if any one can help?? im busy with a project the requires me to use a flow meter(15-300l/min,4-20ma) im controlling a hydraulic cylinder and it has a flow meter on the forward action i have 4-20mA FX3U-4AD-ADP Analog Card i have to move the hydraulic cylinder when it stops it must save the data value and them when i move the hydraulic cylinder it needs to add to the Saved Data and then if stopped it needs to save the data again im not sure on how to store and retrieve the data