KROHNE H250 M40 FOUNDATION FIELDBUS - Manual (Page 49)

OPERATION
4
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H250 M40
www.krohne.com 02/2014 - 4001208201 - AD H250 M40 FF R02 en
DECIMAL
Decimal
RW The number of digits to the right of the decimal point which
should be used by an interface device in displaying the specified
parameter.
0
PV PV PV PV
Process Value
Either the primary analog value for use in executing the function,
or a process value associated with it. May also be calculated from
the RBACK value of an AO block.
STATUS
Status
R Digital transducers, unlike their analog versions, can detect faults
that make the measurement bad or prevent the actuator from
responding. This additional, valuable information will be passed
along with each transmission of a data value in the form of a
status attribute.
0
VALUE
Value
R A numerical quantity entered by a user or calculated by the
algorithm.
0.0
PV_FTIME PV_FTIME PV_FTIME PV_FTIME
Process Value
Filter Time
RW Time constant of a single exponential filter for the PV, in seconds. 0.0
Setting:
0.0...60.0
SIMULATE SIMULATE SIMULATE SIMULATE
Simulate
Allows the transducer analog input or output to the block to be
manually supplied when simulate is enabled. When simulate is
disabled, the simulate value and status track the actual value and
status.
SIMULATE_STATU
S
Simulate Status
RW Used for the transducer status when simulation is enabled. 0
SIMULATE_VALUE
Simulate Value
RW Used for the transducer value when simulation is enabled. 0.0
Setting:
-3.39E38…+3.39E38 / -INF (-infinite) / + INF (+infinite)
TRANSDUCER_VA
LUE
Transducer Value
R Current value supplied by the transducer. 0.0
ENABLE_DISABLE
Simulate
En/Disable
RW Enable/disable simulation. Disabled
Setting:
• Uninitialized
• Disabled
• Active
STATUS_OPTS STATUS_OPTS STATUS_OPTS STATUS_OPTS
Status Options
RW Options which the user may select in the block processing of
status.
Uninitialized
Setting:
• Propagate Fault Fwd
• Uncertain if Limited
• Bad if Limited
• Uncertain if Man.
UPDATE_EVT UPDATE_EVT UPDATE_EVT UPDATE_EVT
Update Event
This alert is generated by any change to the static data.
UNACKNOWLEDG
ED
Unacknowledged
RW A discrete enumeration which is set to Unacknowledged when an
update occurs, and set to Acknowledged by a write from a human
interface device or other entity which can acknowledge that the
alarm has been noticed.
Uninitialized
Setting:
• Uninitialized
• Acknowledged
• Unacknowledged
Analog Input Block
Parameter
DD Name Access Description
settings Initial
AD_H250_M40_FF_R02_en_4001208201_PRT.book Page 49 Friday, February 21, 2014 11:25 AM