F
OUNDATION
Fieldbus Block Information
September 2018
Reference Manual
00809-0400-4728, Rev CA
Foundation Fieldbus Block Information
48
B.2.1 Parameters and descriptions
Table B-2. Sensor Transducer Block Parameters and Descriptions
Parameter
Index
number
Description
Notes on how changing this
parameter effects transmitter
operation
ALERT_KEY
04
The identification number of the plant unit.
No effect on operation of transmitter but
may affect the way alerts are sorted on
the host end.
BLOCK_ALM
08
The block alarm is used for all configuration,
hardware, connection failure or system
problems in the block. The cause of the alert
is entered in the subcode field. The first alert
to become active will set the Active status in
the Status parameter. As soon as the
Unreported status is cleared by the alert
reporting task, another block alert may be
reported without clearing the Active status,
if the subcode has changed.
No effect.
BLOCK_ERR
06
This parameter reflects the error status
associated with the hardware or software
components associated with a block. It is a
bit string, so that multiple errors may be
shown.
No effect.
CAL_MIN_SPAN
18
The minimum calibration span value
allowed. This minimum span information is
necessary to ensure when calibration is
done, the two calibrated points are not too
close together.
No effect.
CAL_POINT_HI
16
The highest calibrated value.
Assigns a value to the calibration high
point.
CAL_POINT_LO
17
The lowest calibrated value.
Assigns a value to the calibration low
point.
CAL_UNIT
19
The device description engineering units
code index for the calibration values.
Device must be calibrated using the
appropriate engineering units.
COLLECTION_DIRECTORY
12
A directory that specifies the number,
starting indices, and DD Item ID's of the
data collections in each transducer.
No effect.
ASIC_REJECTION
42
Indicates the type of material that the drain
vents on the flange are made of. See Drain
Vent Material Codes.
N/A
FACTORY_CAL_RECALL
32
Recalls the sensor calibration set at the
factory.
N/A
USER_2W_OFFSET
36
Indicates the type of material that the
flange is made of. See Flange Material
Codes.
N/A
INTER_DETECT_THRESH
35
Indicates the type of flange that is attached
to the device. See Flange Type Codes.
N/A
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