/370, 30xx, 303x, 3081, 308x, 3090, 4300, 8100, or 9370 processor. Model 61C comes with 192k storage size.

Highlights

Controller for up to 32 terminals consisting of display stations or printers
Connection to System/3, S/360, S/370, 4300, 303x, 3081, 308x, 3090, 4300, 8100, 9370, and some other processors
Local-attachment models via SNA or 3272
Communication models for communicating in data half-duplex mode via half-duplex or duplex facilities

Description

The 3274 is a terminal control unit which can attach up to 32 displays (12 on Model 51C; 16 on Model 61C) and/or printers, unless a Displaywriter System(s), which includes a printer, is to be attached. A Displaywriter System without a printer requires one terminal port (the same as other terminals), but when a Displaywriter System includes a printer, two terminal ports are required to attach. These terminals are grouped into two categories, A and B. The Category A terminals are a display and printers which were developed for attachment to the 3274, while the Category B terminals were designed for attachment to the 3271s and 3272s. The 3274 attaches the Category B terminals with certain limitations. A maximum of 16 of the 32 attachable terminals can be Category B terminals. During a write operation, a 3277 attached to a 3274 via a Type B Terminal Adapter will blink more frequently than when attached to a 3271 or 3272.

The 3274 can communicate with a S/360, S/370, 30xx, 4300 or 9370 Processor by local channel attach or remotely via communications facilities. The channel-attached Control Unit is available in three model groups: Models 1A, 21A, 31A, 41A for SNA operation with extended data stream handling capabilities, Models 1B, 21B for 3272 operation, and Models 1D, 21D, 31D, 41D for 3272 operation with extended data stream handling capabilities. The Models 1C, 21C, 31C, 41C, 51C, 61C can operate with extended data stream handling capabilities as either a BSC 3271 or as an SNA/SDLC unit.

Models 51C and 61C can also attach via a Data Link to the 8100 Information System or to the 8100 or 4331/4361 via a direct- or data link-attached loop.

The flexibility of 3274s enables the user to configure a display sub-system for initial requirements, and later change hardware and functions to meet future needs. Function configurability is attained through Configuration Support options, via Feature and System Diskettes.

One Feature Diskette and two System Diskettes are shipped with each 3274.

For Models 31A, 31C, 31D, or 51C that are upgraded to Configuration Support D, a Language Diskette is also shipped.
An Encrypt/Decrypt Feature Diskette is also shipped with the Encrypt/Decrypt feature (#3680) on a 3274 Model 1C, 21C, 31C, 41C, 51C, or 61C. As part of the installation procedure, a customized System Diskette is generated. The generation process is accomplished by the customer keying in system configuration parameters. A unique configuration table is written on the System Diskette along with the necessary control code to accomplish the functions. For example, during subsequent control unit loading or initialization of a Model 1C, 21C, 31C, 41C, 51C, or 61C; BSC or SNA/SDLC mode of operation is determined by the configuration recorded on the System Diskette used. It is possible to create two different System Diskettes; one to be used for BSC operation and the other to be used when operating SNA/SDLC.

The control unit is initialized with control code and configuration parameters as a result of Power On or by pressing the IML pushbutton. The load occurs from an integrated diskette drive using the previously customized System Diskette. The loading process starts with the execution of extended tests contained on the diskette.

The character set to be used on attached terminals is specified on the customized IML Diskette during installation procedure. All attached terminals must have the same character set.

Either EBCDIC or ASCII can be selected during 3274 Model 1C, 21C, 31C, 41C, 51C, or 61C customization. ASCII support is provided to correspond with transmission code that is used by S/3. Both ASCII transmission codes and ASCII data codes are supported in BSC. Only ASCII alphameric data bytes of Function Management Request/Response Units are supported in SNA/SDLC. SCS, APL/Text, and the 3270 data stream extensions included in the Structured Field and Attribute Processing (SFAP) customization option are not supported in either BSC or SNA/SDLC when ASCII is used.

Detailed information for initial customizing, for customizing made necessary by changing configurations, and for optionally updating the diskettes, is contained in the "IBM 3270 Information Display System, GA27-2827; IBM 3274 Control Unit Planning, Setup and Customizing Guide", GA23-0065.

Glossary

Local Attachment: For attachment to a host via a byte multiplexer, selector, or block multiplexer channel.

Remote Attachment: For attachment to a host in data half-duplex mode via half-duplex or duplex communications facilities.

Enhanced Functions: Support for:

APL
Extended Highlighting
Extended Color
Programmed Symbols (PS)
Query

SNA: Systems Network Architecture

Control Unit Terminal Mode: The 3270 Personal Computer operates as a 3178, 3278 Model 2 or 3279.

Model Description 3274-A01

Provides the capability of controlling up to a maximum cluster of 32 terminals consisting of display stations, and/or printers. Two categories of terminal adapters are used in attaching the desired displays or printers (see "Terminal Attachment List" below). The basic 3274 allows attachment of up to eight Category A terminals. The two categories of terminal adapters can be featured in various combinations to provide the maximum terminal configuration of 32 terminals (a maximum of 16 of the 32 terminals can be Category B units and at least one Category A Display Station with keyboard is needed for diagnostic purposes). The 3274 has one model for communicating in data half-duplex mode via half-duplex or duplex communications facilities and three models for local channel attachment.

For local (SNA version) attachment, via a byte multiplexer, selector, or *block multiplexer channel, to a S/370 or 30XX processor; or any 4300 processor via a byte multiplexer or block multiplexer channel.

Attachable Terminals

Category A Terminals:

3178 Model C1, C2: Display Station
3178 Model C3, C4: Display Station (See Note 5)
3191 (See 3191 pages for models): Display Station
3192 (See 3192 pages for models): Display Station
3262 Model 3 & 13: Line Printer
3268 Model 2: Impact Matrix Printer
3268 Model 2C: Color Impact Matrix Printer
3270 Personal Computer (Control Unit Terminal Mode)
3278 Model 1, 2, 3, 4, 5: Display Station (see Note 1)
3279 Model 2A, 2B, 3A, 3B,
3279 Model 2A, 2B, 3A, 3B, S2A, S2B, S3G, 02X, 03X: Color Display Station
3287 Model 1, 2: Impact Matrix Printer
3287 Model 1C, 2C w/#8331: Color Impact Matrix Printer
3289 Model 1, 2: Line Printer
3290 Model 1: Information Panel (No Longer Available as of May 26, 1989)
4245 Models D12, D20 (supported as a 3262 Model 3): Line Printer
4250: APA Printer (see Notes 2 and 3)
5150: Personal Computer (via 3278/79 Emulation Adapter)
5160 with XT/370 Option Kit and 3278/79 Emulation Adapter (Control Unit Terminal Mode only): Personal Computer XT/370
5160 Model 589 (Control Unit Terminal Mode only): Personal Computer XT/370
5170 Model 599 and Model 739 (Control Unit Terminal Mode only): Personal Computer AT/370
5170 with AT/370 Option Kit and 3278/79 Emulation Adapter (Control Unit Terminal Mode only): Personal Computer AT/370
5210 Model G1, G2: Printwheel Printer
6252 D Model (supported as 3262-3) Line Printers
6580 Model A04, A06, A08, A10, B04, B06, B08, B10; w/#8332 and LP 5608-SR9 (see Note 4): Displaywriter System

Notes:

Because of the high data volumes possible with this printer, it is strongly recommended the IBM Aid FIVE3270 be used to predict the effect the 4250 has on subsystem performance.
Two terminal ports are required to attach a Displaywriter System when it includes a printer.
Model C3, C4 support requires RPQs. See "Prerequisites" section in 3178 pages for details.

