hi all,

i'm new to plc programming and i was looking for some help with a project. i have 2 pumps pumping out water from a tank  . one pump start at a level low level say 1 m the other  pump starts at 2 m. Both of the pumps are to stop at  0.5 m level .

There are two level switches for minimum and maximum . analog input range is 4-20mA corresponding 0-4 m of water level

if one pump  fails the other should cover ,pumps to change priority of starting every week and two pumps can not start at the same time.

pumps should be running  on automatic. 

anyone who can do this program on tia portal . thanks 

Which controller?

Which TIA version?

Which 1212C CPU?
AC/DC/Relay?
DC/DC/DC?
DC/DC/Relay?

Which firmware version?

 1221 DI 8 x 24VDC 6ES7 221--1BF0-0XB0

1231 AI card 4X13 BIT  6ES7 231-4HD30-0XB

Have a look at this is thread.