thnx for your fast reply ivo ,,,
for example i have the following data for project:-
water tank filling by pump and drain by full open-close valve and analog level sensor .
SO i need to make program to control and monitor the process with s7-300 plc and wincc flexible like this way:-
show the level changes at the operation panel and the state of the valve (open -close)and monitor the flow (the signal come from flow meter 4-20mA)and show high alarm for setpoint high level
note :- the valve is controlled by 2 set point from the analog level sensor
best regards for your help