text to morse code

MarcusSkynet · May 30, 2018

Hi all, may I ask anybody for help to write a program which translates text to morse code. I understand I have to divide text string to individual leters, those then translate and put back together. However I just starting with step 7 and I have no idea which functions use and most likely even how they works.
Thanks for all help.

SW: TIA v4 sp1, Win 8.1

chopin · May 30, 2018

You probably need to write a function that will translate ASCII characters into Morse code first.
How you do it it is up to you as there is many possible ways.
Easiest way could be to use outputs energized on time delay.
For exmaple 'A' is 'dot' 'dash' so you will energize output for 250ms pause and again for 750ms.

Try with one character first and then add more and more to your function.

Later you will probably need some sort of loop that will go through all characters in your string.

CommissioningMan · May 30, 2018

What have you tried so far?

Also, what kind of application is this for?

JesperMP · May 30, 2018

Create a look-up table with all the ASCII characters as bits of morse code. The "long" morse strokes are just 3 on bits.
Setup a big FIFO buffer with max no of bits that can fit the largest text that is foreseeably needed.
Read each character from the input-text, and add the characters as bits from the look-up table into the FIFO buffer. Between each character add 3 of off bits for the pause.
Then cyclically (every 0.5 sec ?) read one bit at a time from the FIFO buffer and send these to the output of choice.

edited. 3 in stead of 2 on bits for "long stroke".

MarcusSkynet · May 30, 2018

It is not an actual application, it is just to prove my skills for company where I am looking for a job.
Unfortunately I have tried nothing so far. I am learning how to use TIA for about 3 weeks so I am quite lost how to even start. Right now I am checking functions how they work and how to use them.

JesperMP · May 30, 2018

If that is the case, shame to whomever wants to prove how clever they are by providing a finished solution for you.

geniusintraining · May 30, 2018

Below may help....

https://support.industry.siemens.co...ia-portal)-and-s7-1200-s7-1500?dti=0&lc=en-US

Click on the LGF documentation link and it will download the library

MarcusSkynet · May 30, 2018

What is wrong when I want to show I am able to find solution even when I do not have needed knowledge in my head?

cardosocea · May 30, 2018

Have you looked into how Morse Code works in terms of timings, etc?
Have you noticed anything particularly constant in the Morse Code?
Does that constant timing value ring a bell when it comes to PLC controls?
Have you worked or seen any example of a bounded or circular buffer where you have a pointer to write and a pointer to read?

Lastly, if you are willing to have someone give you the information, why not search for it yourself? A simple Google search brought a few interesting results... two of which in this forum and not even that long ago.

Mind you that plenty of people use these forums...

MarcusSkynet · May 30, 2018

cardosocea said:
Have you looked into how Morse Code works in terms of timings, etc?
Have you noticed anything particularly constant in the Morse Code?
Does that constant timing value ring a bell when it comes to PLC controls?
Have you worked or seen any example of a bounded or circular buffer where you have a pointer to write and a pointer to read?

Lastly, if you are willing to have someone give you the information, why not search for it yourself? A simple Google search brought a few interesting results... two of which in this forum and not even that long ago.

Mind you that plenty of people use these forums...

Google search was my first option. However my google searches brought me nothing what I could use. That is why I am asking here (and on another places as well). I have worked with RSLogix before, but I have to compose it for siemens.

To your questions, all yes except buffer.

janner_10 · May 30, 2018

No offence intended, but are you at the level required for the job?

MarcusSkynet said:
Unfortunately I have tried nothing so far.

That won't cut the mustard, when given your first project.

MarcusSkynet · May 30, 2018

janner_10 said:
No offence intended, but are you at the level required for the job?

That won't cut the mustard, when given your first project.

I got it now. My bad. I thought it is about this particular task. Anyway, they know I am new in siemens, I have worked with allen bradley before. I already did another programs for them and this is my last one.

chopin · May 30, 2018

If you worked with RSLogix then ladder logic in TIA is very similar. Basic instructions like mov, add, ton works the same so you should be able to figure out something simple relatively easy.

Once you will start you can improve your program by adding more complex structure.

janner_10 · May 30, 2018

MarcusSkynet said:
I got it now. My bad. I thought it is about this particular task. Anyway, they know I am new in siemens, I have worked with allen bradley before. I already did another programs for them and this is my last one.

Best of luck with the new job then.

MarcusSkynet · May 30, 2018

chopin said:
If you worked with RSLogix then ladder logic in TIA is very similar. Basic instructions like mov, add, ton works the same so you should be able to figure out something simple relatively easy.

Once you will start you can improve your program by adding more complex structure.

exactly, but as hard as I am trying, I cant find anything simple to solve this task

text to morse code

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