fresh

OkiePC, just wanted to say Thanks for re-writing that mixing tank program. I will study it carefully. bcarlton, I see what your saying about the oscillation-type flow in the original program.

I hope this thread can help beginners learns the basics of PLC programming on the RSLogix Micro software (because its free). And I hope more experienced engineers can show us what we're doing wrong and the optimal way to program for these simulated real-world systems. So it's pretty simple, 1. Post a graphical representation and text description of the automation process to be performed 2. Post your PLC program written in RSlogix Micro. --------------------------------------------------------------------------------------------------------------------------------------------- Here's a simple mixing tank. RSLogix program. MixingTank.RSS When the RUN switch is activated Pump1 and Pump2 turn ON as long as the tanks are not full, when the tanks become full limit switch 1 and 3 close and turn off the Pumps. Then (spring-return) solenoid Valves 1 and 2 open and release the contents of both tanks into the mixing tank, A timer keep liquid there for 120 seconds, then empties the mixing tank by opening Valve 3 until the empty sensor stops it. Program repeats cycle. This is the the first program I've written so probably not correct, Any help is greatly appreciated. Other beginners like me feel free to post your programs in this thread and we can learn from each other. Thanks!