Siemens SIMATIC NET Spécifications Page 189

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 268
  • Table des matières
  • DEPANNAGE
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 188
Chapter 10. Configuring the I/O Driver from FIX/iFIX Applications179
See Also
Specifying Signal Conditioning in Database Manager
13BN Signal Conditioning
Signal conditioning defines how the process database scales incoming data.
Read
Algorithm
Variables
Lo_egu – the database block’s low
engineering value.
Span_egu – the span of the
engineering values.
BCD_value – the BCD value
converted from the raw value.
Result – the scaled value stored in
the database block.
Write
Algorithm
Writes to a 4-digit BCD register
using the following algorithm:
Result = (((InputData – Lo_egu) /
Span_egu) * 9999) + 0.5
and then converts the resulting value
back to a 4BCD value prior to
sending it to the process hardware.
Write
Algorithm
Variables
Lo_egu – the low engineering value.
Span_egu – the span of the
engineering values.
InputData – the database block’s
current value.
Result – the unscaled value.
Vue de la page 188
1 2 ... 184 185 186 187 188 189 190 191 192 193 194 ... 267 268

Commentaires sur ces manuels

Pas de commentaire