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IBM 1800 Data Acquisition and Control System

From Alfawiki
IBM 1800 Data Acquisition and Control System
Company typeComputer system
IndustryProcess control, Industrial automation
FoundedNovember 30, 1964; 61 years ago (1964-11-30)
ProductsProcess control computer system

The IBM 1800 Data Acquisition and Control System (DACS) represented a process control adaptation of the IBM 1130, distinguished by the inclusion of two extra instructions (CMP and DCM), improved input/output functionality, cycle-stealing capabilities similar to a selector channel, and the addition of three hardware index registers.

Released on November 30, 1964, IBM marketed the 1800 as a versatile system designed for tasks such as monitoring manufacturing lines, managing steel production processes, or evaluating missile test data.

Overview

In contrast to the desk-style IBM 1130, the IBM 1800 was installed in six-foot-tall EIA Standard 19-inch racks, which were somewhat taller than those utilized by contemporary S/360 models, although they shared comparable internal logic gates and power supply units.

The IBM 1500 instructional system, launched in March 1966, was built upon either the IBM 1130 or IBM 1800 platforms and supported audiovisual-equipped setups for up to 32 student workstations.

Each of the IBM 1750, 2750, and 3750 Switching Systems was powered by a pair of IBM 1800 units configured with automatic switchover functionality.

Components

The IBM 1800 DACS included the following elements:

  • Digital-to-Analog (D/A) Converter
  • Analog-to-Digital (A/D) Converter
  • IBM 1801 Processor Controller equipped with an operator interface panel
  • IBM 1802 Processor Controller featuring an operator panel plus adapters for 2401/2402 Magnetic Tape Units
  • IBM 1803 Core Storage Expansion Module
  • IBM 1826 I/O Expansion Chassis providing communications I/O, System/360 channel support, and connectivity for IBM 279x devices
  • IBM 1828 Process Expansion Unit allowing additional D/A or A/D converters or multiplexors; remote configurations available through RPQ
  • IBM 1810 Disk Drive (comparable to the IBM 1130's 2310)
  • IBM 1816 Printer Keyboard (system printer)
  • IBM 1851 Reed Relay Analog Multiplexor
  • IBM 1854 Solid State Analog Multiplexor
  • IBM 1894 RPQ hardware options supporting peripherals such as IBM 109x data entry devices
  • Input/output peripherals including:
    • IBM 1053 Printer
    • IBM 1054 Paper Tape Reader Unit
    • IBM 1055 Paper Tape Punch Unit
    • IBM 1442 Card Reader/Punch Unit
    • IBM 1443 Printer
    • IBM 1627 Plotter
    • Magnetic Tape Units (2401 or 2402) connected via adapters in the IBM 1802 controller
    • IBM 2311 DASD accessed through an IBM 2841 Control Unit linked to the IBM 1826 channel; MPX OS allowed mapping two IBM 1810 disks per IBM 2311 drive as Format 5 DSCB for S/360 OS compatibility
    • IBM 2260 CRT terminal connected through an IBM 2848 Control Unit on the IBM1826 channel
    • IBM 2790 Data Communication System, an early token ring LAN managed by the IBM1800

Use

Globally, the IBM 1800 systems found primary application within process industry facilities.

The final four IBM 1800 units operating at Ontario's Pickering Nuclear Generating Station were decommissioned in June 2010. However, Pickering maintains four ES-1800 computers—hardware emulators of the IBM 1800 created by Cable & Computer Technologies. An online video demonstrates the Pickering site's IBM 1800 boot sequence.

Prior to their replacement by Honeywell TDC3000 process control systems in 1984, Exxon USA utilized eighteen IBM 1800 units distributed across its five refinery locations.

External links

fr:IBM 1130 et 1800

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