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Mitsubishi FX Programmable Logic Controllers, 2nd Edition
book

Mitsubishi FX Programmable Logic Controllers, 2nd Edition

by John Ridley
July 2004
Intermediate to advanced content levelIntermediate to advanced
352 pages
9h 30m
English
Newnes
Content preview from Mitsubishi FX Programmable Logic Controllers, 2nd Edition
//INTEGRAS/ELS/PAGINATION/ELSEVIER UK/PLC/3B2/FINALS-7-6-04/0750656794-CH020.3D 206 [200–213/14]
19.6.2004 9:16PM
20.4 RPM cou nter ^ REV1
The project REV1 counts pulses during a 5-sec timing period and then displays speed in
RPM (revs/min).
The pulses are input via X0 and for the purpose of this project are assumed to be
obtained from an inductive proximity detector mounted in close proximity to a four-
tooth gear wheel connected to a rotating shaft (refer page 200).
The seven-segment displ ay is used to display the speed of the shaft in RPM.
FromthetimingwaveformsshowninFigure20.5,itcanbeseenthateightpulsesare
input during the 5-sec timing period. ...
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Publisher Resources

ISBN: 9780750656795