Category B Terminals:

3277 Model 1, 2: Display Station
3284 Model 1, 2: Impact Matrix Printer
3286 Model 1, 2: Impact Matrix Printer
3287 Model 1, 2 (with 3271/3272 attachment feature): Impact Matrix Printer
3288 Model 2: Line Printer

3274 Control Storage Requirement Tables

Use the following procedure to determine which, if any, EFS features must be ordered on the Model 1A:

Select the Configuration Support option which contains the functions desired. If T is selected, go directly to Table 2, line 6, for EFS feature codes needed, otherwise continue to Step #2.
After determining the desired Configuration Support, refer to the appropriate part of Table 1 and select the features desired:

3274 Model 1A, refer to Table 1, Part 1.

Determine the total Type C and total Type D storage required for the features and functions selected in Step #2.
Add the Type C and Type D totals to determine the total control storage required. If the total is equal to or less than 65,536, no EFS features are required. If the total is greater than 65,536, continue with Step #5.
Refer to Table 2. For Configuration Support A or B, begin at line 1 and work down. For C, begin at line 4 and work down. Stop at the first line that satisfies the control storage requirements determined in Steps 3 and 4. Order the EFS features listed in the last column.

Notes For Table 1:

Configuration Support A Consideration Only: If all three keyboard types (Typewriter, Data Entry and Data Entry-Keypunch-like) are required on display stations attached to the 3274, add 1000 to the Type D storage requirements in addition to that listed in the table.
If the total Type D storage requirement calculated for Category A, plus Category B terminals, exceeds the applicable maximum storage value listed below, use the applicable maximum value.

                    Maximum
Unit              Storage Value
3274-1A              10,744

There is no customizing option nor additional control storage required to support 10 Numeric-only Character Set for Operator Identification Card Reader (#4600) on 3277s (Category B terminals) which are attached to a 3274.
Add the indicated amount for each keyboard type to be used.
The SFAP function is also required when the SCS Support for SFAP (#9661) feature is to be used on 3287 Models 1, 2, 1C or 2C.
SCS Printer Support is required for DCA-LV2 Word Processing applications. This support also required for 5210 Models G01 or G02, attached to 3274 Models 1A and 1C SNA for applications that utilize the cut sheet feed attachment feature (#7860) when operating with 2 drawers.
Configuration Support C (#9112) is required for 5210 Models G01, G02 attached to 3274 Models 1A SNA for support of Word Processing applications. This includes those applications which utilize the cut sheet feed attachment feature (#7860) when operating with 2 drawers.
The SFAP function is also required when the Query function is used with 3262 Models 3 and 13, 3268 Model 2, (and 4214 Model 1 in EMEA) printers. The Query function allows the application to interrogate the printer to determine what function is supported.
For 4250 attachment to 3274 Models 1A, the SFAP function is required plus support for one Extended Attribute Terminal for each 4250 attached.
SCS printer support required for 4250 attachment.
A Displaywriter System requires two terminal ports when it includes a printer.
Limitations: This function does NOT support ASCII unless RPQ 8K1037 is installed.

Table 1 - Part 1

3274 Model 1A             TYPE C  TYPE D
----------------------------------------
Model 1A Base (including
  copy) (Choose one)
 Configuration
  Support A (#9110)       41,200  13,600
 Configuration
  Support B (#9111)       45,072  14,484
 Configuration
  Support C (#9112)       50,030  17,940
Category A terminals
  (Choose one) (2,11)
 1 to 8 terminals
  (included in base)           0       0
 1 to 16 terminals             0   2,048
 1 to 24 terminals             0   4,096
 1 to 32 terminals             0   6,144
Keyboards on Cat. A termi-
  nals (select all that
  apply, choosing at least
  one) (4)
 Typewriter(1) (3278/3279-
  #4621, #4624, #4627, #4628,
  #4640, #4651, 3178 Model C2) 0     786
 3191 Display Station          0     786
 3192 Display Station          0     786
 3270 Personal Computer
  Control Unit Terminal Mode   0     786

Typewriter(1) (3178 Model C3) 0 786 Typewriter(1) (3178 Model C4) 0 786
Data Entry(1) (3278/3279- #4622, 3178 Model C1) 0 786 Data Entry KP(1) (3278/3279-#4623) 0 786
Text (3278/3279-#4629) 0 1,560
APL (3180 Model 130, 3278/ 3279-#4626, #4652) 0 1,560

Category B terminals (Choose one)(2,3) 1 to 4 terminals 4,900 5,624 1 to 8 terminals 4,900 6,648 1 to 12 terminals 4,900 7,672 1 to 16 terminals 4,900 8,696 APL/Text Control Function (Choose one) Configuration Support A or B 1,700 1,200 Configuration Support C 0 0

3289 Text Print Control 0 512
Host-Loadable Printer Auth- orization Matrix 500 0 Between Bracket Printer Sharing 800 100 SCS Printer Support (3287- #9660,#9661)(5,10) (3262 and 3268 basic function) (8), (3289 basic function), (4250 basic function)(9),

(5210 basic function) (6,7) 1,500 100 Magnetic Rdr Ctrl (3278/ 3279-#4999) (Choose one) 3275/3277-Like 10-Ch Set 600 60 Num & Alpha Char Sets 1,630 316 Color Convergence (Base or Extended Color) 4,296 1,198 Alert Function 2,544 4,224 ---------------------------------------- The Following Are Available w/Configuration Support C Only: Structured Field & Attri- bute Processing (SFAP) 4,950 950 (Note 12 for US and EMEA only) Programmed Symbols(PS) 2,700 190 Decompression 900 0 Extended Attribute Termi- nals (add 256 for each terminal) (3268 Model 2C/ 3278/3287-#3610/3279 Model 2B or 3B) 0 #x256

IBM Personal Computer Sup- port Attachment (3278/ 3279-#5315,#5316/#5325, #5326) 3,200 300

Table 2

*--------------------------------------*
|#|  FACTORS |    SIZE   |FEATURE CODES|
|-|----------|-----------|-------------|
|1|Type C + D|LT/= 65,536|    None     |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |             |
|2|and Type C|LT/= 49,152|#1801 + #3622|
| |and Type D|LT/= 32,768|             |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|3|and Type C|LT/= 49,152|#3627        |
| |and Type D|LT/= 49,152|             |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|4|and Type C|LT/= 65,536|#3625; or    |
| |and Type D|LT/= 32,768|#1801, #3623 |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|5|and Type C|LT/= 65,536|#3625, #3627;|
| |and Type D|LT/= 49,152|or #1801,    |
| |          |           |#3623, #3627 |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|6|and Type C|LT/= 65,536|#3625, #3628;|
| |and Type D| GT 49,152 |or #1801,    |
| |          |           |#3623, #3628 |
|-|----------|-----------|-------------|
| |Type C    | GT 65,536 |#1801, #3622,|
|7|and Type C|LT/= 71,680|#3625, #3628;|
| |and Type D|    Any    |or #1801,    |
| |          |           |#3623, #3628 |
|-|----------|-----------|-------------|
|8|Type C    | GT 71,680 |Invalid      |
| |          |           |Configuration|
*--------------------------------------*

Control Storage Functions

APL/Text Control Function: This function, selectable during the customization of a 3274 Model 1A, expands the character handling capability of the 3274 to accommodate the APL, Text, and graphic plot character sets on 3278s, 3268 Model 2, 3262s (text only), 3279, and 3287s attached via Type A Terminal Adapters (#6901, #6902, #6903).

Note: The 3274, with or without this APL/Text control function, does NOT support the 3270 Data Analysis/APL Feature (#1066) on attached 3277s or 3284, 3286 or 3287s, NOR does it support the Text Print Feature (#7880) on attached 3288s.

3289 Text Print Control Function: This function, selectable during customization of a 3274 Model 1A, extends the character handling capability of the 3274 to accommodate the text characters (US English only) for the text print feature (#1130) on attached 3289s.

Copy Function:

This function is provided as basic on the 3274 Models 1A (SNA). The ability to perform host initiated local copies from a 3178, 3278, or 3279, to a 3268, 3287, 3289, 3262, 5210 attached to a 3274 Model 1A (SNA) is also provided as basic.

