Hello all

I have maybe litle stupid question. 

In attachament photo is formula to count speed from hight counter. I understand all of thaet but not know how value have red number ? 

Which time units are being used?
- unit for Period
- unit for Elapsed Time

This is data from CTRL_HSC_EXT, I need only red number ?

its 1 000 000 000 in dec ??

@Kal.A:
Which question are you answering? The 1st or the 2nd?


@Marek cz:
1.0E+9  represents a constant number of  REAL#1.0E+9. The notation you show used is strange, one would expect  1.0E+9  or  10⁹   not a combination.

Perhaps elapsedTime is in seconds and Period is in nanoseconds?

It is recommended to convert the DINT numbers from the HSC to REAL before doing this calculation. numPulsePerRot will be x4 that of the encoder specification if two phase quadrature counting is configured for the HSC.

Hi #dp,

I took the first line to be a statement not a question. I think he was stressing that he wanted to understand what the notation inside his red square meant.

The answer is to the second question and by looking at the actual example and the tag declaration it becomes clearer.