logixpro traffic light exercise 2 solution

The process should restart where it left off if the the Start button is pressed following a Stop.Ħ Exercise #1 ‐‐‐ Single Compressor Operation In this first exercise, the pressure switch PE1 (I:1/02) is to be utilized alone to control the operation of motor (O:2/0) and maintain the compressor's storage tank pressure. The pressure range will be dictated by the settings shown for PE1. Using your mouse, adjust both the limit (make 120PSI), and the adjustable span setting (20PSI) of PE1 to match the settings shown below.Īllow the user to start and stop the air system using the appropriate panel mounted switches, and ensure that the 'Run' lamp is illuminated whenever the system is enabled.

The STANDBY light should light and the process should halt when the Stop button is pressed.Ensure that the RUN light is energized when the mixer or either pump is running.Modify your program so that the filling and emptying sequence will repeat continuously once it has been started by the initial pressing of the Start switch. Once the tank is empty again, pressing the Start switch will cause the sequence to repeat.Is to be drained. Flowmeter 3 will be employed to decrement the existing counter, and draining will be allowed to continue till the counters accumulator reaches zero. When the mixing is complete, drain pump P3 is to be started and the tank.The mixer will run for 8 seconds once the tank is full.Modify your program so that it meets the following additional requirements: The TOD instruction can be located in the Compute/Math group of instructions in the Edit Panel. Be sure to alter the Source entry to match the counter number you are using.Ĥ Exercise #2 ‐‐ Emptying the Batch Mix Tank If correctly entered, the TOD (To BCD) instruction will take the integer value in the counters accumulator, convert it to Binary Coded Decimal, and then move (copy) this BCD value to the control panel LED display (O:4).

You might consider using a bit from the free‐running timer located in S2:4 to create the cautionary flashing effect. When the Amber light appears, the Walk Sign will commence to flash On and Off and continue to do so until the Red signal appears.Once the Walk Sign is illuminated, it will remain so for the duration of the Green signal.If the Green light is already illuminated when the button is pressed then the Walk signal sequence will be delayed until the next Red to Green transistion ocurrs.When depressed, the crosswalk pushbutton will cause the appropriate Walk Sign to be illuminated at the next occurence of a Red to Green transition for the appropriate direction.

This is not necessarily a word comparison exercise, but it's a task that needs doing, and you should now have sufficient expertise to accomplish it. 2 Exercise #2 ‐‐ Dealing with Pedestrians Modify your program so that the crosswalks are also controlled.

Logixpro traffic light exercise 2 solution