Local Copy Summary

3274 Mdl  Print Key     Host Initiated
1A        Basic         Basic

Note: The 3274 does not support copying the screen contents of an attached display station to an attached 4250.

Host-Loadable Print Authorization Matrix: This function, selectable during the 3274 customization process, provides the capability for the 3274, during subsequent IBM procedures, to receive, from a user-written application program at the host CPU, an updated Printer Authorization Matrix to override the matrix created by the customization operator or by system default.

Between Bracket Printer Sharing Function:

This function, selectable during the customization of a 3274 Model 1A (SNA), enables attached 3268s, 3287s, 3289s, 3262s, 5210s, to be used as Local Copy output devices for the screen contents of attached 3178, 3278 and 3279s, when the printers are Between Brackets with the host application program. Printers are available for Local Copy operations only when they are not in session with an application program if this option is not selected.

Color Convergence Function: This function, selectable during the customization of any Model 3274, provides the mechanism through which the operator of a 3279 can perform color convergence for the 3279.

SFAP Function:

This function, selectable during the customization of any Model 3274 provides a new 3270 command and several new orders that extend the functional capabilities of appropriately featured 3278, 3279, 3287, 3262, 3268 terminals.

Data Streams sent to these attached terminals can include extended color, extended highlighting, or Programmed Symbols, in any combination. Prerequisites: BSC hosts that utilize this function must transmit in transparent-text mode. Limitations in the US: This function does NOT support ASCII unless RPQ 8K1037 is installed. Limitations in EMEA: This function does NOT support the 1,970 Alternate Character Set codes for Austria/Germany, Denmark/Norway, Finland/Sweden, and Spain.

Programmed Symbols (PS) Function: This function, selectable during the customization of any Model 3274, enables the customer to define, store, and access up to six, 190-symbol sets on appropriately featured 3278s, 3279s, 3268 Model 2C and 3287s. Prerequisites: SFAP.

Decompression Function: This function, selectable during the customization of any Model 3274, decompresses data streams containing compressed Programmed Symbols generated by the Graphical Data Display Manager (GDDM) program product. Its usage is recommended for all 3274 TP host attachments that use GDDM. Prerequisites: SFAP.

Extended Attribute Terminals: This function, selectable during the customization of any Model 3274, establishes an internal control table for each terminal on which Extended Color, Extended Highlighting, and Programmed Symbols, will be used or when a 4250 will be attached. If more extended attribute terminals are attached to the 3274 than are specified during customization, the excess terminals will execute only base-level function. Prerequisites: SFAP.

IBM Personal Computer Attachment Support: This function, selectable during the customization of any Model 3274, except 21x, provides support for attachment of an IBM Personal Computer to a 3278 or 3279. Prerequisites: SFAP.

3274 Entry Assist RPQ: This RPQ provides capabilities which facilitate entry and editing of text material. The capabilities include margins, tabbing, word-wrap, improved cursor positioning, improved character and word delete, cursor position indicator and an audible end-of-line warning tone. Entry Assist RPQ is intended for use with a specific set of host editor programs. See RPQ 8K1147 Description and Price Transmittal for storage requirements and prerequisites.

Alert Function: This function, selectable during the customization of 3274 Models 1A reports problem determination data to the host, for recording and display, when NPDA Version 3 is installed in the host.

Model Description 3274-B01

Model B01 1B

For local (3272 version) attachment, via a byte multiplexer, selector, or *block multiplexer channel, to a S/370 or 30XX processor, or S/360 Models 30, 40, 50, 65, 75, and 195; or any 4300 processor via a byte multiplexer or block multiplexer channel.

* Attachment to a non-DCC subchannel of a block multiplexer channel or to a selector channel is not recommended due to performance considerations which may yield less than maximum throughput.

Attachable Terminals

Category A Terminals:

3178 Model C1, C2: Display Station
3178 Model C3, C4: Display Station (See Note 5)
3191 (See 3191 pages for models): Display Station
3192 (See 3192 pages for models): Display Station
3262 Model 3 & 13: Line Printer
3268 Model 2: Impact Matrix Printer
3268 Model 2C: Color Impact Matrix Printer
3270 Personal Computer (Control Unit Terminal Mode)
3278 Model 1, 2, 3, 4, 5: Display Station (see Note 1)
3279 Model 2A, 2B, 3A, 3B,
3279 Model 2A, 2B, 3A, 3B, S2A, S2B, S3G, 02X, 03X: Color Display Station
3279 Model 2A, 2B, 3A, 3B, S2A, S2B, S3A, S3B, S3G: Color Display Station
3287 Model 1, 2: Impact Matrix Printer
3287 Model 1C, 2C w/#8331: Color Impact Matrix Printer
3289 Model 1, 2: Line Printer
3290 Model 1: Information Panel (No Longer Available as of May 26, 1989)
4214 Model 1: Impact Matrix Printer
4245 Models D12, D20 (supported as a 3262 Model 3): Line Printer
4250: APA Printer (see Notes 2 and 3)
5150: Personal Computer (via 3278/79 Emulation Adapter)
5160 with XT/370 Option Kit and 3278/79 Emulation Adapter (Control Unit Terminal Mode only): Personal Computer XT/370
5160 Model 589 (Control Unit Terminal Mode only): Personal Computer XT/370
5170 Model 599 and Model 739 (Control Unit Terminal Mode only): Personal Computer AT/370
5170 with AT/370 Option Kit and 3278/79 Emulation Adapter (Control Unit Terminal Mode only): Personal Computer AT/370
5210 Model G1, G2: Printwheel Printer
6252 D Model (supported as 3262-3) Line Printers
6580 Model A04, A06, A08, A10, B04, B06, B08, B10; w/#8332 and LP 5608-SR9 (see Note 4): Displaywriter System

Notes:

Model 5 cannot be attached to a 3274 Model 1B.
4250 cannot attach to 3274 Models 1B.
Because of the high data volumes possible with this printer, it is strongly recommended the IBM Aid FIVE3270 be used to predict the effect the 4250 has on subsystem performance.
Two terminal ports are required to attach a Displaywriter System when it includes a printer.

Category B Terminals:

3277 Model 1, 2: Display Station
3284 Model 1, 2: Impact Matrix Printer
3286 Model 1, 2: Impact Matrix Printer
3287 Model 1, 2 (with 3271/3272 attachment feature): Impact Matrix Printer
3288 Model 2: Line Printer

3274 Control Storage Requirement Tables

Table 2

*--------------------------------------*
|#|  FACTORS |    SIZE   |FEATURE CODES|
|-|----------|-----------|-------------|
|1|Type C + D|LT/= 65,536|    None     |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |             |
|2|and Type C|LT/= 49,152|#1801 + #3622|
| |and Type D|LT/= 32,768|             |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|3|and Type C|LT/= 49,152|#3627        |
| |and Type D|LT/= 49,152|             |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|4|and Type C|LT/= 65,536|#3625; or    |
| |and Type D|LT/= 32,768|#1801, #3623 |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|5|and Type C|LT/= 65,536|#3625, #3627;|
| |and Type D|LT/= 49,152|or #1801,    |
| |          |           |#3623, #3627 |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|6|and Type C|LT/= 65,536|#3625, #3628;|
| |and Type D| GT 49,152 |or #1801,    |
| |          |           |#3623, #3628 |
|-|----------|-----------|-------------|
| |Type C    | GT 65,536 |#1801, #3622,|
|7|and Type C|LT/= 71,680|#3625, #3628;|
| |and Type D|    Any    |or #1801,    |
| |          |           |#3623, #3628 |
|-|----------|-----------|-------------|
|8|Type C    | GT 71,680 |Invalid      |
| |          |           |Configuration|
*--------------------------------------*

Control Storage Functions

Copy Function:

This function is provided as basic on the 3274 Model 1B.

Local Copy Summary

3274 Mdl  Print Key     Host Initiated
1B        Basic         Not Applicable

Note: The 3274 does not support copying the screen contents of an attached display station to an attached 4250.

