July 2004
Intermediate to advanced
352 pages
9h 30m
English
Content preview from Mitsubishi FX Programmable Logic Controllers, 2nd Edition
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//INTEGRAS/ELS/PAGINATION/ELSEVIER UK/PLC/3B2/FINALS-7-6-04/ 0750656794-CH028.3D – 294 – [293–297/5]
19.6.2004 9:20PM
28.2Stockcontrolapplication^INDEX1
Thefollowingapplicationispartofasystem,inwhichthecontentsoffourdataregisters
D20–D23canbeenteredintoalook-uptableandthendisplayed.
Thiscouldbeusedinastockcontrolsystem,inwhichfourdifferentcomponentsare
constantlybeingputintoandremovedfromastoragearea.
Inpracticeabar-codereaderwouldbeusedtoreadthetypeandnumberof
componentscomingintothewarehouseandthenusingaPLC,transferthedatato
theappropriatedataregisterinthelook-uptable.
Suchasystemwouldenableconstantmonitoringofthestocklevelsofthefour
components.
28.
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