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TMR002.rsl

Required:TLP LogixPro, CD Version or Internet Version.TMR002.rsl project.

Brief description:A. Flasher circuit 1 (O:2/01) is a two timer flasherset for a 50% on and 50% off, 5 second flash rate.T4:1 and T4:2 timers are used. Each timer has atime base of 0.1 seconds and a preset value of 50.So 5 seconds on and 5 seconds off.

B. Flasher circuit 2 (O:2/02) uses a single timer T4:3.The offset is entered with the I:5 BCD switches anduses an LES instruction to compare T4:4 timer's accumulatorvalue with the value entered from the BCD switches.

C. Flasher circuit 3 (O:2/03) uses a single timer T4:4.A contact is programmed in the ladder logic that referencesan accumulator bit from T4:4 timer's accumulator file.

D. Flasher circuit 4 (O:2/04) uses a single timer T4:5.The flash rate and offset is set by I:5 BCD input sitches.

Below the "How to Begin" is the list of I/O, Instructionsand files used in this project.

How to Begin:1. Start TLP LogixPro program.2. Open TMR002.rsl.3. Click Simulations drop dowm menu item and

select I/O Simulation.4. Go online to the PLC simulator.5. Click the DownLoad button.

6. Click the RUN button.7. With the project downloaded and running outputO:2/01 is flashing at a rate set by T4:1 andT4:2 preset value. 5 second on and 5 secondoff flash rate. O:2/03 is flashing at a rateset by the accumulator bit choosen from T4:4'saccumlator.

8. Click the Start Switch I:1/00 to Close inputswitch and begin process. Output O:2/00 beginsto flash at the same rate as O:2/01 during thestart-up duration of t4:0 preset value. Whent4:0 timer is done O:2/00 lights solid.

9. If you look at the BCD Display controlled by O:6

you will see the display reflecting T4:4 accumulator10. Click on input I:3/00 in the I/O Simulator window

to close switch. The BCD Display will now reflectt4:3 timer's accumulator value.

11. Click input switch I:1/01 to close. You can nowenter a one to two digit number (0 to 99) on the BCDinput switches at I:5 to set the offset flash ratefor outout O:2/02. If you enter the value of 50 theflash rate offset will be 50/50.

12. Click input switch I:1/01 to open input. Then set BCD

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input switches all to zero.13. Click to close input switch I:1/02. You can now enter

a number to set the flash rate for O:2/04. The valuethat is entered references which accumulator bit orbits from T4:5 timer's accumulator that will set theflash rate. Entering numbers 1,2,4 or 8 will establisha 50/50 offset but different flash rates. An interestingview is what the integer files are doing (this circuituses an AND instruction). Right click the AND instructionthen left click the "Go To Data Tables" menu item. Clickthe Tables drop down arrow and select N7: integer menuitem. Observe N7:5 and N7:6, every time N7:5 and N7:6 arethe same O:2/04 lights.

14. Click the X button (normally the window close button) onthe ProSim Simulations window to view the Project Tree.

15. There are so many things you can learn about PLC programmigfrom this simulator by just changing preset values, editingand changing instructions. Remember to check the "Data Tables"to see what the processor is doing with the data you arestoring and controlling, so have fun learning.

Below is the list of I/O, Instructions and filesused in this project:

Inputs Used:I:1/00 Start SwitchI:1/01 Flash 2 Offset EnableI:1/02 Flash 4 Offset EnableI:3/00 Display Control SwitchI:5 Input Word Used BCD Input Switches

Outputs Used:O:2/00 Start OutputO:2/01 Flash 1 OutputO:2/02 Flash 2 OutputO:2/03 Flash 3 OutputO:2/04 Flash 4 Output

O:6 Output Word Used BCD Display

Instructions Used:TON T4:0 Start Timer: Time Base=0.1, Preset=100TON T4:1 Flash Off Timer: Time Base=0.1, Preset=50TON T4:2 Flash On Timer: Time Base=0.1, Preset=50TON T4:3 Flash 2 Timer: Time Base=0.1, Preset=100TON T4:4 Flash 3 Timer: Time Base=0.1, Preset=3200TON T4:5 Flash 4 Timer: Time Base=0.1, Preset=100

MOV Move Instruction (Move/Logical)FRD Convert From BCD (Compute/Math)LES Less Than Instruction (Compare)

TOD Convert To BCD (Compute/Math)AND Bitwise Logical AND (Move/Logical)EQU Equal Instruction (Compare)

Integer Files Used:N7:0 When I:1/01 is closed I:5 Input word moved

to N7:0 Integer file.N7:1 N7:0 file converted From BCD (FRD) and stored

in N7:1 integer file.N7:2 When I:3/00 is open T4:4 Accumulator Moved

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to N7:2 Integer File.N7:3 N7:2 file converted to BCD (TOD) and stored in

N7:3 integer file. Then N7:3 is moved to O:6Output Word to be displayed on BCD Display.When I:3/00 is closed T4:3 Accumulator Movedto N7:2 Integer file. N7:2 file converted toBCD and stored in N7:3 integer file. Then N7:3is moved to O:6 Output Word to be displayed tobe displayed on BCD Display.

N7:4 When I:1/02 is closed I:5 input word movedto N7:4 integer file.

N7:5 N7:4 file converted From BCD (FRD) and storedin N7:5 integer file.

N7:6 T4:5 Accumulator is ANDed (AND) with N7:5 thenstored in N7:6 integer file. N7:5 and N7:6are then used in an EQU instruction to controlthe flash rate for O:2/01.

There are actually many other ways to set up flasher circuits.Counters can be used even the ADD instuction can be used byadding one to an integer file each time the rung goes fromfalse to true. Try each of the simulation projects providedby The LearningPit and then build on that by experimenting

with other intructions to accomplish the various tasks. Alsoavailable from The LearningPit is TRiLOGI 5.02 that can helpwith learning and understanding Non-Allen Bradley PLC Programming.Just knowing there are varied methods of accomplishing a task isvery helpful in your programming. One method may help with scantimes, another may help with memory usage, and another may helpwith safety or security of the system. Knowing where your PLCprogram state is when you start-up a particular piece of equipmentmay save someone from being injured. At least when running thesesimulations if your programming logic goes HayWire you won'tdestroy expensive equipment or harm anyone. You see theseresponsibilities are very real in the field.