Analog input unit and programmable controller

An analog input unit, which is provided in a programmable controller and serially converts externally-input analog values into digital values, includes: an analog-digital converter (120) that converts the analog values, as measured by a flow meter, into digital values; a flow calculation unit (131)...

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Bibliographic Details
Main Authors MAKIMOTO YUJI, KAMEOKA HIRONORI, FU XUEZHI
Format Patent
LanguageChinese
English
Published 18.09.2013
Subjects
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
TESTING
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Summary:An analog input unit, which is provided in a programmable controller and serially converts externally-input analog values into digital values, includes: an analog-digital converter (120) that converts the analog values, as measured by a flow meter, into digital values; a flow calculation unit (131) that calculates an instantaneous flow as well as a total integrated flow that integrates the flow rate for a preset set time on the basis of the digital values from the analog-digital converter; and a storage unit (140) comprising a flow storage area (143) that stores the instantaneous flow and the total integrated flow calculated by the flow calculation unit.
Bibliography:Application Number: CN201180065422