Siemens s7-1500 Scaling Help

Siemens Tia Portal question.

Attached is the norm x and scale x blocks.

I'm an AB guy so I'm a little confused. I programmed these networks and they work. Both are for PSI transducers. Both report to Ignition and show the correct variable but with no decimal place even though I classified them as REAL and Floats in Ignition. The final out is not a FP. I'm confused with the method of scaling despite the fact the final number is correct.
Why is the output from the Norm a 0.6 number despite the fact the EU is 16xxx?
Why am I not getting a decimal place?

Thanks...

I have no idea why there are no digits after the decimal on the SCALE_X output, but the arithmetic is straightforward:

NORM_X is the same as SCP* with SCALEDmin and SCALEmax forced to be 0 and 1: NORMalize is a word often used to described linear transformation of a value into the range 0 to 1.

SCALE_X is the reverse of NORM_X, and the same as SCP* with INPUTmin and INPUTmax forced to be 0 and 1.
* RSLogix 500

If you go to PLC tags, and see the tag, does it say REAL as data type? It could be a DWord or a Dint. You have to make sure you declare them correctly.

MD14 is not set to data type real.

%MD can mean Real (float), or either DInt or UDInt (integer).






Even if SCALE_X is calculating a floating-point result, it still has to do a conversion if the target is a DInt (integer) instead of a Real (float).

@drbitboy - where did 27564 come from?

L D[AR2 said:

@drbitboy - where did 27564 come from?

Click to expand...

d'Oh! typo-land

So I changed the data type of the scaled variable in the tag table to a REAL (it was a DINT) and although the scaled output now shows a float number with a decimal place, my tag in Ignition shows a regular number with a out a deimal point and extended an infinite amount of places.