Configurations (Terminals)
The following control units can be remotely attached to leased lines via
a 2701 Data Adapter Unit, a 2703 Transmission Control Unit, a 3704/3705 Communications Controller in emulation mode, or an Integrated Communications Adapter (ICA) to support 3270 devices: IBM 3271 Control Unit Model 2 for attachment of up to thirty-two 3277
Display Stations Model 2, 3284 Printers Model 2, 3286 Printers Model 2, 3287 Printers Models 1 and 2, and 3288 Line Printers Model 2. To
support this configuration, the following may be required:
--Device Adapter feature (13250) is required if more than 4 devices
are attached to the 3271. Up to 4 additional devices can be
attached with each device adapter.
--A 3271/3272 Attachment (18330) is required to attach each 3287
Printer Model 1 or 2. --Copy feature (11550) is required to use the VM/370 full-screen copy
function.
--Transmission Speed feature (17820 or 17821) is required. TBM Control nnit Model 1C (snpported a l271) fnr of up to 32 display stations and printers. All of the 32 devices
can be 3278 Display Stations Models 2, 3, and 41 (supported as
327 7s), 3287 Printers Models 1 and 2, (supported as 3284s or 3286s),
and 3289 Line Printers Models 1 and 2. (supported as 3288s). A
maximum of 16 of the 32 devices can be 3277 Display Stations Model 2, 3284 Printers Model 2, 3286 Printers Model 2, 3287 Printers, Models 1
and 2, and 3288 Line Printers Model 2. To support this
configuration, the following are required:
--The basic 3274 Control Unit permits attachment of up to 8 devices
(3278, 3287, and 3289). At least one 3278 is required.
--Each of Terminal Adapter Types Al, A2, and A3 (16901, 16902, and 16903) permits the attachment of up to 8 additional devices per
adapter (types 3278, 3287, and 3289). Only one of each type
terminal adapter is permitted. Terminal Adapter Type A1 is a
prerequisite to Type A2, and Type A2 is a prerequisite to Type A3.
--Terminal Adapter Type Bl (17802) permits the attachment of up to 4 additional devices (types 3277,3284, 3286, 3287, and 3288). Only one adapter is permitted.
--Each of Terminal Adapter Types B2, B3, and B4 (17803, 17804, and 17805) permits' the attachment of 4 additional devices per adapter
(types 3277, 3284, 3286, 3287, and 3288). Only 1 of each type of
terminal adapter is permitted. Terminal Adapter Type B1 is a
prerequisite to Type B2, Type B2 is a prerequisite to Type B3, and
Type B3 is a prerequisite to Type B4. Terminal Adapter Types A and B are mutually exclusive.
--A 3274/3276 Attachment (18331) is required on the printer for each
3287 Printer Kodel 1 or 2 that attaches to the basic 3274 Control Unit, or that attaches to Terminal Adapter Types Al, A2, or A3. A 3271/3272 Attachment (18330) is required on the printer for each
3287 Printer Model 1 or 2 that attaches to Terminal Adapter Types
Bl, B2, B3, or B4. --Copy feature (11550) is required if you are planning to use the VM/370 full-screen copy function. IModels 3 and 4 are supported as Model 2 via hardware default.
116 IBM VK/370 Planning and System Generation Guide
Configurations (Terminals)
--Device Adapter feature (#3250) is required
devices are attached to the 3271. Up to four
can be attached with each Device Adapter.
if more than four
additional devices
--Transmission Speed feature (#7820 or 17821) is required.
--Control Storage Expansion feature (#1801) provides the ability to
access control unit storage addresses above 64K.
--Extended Function Storage feature (#3622) provides additional
storage required to !$1,1pport particular attachments or
configurations. Control Storage Expansion feature ("801) is a
prerequisite.
--Each 3274 Model lC requires a Common Communications Adapter feature ('6302) and an External Modem Interface ('3701). IBM 3276 Control Unit Display Station Models 2, 3, and 41 (supported
as a 3271) for attachment of up to 7 additional 3278 Display Stations Models 2, 3, and 41 (supported as 3277s), 3287 Printers Models 1 and
2, (supported as 3284s or 3286s), and 3289 Printers Models 1 and 2
(supported on a 3276). To support this configuration, the following
are required:
--The basic 3276 Control Unit Display Station contains 1 integral
display station, (supported as a 3277), and permits a ttachmen t of
either 1 3278 Display Station Model 2, 3, and 41 (supported as a
3217) or 1 3287 Printer Models 1 and 2. (supported as a 3284 or
3286).
--Terminal Adapter No. 1 (13255) permits attachment of up to 2
additional devices (3278s,3287s and 3289s). Only 1 adapter is
permitted.
--Terminal Adapter No. 2 ('3256) permits attachment of up to 2
additional devices (3278s, 3287s and 3289s). Only 1 adapter is
permitted. Terminal Adapter No. 1 ('3255) is a prerequisite.
--Terminal Adapter No. 3 (#3257) permits attachment of up to 2
additional devices (3278s, 3287s and 3289s). Only 1 adapter is
permitted. Terminal Adapter No.2 (t3256) is a prerequisite.
--A 3274/3276 Attachment ('8331) is required for each 3287 Printer Model 1 or 2.
--Each 3276 requires one of the Communications features ('6301 or 16302) and either the External Modem Interface (#3701) or the 1200 BPS Integrated Modem feature (15500). The following control unit is remotely attached to either leased or
switched lines via a 2701 Data Adapter Unit, a 2703 Transmission Control
Unit, a 3704/3705 Communications Controller in emulation mode, or an
Integrated Communication Adapter (ICA) to support 3270 devices: IBM 3275 Display Station MOdel 2 standalone control unit and display
station. A 3284 Printer Model 3 or 3286 Printer Model 3 can be
attached. Also, the following may be required:
--For the 3275 to be used on a switched line, Dial feature ('3440) is
required.
--Transmission Speed feature ('7820 or 17821) is required. lModels 3 and 4 are supported as Model 2 via hardware default. Part 1. Planning for System Generation 117
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