3274 Entry Assist RPQ is supported for the following keyboard languages/character sets:

Model Description 3274-C01

Model 1C C01

For communicating in data half-duplex mode over half-duplex or duplex communications facilities with the following:

A S/370, 30XX or 4300 processor via 3704 or 3705 (or via the Communications Adapter feature on the 4331), using Synchronous Data Link Control (SDLC/SNA).
A S/370, 30XX or 4300 processor via (where applicable) 2701, 2703, a 3704 or 3705, or a Communications Adapter feature on the 4331, using Binary Synchronous Communications (BSC).
S/370 Models 115, 125, 135 and 138 via Integrated Communications Adapter (ICA) using BSC.
S/360 Models 30, 40, 50, 65, 75, and 195 via 2701 , 2703, or a 3704 or 3705 using BSC.

Attachable Terminals

Category A Terminals:

3178 Model C1, C2: Display Station
3178 Model C3, C4: Display Station (See Note 5)
3191 (See 3191 pages for models): Display Station
3192 (See 3192 pages for models): Display Station
3262 Model 3 & 13: Line Printer
3268 Model 2: Impact Matrix Printer
3268 Model 2C: Color Impact Matrix Printer
3270 Personal Computer (Control Unit Terminal Mode)
3278 Model 1, 2, 3, 4, 5: Display Station (see Note 1)
3279 Model 2A, 2B, 3A, 3B,
3279 Model 2A, 2B, 3A, 3B, S2A, S2B, S3G, 02X, 03X: Color Display Station
3287 Model 1, 2: Impact Matrix Printer
3287 Model 1C, 2C w/#8331: Color Impact Matrix Printer
3289 Model 1, 2: Line Printer

3290 Model 1: Information Panel

4245 Models D12, D20 (supported as a 3262 Model 3): Line Printer
4250: APA Printer (see Notes 2 and 3)
5150: Personal Computer (via 3278/79 Emulation Adapter)
5160 with XT/370 Option Kit and 3278/79 Emulation Adapter (Control Unit Terminal Mode only): Personal Computer XT/370
5160 Model 589 (Control Unit Terminal Mode only): Personal Computer XT/370
5170 Model 599 and Model 739 (Control Unit Terminal Mode only): Personal Computer AT/370
5170 with AT/370 Option Kit and 3278/79 Emulation Adapter (Control Unit Terminal Mode only): Personal Computer AT/370
5210 Model G1, G2: Printwheel Printer
6252 D Model (supported as 3262-3) Line Printers
6580 Model A04, A06, A08, A10, B04, B06, B08, B10; w/#8332 and LP 5608-SR9 (see Note 4): Displaywriter System

Notes:

4250 cannot attach to 3274 Models 1C.
Because of the high data volumes possible with this printer, it is strongly recommended the IBM Aid FIVE3270 be used to predict the effect the 4250 has on subsystem performance.
Two terminal ports are required to attach a Displaywriter System when it includes a printer.
Model C3, C4 support requires RPQs. See "Prerequisites" section in 3178 pages for details.

Category B Terminals:

3277 Model 1, 2: Display Station
3284 Model 1, 2: Impact Matrix Printer
3286 Model 1, 2: Impact Matrix Printer
3287 Model 1, 2 (with 3271/3272 attachment feature): Impact Matrix Printer
3288 Model 2: Line Printer

3274 Control Storage Requirement Tables

Use the following procedure to determine which, if any, EFS features must be ordered on the Model 1A, 1C or 1D:

Select the Configuration Support option which contains the functions desired. If T is selected, go directly to Table 2, line 6, for EFS feature codes needed, otherwise continue to Step #2.
After determining the desired Configuration Support, refer to the appropriate part of Table 1 and select the features desired:

3274 Model 1C/SNA, refer to Table 1, Part 2.
3274 Model 1C/BSC, refer to Table 1, Part 3.

Determine the total Type C and total Type D storage required for the features and functions selected in Step #2.
Add the Type C and Type D totals to determine the total control storage required. If the total is equal to or less than 65,536, no EFS features are required. If the total is greater than 65,536, continue with Step #5.
Refer to Table 2. For Configuration Support A or B, begin at line 1 and work down. For C, begin at line 4 and work down. Stop at the first line that satisfies the control storage requirements determined in Steps 3 and 4. Order the EFS features listed in the last column.

Notes For Table 1:

Configuration Support A Consideration Only: If all three keyboard types (Typewriter, Data Entry and Data Entry-Keypunch-like) are required on display stations attached to the 3274, add 1000 to the Type D storage requirements in addition to that listed in the table.
If the total Type D storage requirement calculated for Category A, plus Category B terminals, exceeds the applicable maximum storage value listed below, use the applicable maximum value.

                    Maximum
Unit              Storage Value
3274-1C/SNA          10,744
3274-1C/BSC           6,844

There is no customizing option nor additional control storage required to support 10 Numeric-only Character Set for Operator Identification Card Reader (#4600) on 3277s (Category B terminals) which are attached to a 3274.
Add the indicated amount for each keyboard type to be used.
The SFAP function is also required when the SCS Support for SFAP (#9661) feature is to be used on 3287 Models 1, 2, 1C or 2C.
SCS Printer Support is required for DCA-LV2 Word Processing applications. This support also required for 5210 Models G01 or G02, attached to 3274 Models 1C SNA for applications that utilize the cut sheet feed attachment feature (#7860) when operating with 2 drawers.
Configuration Support C (#9112) is required for 5210 Models G01, G02 attached to 3274 Models 1C SNA for support of Word Processing applications. This includes those applications which utilize the cut sheet feed attachment feature (#7860) when operating with 2 drawers.
The SFAP function is also required when the Query function is used with 3262 Models 3 and 13, 3268 Model 2, (and 4214 Model 1 in EMEA) printers. The Query function allows the application to interrogate the printer to determine what function is supported.
SCS printer support required for 4250 attachment.
A Displaywriter System requires two terminal ports when it includes a printer.
Limitations: This function does NOT support ASCII unless RPQ 8K1037 is installed.

Table 1 - Part 2

3274 Model 1C/SNA         TYPE C  TYPE D
----------------------------------------
Model 1C/SNA (including
  copy) (Choose one)
 EBCDIC
  Conf. Support A (#9110) 41,030  13,700
  Conf. Support B (#9111) 46,102  15,096
  Conf. Support C (#9112) 50,580  17,940

ASCII Conf. Support A (#9110) 41,446 14,100 Conf. Support B (#9111) 46,518 15,496 Conf. Support C (#9112) 51,700 18,090
Category A Terminals (Choose one)(2,11) 1 to 8 terminals (included in base) 0 0 1 to 16 terminals 0 2,048 1 to 24 terminals 0 4,096 1 to 32 terminals 0 6,144 Keyboards on Cat. A terminals (select all that apply, choosing at least one)(4) Typewriter(1) (3278/3279- #4621,#4624,#4627,#4628, #4640,#4651, 3178 Model C2) 0 786 3191 Display Station 0 786 3192 Display Station 0 786 3270 PC Control Unit Terminal Mode 0 786

Typewriter(1) (3178 Model C3) 0 786 Typewriter(1) (3178 Model C4) 0 786
Data Entry(1) (#3278/3279- #4622, 3178 Model C1) 0 786 Data Entry(1) KP (3278/3279-#4623) 0 786
Text (3278/3279-#4629) 0 1,560
APL (3180 Model 130, 3278/ 3279-#4626,#4652) 0 1,560

3289 Text Print Control 0 512
High-Perf. Comm. Adapter (#6303) (Choose one) Conf. Support A or B 600 -500 Conf. Support C 600 +400 Host-Loadable Printer Authorization Matrix 500 0 Between Bracket Ptr Sharing 800 100 SCS Printer Support (3287- #9660,#9661)(5), (3262 and 3268 basic function)(8), (3289 basic function),

