Beta 1742A Manual do Utilizador Página 472

  • Descarregar
  • Adicionar aos meus manuais
  • Imprimir
  • Página
    / 520
  • Índice
  • MARCADORES
  • Avaliado. / 5. Com base em avaliações de clientes
Vista de página 471
DSM314 COMM REQ
GFK-1742A Appendix B DSM314 Communications Request Instructions B-17
B
DSM Parameter Load COMM REQ Example
This example is used as the basis for the following section, Section 5: COMM REQ Ladder Logic
Example. In this example, the following specifications are given:
The DSM module is mounted in Rack 0, Slot 7 of the PLC.
The Command Blocks starting address is %R0196.
The Status Word is located at %R0195.
16 parameters are to be sent.
The COMM REQs FT (fault) output drives a Set Coil.
DSM Parameter 1 is considered critical in this example application. The last two rungs of the
COMM REQ Ladder Logic Example (see Section 5) verify that Parameter 1 received the
correct value via the COMM REQ.
The data in 32 words (16 double words) of PLC memory, %R0208 through %R0239, are
copied to 16 double word parameter registers, P001 through P016, in DSM314 parameter
memory. This transfer of data is illustrated in the next figure:
PLC CPU
R
egister Memory
DSM314 Parameter
Memory
%R0000
%R0208
%R0239
P
001
P
016
32 Words
(16 Double
words)
(16 Double
Words)
P
255
Figure B-6. Data Transfer for Parameter Load COMM REQ Example
D
ATA
Vista de página 471
1 2 ... 467 468 469 470 471 472 473 474 475 476 477 ... 519 520

Comentários a estes Manuais

Sem comentários