Process control system with multiple module sequence options
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United States of America Patent
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Mar 20, 1990
Grant Date -
N/A
app pub date -
Sep 30, 1987
filing date -
Sep 30, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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.
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