Alternated pumps usage every weak

[hidroela 0]

I have 3 pumps I would like to run each one for a weak at a time In other words pump 1 this weak pump 2 next weak and pump 3 the next weak and start the cycle all over again I am using plc 5 and rslogix 5 any small ladder example would be appreciated

[b2barker 0]

Try something like this. s:20 is the day in the real time clock. If it changes make a pulse. count 7 pulses then count 3 cycles. Actually I think this will do 8 day cycles, but you get the point. All you need to do use c5:1.ACC = 0 to run pump 1, c5:1.ACC = 1 for pump 2 and c5:1.ACC = 2 for pump 3.

[hidroela 0]

I got this from another forum