(5210 basic function) 1,600 100 Magnetic Rdr Ctrl (3278/ 3279-#4999) (Choose one) 3275/3277-Like 10-Ch Set 600 60 Num & Alpha Char Sets 1,630 316 Encrypt/Decrypt (#3680) 3,200 2,000 Color Convergence (Base or Extended Color) 4,296 1,198 Alert Function 2,544 4,224 ---------------------------------------- The Following Are Available w/ Configuration Support C Only: Structured Field & Attri- bute Processing (SFAP) (EBCDIC only) 4,950 950

(12)Programmed Symbols (PS) 2,700 190 Decompression 900 0 Extended Attribute Termi- nals (add 256 for each terminal) (3268 Model 2C/ 3278/3287-#3610/3279 Model 2B or 3B) 0 #x256

IBM PC Support Attachment (3278/3279-#5315,#5316/ #5325,#5326) 3,200 300

Table 1 - Part 3

3274 Model 1C/BSC         TYPE C  TYPE D
----------------------------------------
Model 1C/BSC (Choose one)
 EBCDIC
  Conf. Support A (#9110) 38,000  13,800
  Conf. Support B (#9111) 41,872  14,684
  Conf. Support C (#9112) 47,150  22,200

Category B terminals (Choose one)(2,3) 1 to 4 terminals 4,700 1,724 1 to 8 terminals 4,700 2,748 1 to 12 terminals 4,700 3,772 1 to 16 terminals 4,700 4,796 APL/Text Control Function (Choose one) Conf. Support A or B 2 ,200 4,700 Conf. Support C 0 0

3289 Text Print Control 0 512
Host-Loadable Printer Authorization Matrix 550 0 Copy (Print Key Function) 2,700 0 Magnetic Rdr Ctrl (3278/ 3279-#4999) (Choose one) 3275/3277-Like 10-Ch Set 600 60 Num & Alpha Char Sets 1,630 316 Color Convergence (Base or Extended Color) 4,296 1,198 ---------------------------------------- The Following Are Available w/ Configuration Support C Only: Structured Field & Attri- bute Processing (SFAP) (EBCDIC only) 4,950 950

(12) Programmed Symbols (PS) 2,700 9,610 Decompression 900 0 Extended Attribute Terminals (add 256 for each terminal) (3268 Model 2C/3278/3287- #3610/3279 Model 2B or 3B) 0 #x256

IBM PC Support Attachment (3278/3279-#5315,#5316/ #5325,#5326) 3,200 300

Table 2

*--------------------------------------*
|#|  FACTORS |    SIZE   |FEATURE CODES|
|-|----------|-----------|-------------|
|1|Type C + D|LT/= 65,536|    None     |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |             |
|2|and Type C|LT/= 49,152|#1801 + #3622|
| |and Type D|LT/= 32,768|             |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|3|and Type C|LT/= 49,152|#3627        |
| |and Type D|LT/= 49,152|             |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|4|and Type C|LT/= 65,536|#3625; or    |
| |and Type D|LT/= 32,768|#1801, #3623 |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|5|and Type C|LT/= 65,536|#3625, #3627;|
| |and Type D|LT/= 49,152|or #1801,    |
| |          |           |#3623, #3627 |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|6|and Type C|LT/= 65,536|#3625, #3628;|
| |and Type D| GT 49,152 |or #1801,    |
| |          |           |#3623, #3628 |
|-|----------|-----------|-------------|
| |Type C    | GT 65,536 |#1801, #3622,|
|7|and Type C|LT/= 71,680|#3625, #3628;|
| |and Type D|    Any    |or #1801,    |
| |          |           |#3623, #3628 |
|-|----------|-----------|-------------|
|8|Type C    | GT 71,680 |Invalid      |
| |          |           |Configuration|
*--------------------------------------*

Control Storage Functions

APL/Text Control Function: This function, selectable during the customization of a 3274 Model 1A, 1C or 1D, expands the character handling capability of the 3274 to accommodate the APL, Text, and graphic plot character sets on 3278s, 3268 Model 2, 3262s (text only), 3279, and 3287s attached via Type A Terminal Adapters (#6901, #6902, #6903).

3289 Text Print Control Function: This function, selectable during customization of a 3274 Model 1C, extends the character handling capability of the 3274 to accommodate the text characters (US English only) for the text print feature (#1130) on attached 3289s.

Copy Function:

This function, selectable during the customization of a 3274 Model 1C (BSC), enables the copying of the screen contents of an attached 3178 or 3278 to an attached 3268, 3287, 3289, 3262, 5210 through use of the Local Print Key on the display keyboard. This function is provided as basic on the 3274 Models 1C (SNA). The ability to perform host initiated local copies from a 3178, 3278, or 3279, to a 3268, 3287, 3289, 3262, 5210 attached to a 3274 Model 1C (SNA) is also provided as basic. In addition, the 3274 Model 1C (BSC) supports the 3270 host Copy command as basic.

Local Copy Summary

3274 Mdl  Print Key     Host Initiated
1C (BSC)  Cust. Option  Basic
1C (SNA)  Basic         Basic

Note: The 3274 does not support copying the screen contents of an attached display station to an attached 4250.

Between Bracket Printer Sharing Function:

This function, selectable during the customization of a 3274 Model 1C (SNA), enables attached 3268s, 3287s, 3289s, 3262s, 5210s, to be used as Local Copy output devices for the screen contents of attached 3178, 3278 and 3279s, when the printers are Between Brackets with the host application program. Printers are available for Local Copy operations only when they are not in session with an application program if this option is not selected.

SFAP Function:

This function, selectable during the customization of any Model 3274, provides a new 3270 command and several new orders that extend the functional capabilities of appropriately featured 3278, 3279, 3287, 3262, 3268 terminals.

X.25 Support: (Model 1C) This function, through the use of Configuration Support P (#9116) on a 3274 Model 1C, provides for attachment to X.25 data transmission services having an interface which complies with Recommendation X.25 (Geneva 1980) of the International Telegraph and Telephone Consultative Committee (CCITT). IBM conformance to this X.25 interface is defined in "IBM General Information Manual - The X.25 Interface for Attaching IBM SNA nodes to Packet - Switched Data Networks", GA27-3345. Keyboard labels on attached 3178s, 3278s or 3279s keyboards and display screen indicators are provided for operator reference during the calling, data exchange, and disconnecting phases. See "X.25 Keyboard Labels" under "Accessories" for details on the labels required for selected keyboards on terminals connected to a 3274 attached to a X.25 communications facility. Limitations: #3680 is mutually exclusive with 3274 X.25 capability. The cryptographic feature cannot be used with X.25 operation. Prerequisites: (1) Configuration Support P. (2) SNA/SDLC protocol. (3) Configuration Support P requires 128K of control storage. (4) One of the following Communications Interfaces: #3701,#5655 or#1550.

Note: The maximum line speed supported with any of these Communications Interface features is 9600 bps with X.25. The Communications Interface feature required depends upon the X.25 physical interface provided by the network. (5) #6303.

IBM Personal Computer Attachment Support: This function, selectable during the customization of any Model 3274, except Models 21x, provides support for attachment of an IBM Personal Computer to a 3278 or 3279. Prerequisites: SFAP.
<---US, CAN

Alert Function: This function, selectable during the customization of 3274 Models 1C/SNA reports problem determination data to the host, for recording and display, when NPDA Version 3 is installed in the host.

Terminal Attachment

Either RG-62A/U coaxial cable, IBM Cabling System media or specified telephone twisted-pair wire (IBM Cabling System Type 3 media) can be used for Category A device connections to the 3274. (3289 attaches with coaxial cable only.) Depending on the type of wire used, the distance between the 3274 and its attached terminals can be up to 1,500m (4,920 ft.); when a 3299 is used, the maximum distance can be up to 3,000m (9,840 ft.). The 3274 ports use BNC connectors and require a balun cable assembly to connect terminals via IBM Cabling System Types 1, 2, or 9 media. A balun assembly may also be required at the terminal. (Refer to the appropriate terminal pages.) The number of balun assemblies reduces the maximum allowable wire lengths as shown below.

