Rockwell-automation 1336T Function Block Prog. Manual, Series A/B Manuale Utente Pagina 117

  • Scaricare
  • Aggiungi ai miei manuali
  • Stampa
  • Pagina
    / 180
  • Indice
  • SEGNALIBRI
  • Valutato. / 5. Basato su recensioni clienti
Vedere la pagina 116
Chapter 5
5–1
1336 FORCE — 5.9 August 1995
Block Transfer Services
In this chapter, you will read about:
Block transfer descriptions
Block transfer status word
Individual block transfer services descriptions
This chapter contains the message descriptions that you need to set
up data files for the block transfer services using an Allen-Bradley
PLC or SLC-500 (using a 1747 SN adapter with an SLC 503 or 504).
Each block transfer message contains a three word command header
and a data buffer:
Header Word 1
Header Word 2
Header Word 3
Data Word 4
The first three words of a message make up the message header, and
are common to all RIO messages with the 1336T PLC
Communications Adapter Board.
Header word 1 is zero.
Header words 2 and 3 specify which operation you want to perform.
Header and data values vary depending on the operation you are
performing. Also included is a description of the status word that is
returned from the drive and appears in the Block Transfer Read
Header.
Note: The sawtooth generator application presented in Chapter 1 is
an example of using the block transfer services.
Chapter Objectives
Block Transfer
Descriptions
Vedere la pagina 116
1 2 ... 112 113 114 115 116 117 118 119 120 121 122 ... 179 180

Commenti su questo manuale

Nessun commento