Logixpro Simulator Batch Mixing Exe 3

[chartz346]

Can some one please help me I have done Logixpro simulator's Batch mixing Exercise 3 got everything to work except when you are running the simulator and hit the stop button on the unloading phase Pump 3 running when you release the button it reverses pump 1 comes on and it starts to fill again. It will run automatically on its own just having problem with this one area. I tried "Latch/Unlatch" but did not seem to get it.

I am attaching a picture of my program any help would greatly be apprieciated

Thank You
Chartz

 

[Lancie1]

You probably need to set a bit that says "TANK FILLING is DONE, so now start the MIXING cycle". An example of how to do this is in Rung 006. The reason that you need this is that if the tank has filled ONCE, and then later you hit STOP, unless you have a latched bit (a so-called FLAG bit) that recorded what happened in the past, your program will see that the tank is no longer full and start all over again. Use a latched bit to tell it "hey, its later than you think and we have already filled the tank once and are now working on either the mix or drain cycle".

Another suggestion would be to move your Stop and Start pushbuttons to your Rung 007, and make the RUN Light into a SYSTEM RUN RELAY & LIGHT. Then when you hit STOP, the RUN relay goes off, the RUN light goes off, and all the rungs where you put XIC O:2/5 will be turned off and your should-be RTO mix timer (change that TON to a RTO) will be frozen in place until START is agian pressed.

Let me know if you need more help.

 

[Lancie1]

PS: Use your new latchable MIXING CYCLE bit (along with a XIC RUN RELAY bit) to start your mix RTO-type timer - not the Tank Level Full sensor. Unlatch the MIXING CYCLE when the DRAIN CYCLE has started. Then unlatch the DRAIN CYCLE when the tank level is 0 or the tank Low Level switch goes OFF.

 

[chartz346]

Lancie1 I am still having trouble I tried some things you said and it seems every time I change something the first cycle works then when go to restart the batching it turns on both pumps and flow meters. cant figure how to attach my program to here it wont let me attach like I did yesterday

 

[Lancie1]

Chartz,

To attach a LogixPro program, first compress the file and save as a ZIP file type. Then you can upload it to this site. Also look in the "Downloads" area, Allen Bradly type, for some example LogixPro Batch Mix programs that you download to your computer. Look for this file:
LogixPro BATCH_SIMULATOR_EX_A2.rsl

 

[Lancie1]

I can't figure how to attach my program to here. It won't let me attach like I did yesterday.

Did you remember to log in to the site with your username and password? Did you make your attachment one of the allowed file types (ZIP, PDF, DOC, and JPG are commonly used). Your attachment file size has to be no larger than the allowed size.