Black Box IC108A Guia do Utilizador descarregar pdf (Página 53)

Advant

Smart Device (HART

) Interface User’s Guide

Section 2.4.3 Techniques of Mapping Smart Device Variables to Advant OCS

3BUR 001 085R0001 REV A 2-41

acknowledgment, it can overwrite the data image table it maintains with fresh data. This

technique is especially useful for reading digital data rapidly.

Writing to Coils or Registers

There are four methods to write to coils and registers:

• ROC, Read Output Coil

• ROR, Read Output Register

• DFOA-C, Define Output Only Area - Coil

• DFOA-R, Define Output Only Area - Register

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Black Box IC108A Guia do Utilizador Página 53