3274 Category A Terminal Attachment Maximum Lengths:

---------------------------------------
|      |         |IBM Cabling System  |
|      |RG-62A/U |      Media         |
|      |Coaxial  |--------------------|
|Number| Cable   |Types 1 & 2|Type 9  |
| of   |------------------------------|
|Baluns|  m |ft. | m  | ft.  | m |ft. |
|------|----|----|----|------|---|----|
|  0   |1500|4920|N/A | N/A  |N/A|N/A |
|------|----|----|----|------|---|----|
|  1   |N/A |N/A |1000| 3280 |667|2186|
|------|----|----|----|------|---|----|
|  2   |N/A |N/A | 610| 2000 |406|1333|
---------------------------------------

IBM Cabling System Type 3 media (specified telephone twisted-pair wire) can also be used for Category A device connections to the 3274. Connection to the telephone twisted-pair can be via an IBM/ROLM Coax of Twisted-Pair Adapter (CTPA) or equivalent. When one end of the telephone twisted-pair is attached to a CTPA, the maximum wire length is 275m (900 ft.), the minimum wire length is 30.5m (100 ft.).

Category B devices can be driven a maximum of 610m (2,000 ft.) using RG-62A/U coaxial cable or 152m (500 ft.) using IBM Cabling System Type 1 or Type 2 media.

Communications

The 3274 Model 1C communicates in half duplex mode with a S/370, 30XX, 4300 or 9370 Processor using SDLC over duplex or half-duplex communications facilities to a 3704/3705 (or via Communications Adapter feature (#1601) on the 4331); or by BSC to a S/360, S/370, 30XX, 4300 or 9370 Processor, over duplex or half-duplex communications facilities via (where applicable) a 2701, 2703, or a 3704/3705.

Communications with a S/370 Model 115, 125, 135, or 138 can also be via the Integrated Communications Adapter (4640) and appropriate BSC features on a 3115, 3125, 3135, or 3138. Communications with a 4331 Processor can be via the Communications Adapter (#1601) using BSC or SDLC/SNA protocols.

SDLC as used in the 3274-1C conforms to a subset (unbalanced normal mode) of both the ISO HDLC and ANSI ADCCP standards. For details of this conformance, see "General Information Manual, IBM Synchronous Data Link Control", GA27-3093.

A 3274 Model 1C can be used with X.25 communications facilities by using Configuration Support P #9116 and having appropriate hardware features to support this Configuration Support Option. See "X.25 Support" under "Control Storage Functions" and the Configuration Support P description for details.

Performance

For many 3274 Model 1C systems, response time is limited by transmission line speeds. For these cases, applicable line speed upgrades can be translated into immediate response time improvements. However, performance is also data stream-dependent. Refer to IBM Aids for performance evaluation information.

Communications Facilities

The 3274 Model 1C operates in half-duplex point-to-point or multipoint mode on half-duplex or duplex facilities at transmission speeds of 2000 (US and Canada only), 2400, 4800, 7200 and 9600 bps on nonswitched facilities. See 2700 pages for facilities. For the UK, see the "RPQ Manual", Section 7.

Multipoint and point-to-point communications at speeds up to 56K bps are also possible where facilities are available. In addition, communications through a 3705, or to the 4331 Communications Adapter can be via direct connection (without modems or communications facilities) at speeds up to 57.6K bps. All communications at speeds greater than 9600 bps must use SDLC. See 3705 and 4331 pages for details.

Communications Adapters

Communications adapters handle the transmission control protocols (SDLC and BSC) for the 3274 Model 1C.

Communications Interfaces

Communications interfaces connect the 3274 Model 1C to the host link. One and only one, can be selected.

Modems

Unless the 3274 Model 1C will be directly attached to its host, an external modem with its own clocking is required when the External Modem Interface (#3701) or CCITT V.35 Interface (#1550) feature is installed.

Modem        Speed (bps)
3863 Model 1   2400/1200
3864 Model 1   4800/1200
3865 Model 1/2 9600/4800
3868 Model 1   2400/1200
3868 Model 2   4800/2400
3868 Model 3/4 9600/4800
3872 Model 1   2400/1200
5811 Model 10  2400/4800/  Limited
             9600         Distance
                          Modem
     Model 18  Rack Mount
             Version of
             Model 10
5865 Model 1   9600/7200
5866 Model 1   14.4K/12K
 (5865 Mode) 9600/7200
5868 Model 10  Rack Mount
             Version of
             5865
     Model 18  Rack Mount
             Version of
             5866

4-wire Switched Network Back-up is available on 3863, 3864, and 3865 modems with Auto Answer.

Switched network backup operation with Manual Call and Manual or Auto Answer is available on the 3863 Model 1, 3864 Model 1, 3865 Model 1, 3865 Model 2 and 3872 Model 1. For communications capabilities, product utilization and features, see 2700, 3863, 3864, 3865 and 3872 pages.

Direct Connection Attachment

In addition to host attachment via modems or other data circuit-terminating equipment (DCE), attachment can be made by direct connect, without the need for intervening DCE. The direct connect is made by using either the External Modem Interface (#3701) or the V.35 Interface (#1550), the corresponding host interface feature(s), and a connecting cable. Shown below are the hosts that provide direct connection attachment for the 3274. Only the basic features needed by the 3274 direct connect hosts are listed. These features may have prerequisites, therefore the machine pages for those hosts should also be reviewed. Physical planning manuals for the respective direct connect hosts can provide additional information on the connecting cables.

                                     S
                                  B  D
Attach                 Host       S  L
 Host   Speed (bps)    Feature #  C  C
--------------------------------------
 3705   14.4K,57.6K   #4727(1W)   -  x
 3705   14.4K,57.6K   #4728(1Z)   -  x
 4331   2400          #4801       x  x
 4331   4800          #4801       x  x
 4331   9600          #4801       x  x
--------------------------------------
Attach  Max Cable     3274
 Host    Length       Feature #
----------------------------------
 3705    57m (190')   #1550, #6303
 3705    57m (190')   #1550, #6303
 4331   400m (1,312') #3701, #6302
 4331   200m (656')   #3701, #6302
 4331   100m (328')   #3701, #6302
                          or #6303

Model Description 3274-D01

Model D01 1D

For Local (3272 version) attachment, via a byte multiplexer, selector or *block multiplexer channel, to a virtual storage S/370 processor, or any 4300 processor via a byte multiplexer or block multiplexer channel.

* Attachment to non-DCC subchannel of a block multiplexer channel or to a selector channel is not recommended due to performance considerations which may yield less than maximum throughput.

Attachable Terminals

Category A Terminals:

3178 Model C1, C2: Display Station
3178 Model C3, C4: Display Station (See Note 5)
3191 (See 3191 pages for models): Display Station
3192 (See 3192 pages for models): Display Station
3262 Model 3 & 13: Line Printer
3268 Model 2: Impact Matrix Printer
3268 Model 2C: Color Impact Matrix Printer
3270 Personal Computer (Control Unit Terminal Mode)
3278 Model 1, 2, 3, 4, 5: Display Station (see Note 1)
3279 Model 2A, 2B, 3A, 3B,
3279 Model 2A, 2B, 3A, 3B, S2A, S2B, S3G, 02X, 03X: Color Display Station
3287 Model 1, 2: Impact Matrix Printer
3287 Model 1C, 2C w/#8331: Color Impact Matrix Printer
3289 Model 1, 2: Line Printer
3290 Model 1: Information Panel (No Longer Available as of May 26, 1989)
4245 Models D12, D20 (supported as a 3262 Model 3): Line Printer
4250: APA Printer (see Notes 2 and 3)
5150: Personal Computer (via 3278/79 Emulation Adapter)
5160 with XT/370 Option Kit and 3278/79 Emulation Adapter (Control Unit Terminal Mode only): Personal Computer XT/370
5160 Model 589 (Control Unit Terminal Mode only): Personal Computer XT/370
5170 Model 599 and Model 739 (Control Unit Terminal Mode only): Personal Computer AT/370
5170 with AT/370 Option Kit and 3278/79 Emulation Adapter (Control Unit Terminal Mode only): Personal Computer AT/370
5210 Model G1, G2: Printwheel Printer
6252 D Model (supported as 3262-3) Line Printers
6580 Model A04, A06, A08, A10, B04, B06, B08, B10; w/#8332 and LP 5608-SR9 (see Note 4): Displaywriter System

Notes:

Model 5 cannot be attached to a 3274 Model 1B.
4250 cannot attach to 3274 Models 1B and 1C.
Because of the high data volumes possible with this printer, it is strongly recommended the IBM Aid FIVE3270 be used to predict the effect the 4250 has on subsystem performance.
Two terminal ports are required to attach a Displaywriter System when it includes a printer.
Model C3, C4 support requires RPQs. See "Prerequisites" section in 3178 pages for details.

