Fieldserver Dart FS-8700-78 Manuel d'utilisateur télécharger pdf (Page 11)

Driver Manual

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Page 9

DA_Field Only required when the

function is a write (wrbc) or

when the map descriptor is

associated with a write by

means of the DA_Assoc

parameter value.

This is the name of the data

field whose value you wish to

set in the device.

Other uses of this parameter are

permitted. These uses are

discussed in the Advanced

Topics section of this manual.

See Table 4.4.3.3 for a list of

permitted values.

DA_Assoc Use to associate passive map

descriptors with an active map

descriptor.

Using this parameter you

associate multiple fields with

one wrbc map descriptor, thus

reducing writing multiple

values to one device using just

one message.

Any positive integer.

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Fieldserver Dart FS-8700-78 Manuel d'utilisateur Page 11