Programmable logic controller override output board
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 21, 2002
Grant Date -
N/A
app pub date -
Sep 20, 2000
filing date -
Sep 20, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention is an override board releasably mounted in a programmable logic controller. The override board is used to control an individual output of the programmable logic controller. The override board includes a manual switch mounted to a printed circuit board assembly. The manual switch has an 'auto' position, an 'on' position and an 'off' position. An output device is also mounted to the printed circuit board assembly and is electrically connected to the manual switch. Placing the manual switch in the 'auto' position transfers control of the override board to the programmable logic controller. Placing the manual switch in the 'on' position energizes the output device. Placing the manual switch in the 'off' position de-energizes the output device.
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