Siemens SIMATIC NET PROFIBUS Servisní příručka Strana 175

  • Stažení
  • Přidat do mých příruček
  • Tisk
  • Strana
    / 238
  • Tabulka s obsahem
  • KNIHY
  • Hodnocené. / 5. Na základě hodnocení zákazníků
Zobrazit stránku 174
Description of the DP Functions, Data, and Error Codes
DP Base Programming Interface for CP 5613/CP 5614
C79000-G8976-C108-01
175
4.5 Formats of the Slave Data
Order of the Slave Data
The order of the data corresponds to the configured input/output ports of the DP
slaves.
For example, the input ports of an ET 200B 16DI station are stored as follows: port
0 in the first byte, port 1 in the 2nd byte etc.
Format of Data Words
The following order is necessary for storing values in the word format (2-byte
numbers):
First, the high byte (lower order address) of the word is entered followed by the low
byte (higher order address), in other words in Motorola format.
Note 1
This order does not correspond to the format of processors belonging to the
80x86/Pentium family!
Note 2
Take into account any additional information from the vendor of the slaves your
user program should support.
Zobrazit stránku 174
1 2 ... 170 171 172 173 174 175 176 177 178 179 180 ... 237 238

Komentáře k této Příručce

Žádné komentáře