Category B Terminals:

3277 Model 1, 2: Display Station
3284 Model 1, 2: Impact Matrix Printer
3286 Model 1, 2: Impact Matrix Printer
3287 Model 1, 2 (with 3271/3272 attachment feature): Impact Matrix Printer
3288 Model 2: Line Printer

3274 Control Storage Requirement Tables

Use the following procedure to determine which, if any, EFS features must be ordered on the Model 1D:

Select the Configuration Support option which contains the functions desired. If T is selected, go directly to Table 2, line 6, for EFS feature codes needed, otherwise continue to Step #2.
After determining the desired Configuration Support, refer to the appropriate part of Table 1 and select the features desired:

3274 Model 1D, refer to Table 1, Part 4.

Determine the total Type C and total Type D storage required for the features and functions selected in Step #2.
Add the Type C and Type D totals to determine the total control storage required. If the total is equal to or less than 65,536, no EFS features are required. If the total is greater than 65,536, continue with Step #5.
Refer to Table 2. For Configuration Support A or B, begin at line 1 and work down. For C, begin at line 4 and work down. Stop at the first line that satisfies the control storage requirements determined in Steps 3 and 4. Order the EFS features listed in the last column.

Notes For Table 1:

Configuration Support A Consideration Only: If all three keyboard types (Typewriter, Data Entry and Data Entry-Keypunch-like) are required on display stations attached to the 3274, add 1000 to the Type D storage requirements in addition to that listed in the table.
If the total Type D storage requirement calculated for Category A, plus Category B terminals, exceeds the applicable maximum storage value listed below, use the applicable maximum value.

                    Maximum
Unit              Storage Value
3274-1D               8,844

There is no customizing option nor additional control storage required to support 10 Numeric-only Character Set for Operator Identification Card Reader (#4600) on 3277s (Category B terminals) which are attached to a 3274.
Add the indicated amount for each keyboard type to be used.
The SFAP function is also required when the SCS Support for SFAP (#9661) feature is to be used on 3287 Models 1, 2, 1C or 2C.
SCS Printer Support is required for DCA-LV2 Word Processing applications. This includes those applications which utilize the cut sheet feed attachment feature (#7860) when operating with 2 drawers.
The SFAP function is also required when the Query function is used with 3262 Models 3 and 13, 3268 Model 2, (and 4214 Model 1 in EMEA) printers. The Query function allows the application to interrogate the printer to determine what function is supported.
For 4250 attachment to 3274 Model 1D, the SFAP function is required plus support for one Extended Attribute Terminal for each 4250 attached.
SCS printer support required for 4250 attachment.
A Displaywriter System requires two terminal ports when it includes a printer.

Table 1 - Part 4

3274 Model 1D             TYPE C  TYPE D
----------------------------------------
Model 1D Base (including
  copy) (Choose one)
 Conf. Support A (#9110)  34,500  17,000
 Conf. Support B (#9111)  38,372  17,884
 Conf. Support C (#9112)  39,720  24,900
Category A terminals
  (Choose one)(2,11)
 1 to 8 terminals
  (included in base)           0       0
 1 to 16 terminals             0   2,048
 1 to 24 terminals             0   4,096
 1 to 32 terminals             0   6,144
Keyboards on Cat. A terminals
 (select all that apply,
 choosing at least one)(4)
 Typewriter(1) (3278/3279-
  #4621,#4624,#4627,#4628,
  #4640,#4651, 3178 Model C2)  0     786
 3191 Display Station          0     786
 3192 Display Station          0     786
 3270 PC Computer Control
  Unit Terminal Mode           0     786

Typewriter(1) (3178 Model C3) 0 786 Typewriter(1) (3178 Model C4) 0 786
Data Entry(1) (3278/3279- #4622, 3178 Model C1) 0 786 Data Entry KP(1) (3278/3279-#4623) 0 786

Text (3278/3279-#4629) 0 1,560
APL (3180 Model 130, 3278/ 3279-#4626,#4652) 0 1,560

Category B terminals (Choose one)(2,3) 1 to 4 terminals 4,300 3,724 1 to 8 terminals 4,300 4,748 1 to 12 terminals 4,300 5,772 1 to 16 terminals 4,300 6,796 APL/Text Control Function (Choose one) Conf. Support A or B 1,700 4,600 Conf. Support C 0 0 Copy (Print Key Function) 2,700 0

3289 Text Print Control 0 512
Host-Loadable Printer Authorization Matrix 550 0 Magnetic Rdr Ctrl (3278/ 3279-#4999) (Choose one) 3275/3277-Like 10-Ch Set 600 60 Num & Alpha Char Sets 1,120 316 Color Convergence (Base or Extended Color) 4,296 1,198 ---------------------------------------- The Following Are Available w/ Configuration Support C Only: Structured Field & Attri- bute Processing (SFAP)(9) 4,950 950

(12) Programmed Symbols (PS) 2,700 190 Decompression 900 0 Extended Attribute Termi- nals (add 256 for each terminal) (3268 Model 2C/ 3278/3287-#3610/3279 Model 2B or 3B/4250) 0 #x256

IBM PC Support Attachment (3278/3279-#5315,#5316/ #5325,#5326) 3,200 300

Table 2

*--------------------------------------*
|#|  FACTORS |    SIZE   |FEATURE CODES|
|-|----------|-----------|-------------|
|1|Type C + D|LT/= 65,536|    None     |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |             |
|2|and Type C|LT/= 49,152|#1801 + #3622|
| |and Type D|LT/= 32,768|             |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|3|and Type C|LT/= 49,152|#3627        |
| |and Type D|LT/= 49,152|             |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|4|and Type C|LT/= 65,536|#3625; or    |
| |and Type D|LT/= 32,768|#1801, #3623 |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|5|and Type C|LT/= 65,536|#3625, #3627;|
| |and Type D|LT/= 49,152|or #1801,    |
| |          |           |#3623, #3627 |
|-|----------|-----------|-------------|
| |Type C + D| GT 65,536 |#1801, #3622,|
|6|and Type C|LT/= 65,536|#3625, #3628;|
| |and Type D| GT 49,152 |or #1801,    |
| |          |           |#3623, #3628 |
|-|----------|-----------|-------------|
| |Type C    | GT 65,536 |#1801, #3622,|
|7|and Type C|LT/= 71,680|#3625, #3628;|
| |and Type D|    Any    |or #1801,    |
| |          |           |#3623, #3628 |
|-|----------|-----------|-------------|
|8|Type C    | GT 71,680 |Invalid      |
| |          |           |Configuration|
*--------------------------------------*

Control Storage Functions

APL/Text Control Function: This function, selectable during the customization of a 3274 Model 1D, expands the character handling capability of the 3274 to accommodate the APL, Text, and graphic plot character sets on 3278s, 3268 Model 2, 3262s (text only), 3279, and 3287s attached via Type A Terminal Adapters (#6901, #6902, #6903).

