To make it a little easier to see what is happening with the counter, you might want to add the following rung to the end of your program. While testing, utilize the "Reset Simulation" and the "Reset Timers and Counters" entries in the Simulations menu to re-start your program.
The filling operation is to halt immediately if the stop switch is pressed.When the count reaches a value where the tank is approximately 90% full, the pump is to be shut-off and and the control panels FULL light is to be energized.The pulses generated by Flowmeter 1 should be used to increment a counter. When the Start switch (I:1/0) is pressed, pump P1 will be energized and the tank will start to fill.Using your knowledge of PLC counters, design a program to meet the following requirements: From the Simulations Menu at the top of the screen, Select the Batch Mixing Simulation.I will attach a corrected version of your program, as I think you meant it to work.Exercise #1 - Filling the Batch Mixing Tank That immediately causes rung 14 to activate the B3:1/4 Manual Bit, which stops the system. Rung 10 causes it to halt as soon as the tank is full, because the tank starts off empty and the Low Level Switch I:1/3 is ON, latching your flag B3:1/3 TANK EMPTY. Put them in a logical order: Step 1 FILL, Step 2 MIX, Step 3 HEAT (apparently, but the original LogixPro exercise calls for heating before mixing - resolve this conflict), then LAST should be the Step 4 DRAIN.Īs is, you program cannot operate. That makes it hard to follow your non-logic. You have your steps jumbled up and out-of-order in the program. There should be no other conditions for O:2/6 other than NOT O:2/5.ģ. If it is NOT in RUN mode (O:2/5 RUN Lamp is OFF), then it is in IDLE mode and O:2/6 should be ON. The Batch Simulator is either in RUN mode, or it is not in RUN mode. This is a binary case of either ONE, or the OTHER, but never both. Rung 001: you do not need the parallel branch with I:1/3 Low Level Switch. This indicates that you do not know how the program works, and do not understand what each rung is supposed to do.Ģ. No rung comments, a sure way to knock off 10 points!. I see a few things that I would use to reduce your homework score.ġ.
0 kommentar(er)
