Topic: predefined program units

Summary

Industrial users do not want to program in terms of operations provided by a programming system. Instead they want fixed program units written specifically for an application. The program units may be parameterized and interconnected. They usually correspond to physical devices or well known functions. By using standard components, development is rapid, reliability enhanced, and programs are portable. There's just less to learn before using the software. (cbb 5/80)

Subtopic: end-user setup of predefined modules

Quote: with fixed program units, with customer must compromise but gains standard units; easy to use by low-level personnel [»controleng]

QuoteRef: controleng ;;4/76 75 Amer. Chain & Cable BRISTOL process controller: "It doesn't require a computer programmer; a plant or process engineer can design and modify a control system."

QuoteRef: controleng ;;4/76 75 Amer. Chain & Cable BRISTOL: handles sensing, monitoring, processing, controlling, communication, reporting through predefined modules.

Subtopic: component software

Quote: ACCOL language uses a block diagram with standard software modules [»controleng, OK]

Quote: Controlware consists of preprogrammed software modules for forming control loops [»instrumentcontrol]

Subtopic: parameterized algorithms

QuoteRef: controleng ;;1/76 29 TDC2000 large control system, 28 parameterized algorithms for controlling, computer network

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