Hach si792 D series, User Manual

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Operation—Foundation Fieldbus
55
6.2.3 Transducer block
The transducer block provides for acyclic data transmission. Calibration, configuration, and
maintenance commands coming from the control station are processed in the Transducer
Block. The bus parameters for the transducer block (TB) are shown in
Table 19
(default values
are in bold type).
Table 19 Transducer block bus parameters
Parameter Description R/W Bytes
Data
type
Range
ST_REV
The revision of the static data
associated with the function
block. Used by the host to
determine when to re-read the
static data.
R 2
The revision value is
incremented every
time a static
parameter in the
block is changed.
TAG-DESC
The user description of the
intended application of the
block.
R/W 32
Default: Text
STRATEGY
The strategy field can be used
to identify a grouping of blocks.
Can be used for any purpose
by the user.
R/W 2
Default: 0
ALERT_KEY
Identification number that may
be used by the host system to
sort alarms and other device
information.
R/W 1
Default: 0