Scaling

[LeeBowers1]

I would like to replicate 2 functions I use within SIemens TIA Portal regarding scaling

Normalise and Scale

I have an analog input, 0 to10V giving me 0 to 32767 - I would like this to give me a range of -20 to +80

Can anyone please suggest a way, Thank you

[GerdW]

Hi Lee,

---

@LeeBowers1 wrote:

I would like to replicate 2 functions I use within SIemens TIA Portal regarding scaling

Normalise and Scale

I have an analog input, 0 to10V giving me 0 to 32767 - I would like this to give me a range of -20 to +80

---

Generic math with function of 1st order:

y := a*x + b

You just need to determine the correct values for a & b to scale your input x (0…32767) to the desired output y (-20…+80)!

Hint:

b = -20
a = (y range) / (x range) = (80 - -20) / (32767 - 0) = 100 / 32767

How do you transfer the PLC raw data into your LabVIEW VI?

Do you even use a PLC or do you use a (NI) DAQ device?

With DAQmx you can even apply scaling (by ranges) to your AI channels, there's no need to determine a&b in this case!

[LeeBowers1]

Hello GerdW

Thank you for your email.

Your reply makes sense to me and it did seem more like a maths question rather than LabVIEW.

I did in in the interim ask chatGPT and it came back with a similar response as yourself.

Thank you

Lee

[NIquist]

---

@LeeBowers1 wrote:

Hello GerdW

I did in in the interim ask chatGPT and it came back with a similar response as yourself.

Thank you

Lee

---

I knew it! GerdW is AI. That explains a lot.  🤔

[paul_a_cardinale]

---

@NIquist wrote:

---

@LeeBowers1 wrote:

Hello GerdW

I did in in the interim ask chatGPT and it came back with a similar response as yourself.

Thank you

Lee

---

I knew it! GerdW is AI. That explains a lot.  🤔

---

That's quite an insult.  "AI" is misnamed; it should be called 'Artificial Stupidity'.

[NIquist]

I actually agree.  Sorry GerdW!

I can accept the "Artificial" part, but "Intelligence" is a way off yet.  I will start to worry when I hear about systems that learn, adapt and modify over time and can't be turned off without "dying".  Something like that could potentially achieve a self-awareness that might be considered intelligence.

Of course, then it will be too late.

[paul_a_cardinale]

---

@NIquist wrote:

I actually agree.  Sorry GerdW!

I can accept the "Artificial" part, but "Intelligence" is a way off yet.  I will start to worry when I hear about systems that learn, adapt and modify over time and can't be turned off without "dying".  Something like that could potentially achieve a self-awareness that might be considered intelligence.

Of course, then it will be too late.

---

Looking at various species of living things, we can get assessments of their approximate intelligence, and also their approximate emotional range.  The two go hand in hand: High intelligence correlates strongly with a wide emotional range.

If we ever develop a truly intelligent machine, it will likely be emotional (and possibly have psych issues).