Owner's manual

FOUNDATION
TM
Fieldbus Blocks Manual
2-4
Simulation To support testing, you can either change the mode of the block to
manual and adjust the output value, or you can enable simulation
through the configuration tool and manually enter a value for the
measurement value and its status. In both cases, you must first set the
ENABLE jumper on the field device.
NOTE
All fieldbus instruments have a simulation jumper. As a safety
measure, the jumper has to be reset every time there is a power
interruption. This measure is to prevent devices that went through
simulation in the staging process from being installed with simulation
enabled.
With simulation enabled, the actual measurement value has no impact
on the OUT value or the status.
SIMULATE 09 None A group of data that contains the
current transducer value and
status, the simulated transducer
value and status, and the
enable/disable bit.
STRATEGY 03 None The strategy field can be used to
identify grouping of blocks. This
data is not checked or processed
by the block.
ST_REV 01 None The revision level of the static
data associated with the function
block. The revision value will be
incremented each time a static
parameter value in the block is
changed.
TAG_DESC 02 None The user description of the
intended application of the block.
UPDATE_EVT 20 None This alert is generated by any
change to the static data.
VAR_INDEX 39 % of OUT Range The average absolute error
between the PV and its previous
mean value over that evaluation
time defined by VAR_SCAN.
VAR_SCAN 40 Seconds The time over which the
VAR_INDEX is evaluated.
XD_SCALE 10 None The high and low scale values,
engineering units code, and
number of digits to the right of the
decimal point associated with the
channel input value.
The XD_SCALE units code must
match the units code of the
measurement channel in the
transducer block. If the units do
not match, the block will not
transition to MAN or AUTO
TABLE 2-1. Definitions of Analog Input Function Block System Parameters
Parameter
Index
Number
Units Description