Transducer Block - Emerson Bettis Q Series Reference Manual

Reference manual F
DOC.RM.BQC54.E Rev: 1
February, 2016
4.2

Transducer block

The Transducer Block manages data that moves
between a function block and the device input/out-
put (I/O) such as sensors and position switches that
provide process data for automated process control.
Transducer blocks control access to I/O devices
through a device independent interface and manufac-
turer specific parameters defined for use by function
blocks. Transducer blocks also perform functions,
such as calibration and linearization, on I/O data to
convert it to a device independent representation.
The transducer block to function blocks interface is
defined as one or more implementation independent
channels.
The parameters for configuring the Transducer Block
are referenced by group within the following sections.
- For complete details of the parameters listed, see
table 4.1.
- Refer to the applicable host documentation for
procedures to access the referenced parameters.
4.2.1 General Transducer Block parameters ac-
cording FOUNDATION Fieldbus
4.2.2 Device position status parameters
4.2.3 Device configuration (Switch points and Shut-
down).
4.2.4 Diagnostic configuration (Timers, Counters).
4.2.1 General Transducer Block
parameters according F
Fieldbus Protocol
™
The Transducer Blocks parameters with index
number 1 to 24, are setup according the F
Fieldbus™ protocol. For their default setting and
adjustable range, see table 4.2.
4.2.2 Device position status parameters
There are 3 parameter which give information on the
position status of the device.
Index No Name
25 DISCRETE_POSITION
26 OPEN_STATE
27 CLOSE_STATE
For their default setting and adjustable range, see
table 4.2.
Fieldbus Control module
OUNDATION
Protocol
™
oundation
oundation
4.2.3 Device configuration.
The following five parameter are available to config-
ure the QC54 module for normal operation:
Index No Name
28 AUTO_INITIALIZATION
29 CFG_SWITCH_POINTS
32 SHUTDOWN-CFG
33 ZERO_PWR_COND
34 BUTTONBOARD_ENABLE
4.2.3.1 AUTO_INITIALIZATION
Initialization sets the end positions for the position
feedback of the actuator. The initialization procedures
are described in detail in chapter 3. For the default
setting and adjustable range, see table 4.2. index 28.
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