ANALOG INPUT UNIT AND PROGRAMMABLE CONTROLLER

摘要

An analog input unit configured to be included in a programmable controller and to sequentially convert analog values input from outside into digital values, the analog input unit includes: an analog-to-digital conversion unit that converts an analog value being a measurement value of a flow meter into a digital value; a flow computation unit that calculates an instantaneous flow and a total integrated flow that is obtained by integrating a flow per setting time set in advance, based on the digital value from the analog-to-digital conversion unit; and a storage unit that includes a flow storage area for storing therein the instantaneous flow and the total integrated flow calculated by the flow computation unit.