Advantech I/O Module 5000 Series Manuel d'utilisateur télécharger pdf (Page 52)

Chapter 4

4-29

Getting the Totalizer Value

If users want to get the actual counter value, a formula such as follows

can facilitate an easy calculation from the initial counter value, overflow

value and current counter value:

Vtol = {|Vini - Vmin (or Vmax) |+ 1} x |Vvf| + |Vini - Vcur|

Vtol : totalizer value

Vini : initial counter value

Vmin : min. couner value = 0 (fixed value)

Vmax : max. counter value = 2

= 4,294,967,295 (fixed value)

Vvf : overflow value

Vcur : current counter value

Example:

If the initial value =10, overflow value =4, min. value = 0, current

counter value = 3, the totalizer value could be calculated as

Totalizer value = {|10 - 0| + 1} x| 4 |+ |10 -3| = 51

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 71 72

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Advantech I/O Module 5000 Series Manuel d'utilisateur Page 52