Method and apparatus for displaying sequential function chart elements
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United States of America Patent
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Jun 20, 1995
Issued Date -
N/A
app pub date -
Jan 31, 1994
filing date -
Sep 4, 1989
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A programmable monitoring unit which is adapted for simplifying the programming and display of user programs in a programmable controller using a sequential function charting technique. In a first embodiment, the display of the SFC data is easily compressed such that a combined display element chart is accessed by inputting a first and a second display element and a combined element representing the first and second inputs are displayed in a single display area. In a second embodiment, the present invention provides a means for readily displaying the functional status and changes of transactions based on a program's operational cycles in order to facilitate the debugging of the program.
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