3289 Text Print Control Function: This function, selectable during customization of a 3274 Model 1D, extends the character handling capability of the 3274 to accommodate the text characters (US English only) for the text print feature (#1130) on attached 3289s.

Copy Function:

This function, selectable during the customization of a 3274 Model 1D, enables the copying of the screen contents of an attached 3178 or 3278 to an attached 3268, 3287, 3289, 3262, 5210 through use of the Local Print Key on the display keyboard.

Local Copy Summary

3274 Mdl  Print Key     Host Initiated
1D        Cust. Option  Not Applicable

Note: The 3274 does not support copying the screen contents of an attached display station to an attached 4250.

SFAP Function:

Model Description 3274-21A

Provides the capability of attaching 3270 Information Display System displays and printers to System/3, S/360, S/370, 4300, 303X, 3081, 308X, 3090 processors, 8100 Information System and the 9370 Processor. Models 21A, 21B, 21D, 31A and 31D are for local channel attachment. Models 21C, 31C and 51C are used for communicating in data half-duplex mode via half-duplex or duplex communications facilities.

For S/3 attachment, each of the control units can communicate via Binary Synchronous Communications (BSC) in data half-duplex mode over half-duplex or full duplex communications facilities with a suitably equipped S/3 Model 4, 8, 10, 12, or 15 at speeds up to 9600 bps.

Model 21A A21 For local (SNA version) attachment, via a byte multiplexer, selector, or *block multiplexer channel, to a S/370, 30XX processor; or a 4300 Processor via a byte multiplexer or multiplexer channel.

Attachable Terminals:

Category A Terminals

3178 Model C1, C2: Display Station
3178 Model C3, C4: Display Station (see Note 6)
3179 Model 1: Color Display Station
3179 Model G: Color Graphics Display Station
3180 Model 1: Display Station
3191 (See 3191 pages for models): Display Station
3192 (See 3192 pages for models): Display Station
3193 Model 1, 2: Display Station (see Note 10)
3262 Model 3, 13: Line Printer
3268 Model 2: Impact Matrix Printer
3268 Model 2C: Color Impact Matrix Printer
3270 Personal Computer Control Unit Terminal Mode (See Note 2): 3270 Personal Computer Distributed Function Mode
3278 Model 1, 2, 3, 4, 5: Display Station (see Note 1)
3279 (except Model 2C): Color Display Station
3287 Model 1, 2 w/#8331: Impact Matrix Printer
3287 Model 1C, 2C: Color Impact Matrix Printer
3289 Model 1, 2: Line Printer
3290 (see Note 2): Information Panel Display (No Longer Available as of May 26, 1989)
4028 Model NS1 LaserPrinter
4224 Model 201, 202, 2E2, 2E3: Impact Matrix Printer (See notes 7 and 9)
4224 Model 2C2: Color Impact Matrix Printer (See notes 8 and 9)
4234 Model 1: Dot Band Printer
4245 Model D12, D20: Line Printer
4250: APA Printer (see Notes 3 and 4)
5150: Personal Computer (via 3278/79 Emulation Adapter)
5160 with XT/370 Option Kit and 3278/79 Emulation Adapter (Control Unit Terminal Mode): Personal Computer XT/370 (See Note 2)
5170 with AT/370 Option Kit and 3278/79 Emulation Adapter (Control Unit Terminal Mode): Personal Computer AT/370 (See Note 2)
5160 Model 589 (Control Unit Terminal Mode only): Personal Computer XT/370 (See Note 2)
5170 Model 599 and Model 739 (Control Unit Terminal Mode only): Personal Computer AT/370 (See Note 2)
5210 Model G1, G2: Printwheel Printer
6252 D Model Line Printers
6262 D Models: Line Printer
6850 Model A04. A06, A08, A10, B04, B06, B08, B10; w/#8332 and LP 5608-SR9 (see Note 5): Displaywriter System

Notes:

Model 5 or a 3180 Model 1 emulating a Model 5 cannot be attached to a 3274 Model 21 or a Model 51C without Extended Function Store #1800.
3274 Model 31X and 51C.
4250 cannot attach to 3274 Model 21X. Attachment to 3274 Models 31C and 51C requires printer RPQ 7B0980.
Because of the high data volumes possible with this printer, it is strongly recommended that the "IBM 3274 Performance Guidelines, Technical Bulletin", ZZ20-4167, IBM be consulted to predict the effect the 4250 has on subsystem performance.
Two terminals ports are required to attach a Displaywriter System when it includes a printer.
Model C3 and C4 support requires RPQs. See "Prerequisites" section of the 3178 pages for details.
Emulates 3268 Model 2.
Emulates 3268 Model 2C except Programmed Symbols are not supported.
When attaching the 4224 to a control unit using Configuration Support D at release 65.0, contact the NSD representative for support.
RPQ 8K 1311 should be installed on 3274 Model 31A.

Category B Terminals*:

3277 Model 1, 2: Display Station
3284 Model 1, 2: Impact Matrix Printer
3286 Model 1, 2: Impact Matrix Printer
3287 Model 1, 2 (with 3271/3272 attachment feature): Impact Matrix Printer
3288 Model 2: Line Printer
5160 Model 568, 588: IBM Personal Computer XT/370
5160 Model 087 with XT/370 Option (1503891): IBM Personal Computer
IBM Personal Computer XT with XT/370 Option: IBM Personal Computer XT

* Category B Terminals cannot be attached to a 3274 Model 21A, and 21C/SNA.

** Category B Terminals cannot be attached to a Model 51C without Extended Function Store #1800.

Model 21s have 64K bytes of control storage and do not support all terminal features.

The basic Model 21s allow attachment of up to eight Category A terminals. Two types of terminal adapter features are offered to attach additional terminals. The two types can be ordered in various combinations to attach up to a maximum cluster of 32 terminals -- a maximum of 16 of the terminals can be Category B terminals.

Note: The 3274 Models 21C are functionally equivalent to the 3274 Model 1C.

Control Storage Requirement Tables (Models 21A)

After the desired "Special Features" have been selected, the control storage requirement must be determined by using the appropriate table below. Some combinations of functions and features may exceed the capacity of the control storage in the Models 21A without EFS.

Refer to the appropriate part of Table 1 and select the features desired:

3274 Model 21A, refer to Table 1, Part 1

Determine the total storage requirements for the features selected in Step #1.
If the total storage requirement calculated in Step #2 is equal to or less than 65,536, the Model 21 or 51C without EFS can be used. However, if step #2 storage requirement is greater than 65,536, the Model 21 Control Unit or Model 51C without EFS cannot be used and a Model 31 Control Unit or Model 51C with EFS is required.

Notes for Table 1

Configuration Support A Consideration Only: If all three keyboard types (Typewriter, Data Entry, and Date Entry/Keypunch-like) are required on display stations attached to the 3274, add 1,000 to the storage requirements in addition to those listed in the table.
There is no customizing option nor additional control storage required to support 10 Numeric-only Character Set for Operator Identification Card Reader (#4600) on 3277s (Category B terminals) which are attached to a 3274.
Add the indicated amount for each keyboard type to be used.
A 6580 requires two terminal ports when it includes a printer.

Table 1 - Part 1

                                     Stg
3274 Model 21A                     Reqts
----------------------------------------
Model 21A (including copy)
 Configuration Support A (#9110)  54,800
Category A terminals
  (Choose one)(5)
 1 to 8 terminals (incl. in base)      0
 1 to 16 terminals                 2,048
 1 to 24 terminals                 4,096
 1 to 32 terminals                 6,144
Keyboards on Category A terminals
  (select all that apply,
  choosing at least one)(4)
 Typewriter(1) (3179 Model 1, 3180
   Model 1-#4600, 3278/3279-#4621,
   #4627, 3178 Model C2)             786
 3191 Display Station                786
 3192 Display Station                786
 3270 Personal Computer
  Control Unit Terminal Mode