When the Drain Cycle is finished (what 2 things tell you that it is?) then reset RTO Mix Timer, energize "Auto Stop", and unlatch "Drain Cycle".ĮDIT: If I had known you were working on the Batch Mix Simulator Exercises 1 and 2, I could have told you that you did not need to do any Data Table edits, changes, or even look at the Data Tables at all. (What DONE bit tells you that the mixing cycle is finished?) Latch "Step 3: Drain Cycle" and unlatch "Mix Cycle" when the Mix Cycle is finished. (What 2 things each show you that the Tank is filled?) Latch "Step 2: Mix Cycle" when the Tank is filled in Step 1.
You need about 3 now: Mix Cycle B3:0/0, and Drain Cycle B3:0/1, and Auto Stop B3:0/2. It should give you some ideas about the flags. I think the youtube video is just for guidance of what should happen when tha batch is running but i hadnt noticed it was an advanced one. im sure i have to go into the plcs momory. (It would be smart to go ahead and use the RTO timer so that your basic layout will also work for the next Batch Mix exercises.)Īt the moment the instructions from a) to q) are almost exactly that i have programed except the run light doesnt return to idle after pump 3 is done which is instruction O). That requirement is only added in Exercise 3, and also required by Advanced Exercises A1 and A2. Notice that for your homework (Exercises 1 and 2 described in your student intructions) there is NO requirement for the process to have the ability to be stopped and restarted in mid-cycle. Now your actual instructions are for modified Exercises 1 and 2, and are NOT for the one in the YouTube video, which is Advanced Exercise A1 that uses both Pump 1 and Pump 2, and the selector switch Position "A" for a single batch only.