04910691 is referenced by 139 patents and cites 14 patents.

An integrated system for process control in which a process supervisor procedure (which is preferably the top-level procedure) is configured as a modular software structure, with modules which can be revised by a user at any time without significantly interrupting the operation of the process supervisor. A user can define or redefine modules by editing highly constrained templates, which preferably include module timing and sequencing options including: block becomes active if another specified block has become active; block becomes active if a new value has been entered for a specified data source; block becomes active if a specified time of inactivity has elapsed; and combinations of these.

Title
Process control system with multiple module sequence options
Application Number
7/103124
Publication Number
4910691
Application Date
September 30, 1987
Publication Date
March 20, 1990
Inventor
Richard D Skeirik
Newark
DE, US
Agent
Saidman Sterne Kessler & Goldstein
Assignee
E I Du Pont de Nemours & Co
DE, US
IPC
G06F 15/18
G06F 15/46
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