5/12/2017
TECH-538/D.W.O. 23160
Page 156 of 189
Index
Parameter
mnemonic
Description / EDD Help
Valid Range
Default
FCT
Default
Deep Default
Units Write
R/W
17
LOW_CUT
Limit used in square root processing. A value of zero percent of
scale is used in block processing if the transducer value falls
below this limit, in % of scale. This feature may be used to
eliminate noise near zero from a flow sensor.
18
PV_FTIME
Time constant of a single exponential filter for the PV, in
seconds.
19
FIELD_VAL
Raw value of the field device in % of PV range, with a status
reflecting the Transducer condition, before signal
characterization (L_TYPE) or filtering (PV_FTIME).
20
UPDATE_EVT
This alert is generated by any change to the static data.
Read
only
21
BLOCK_ALM
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 attribute.
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.
Read
only
22
ALARM_SUM
The current alert status, unacknowledged states, unreported
states, and disabled states of the alarms associated with the
function block.
23
ACK_OPTION
Selection of whether alarms associated with the function block
will be automatically acknowledged.
24
ALARM_HYS
Amount the PV must return within the alarm limits before the
alarm condition clears. Alarm hysteresis expressed as a percent
of the span of the PV.
25
HI_HI_PRI
Priority of the high high alarm.
26
HI_HI_LIM
The setting for high high alarm in engineering units.
27
HI_PRI
Priority of the high alarm.
28
HI_LIM
The setting for high alarm in engineering units.
29
LO_PRI
Priority of the low alarm.
30
LO_LIM
The setting for the low alarm in engineering units.
31
LO_LO_PRI
Priority of the low low alarm.
32
LO_LO_LIM
The setting of the low low alarm in engineering units.
33
HI_HI_ALM
The status for high high alarm and its associated time stamp.
34
HI_ALM
The status for high alarm and its associated time stamp.
35
LO_ALM
The status of the low alarm and its associated time stamp.
36
LO_LO_ALM
The status of the low low alarm and its associated time stamp.
37
XDUCER_VAL
The value and status received from the transducer block on the
selected channel.
38
XDUCER_UNITS
The value and status received from the transducer block on the
selected channel.
39
BLOCK_ERR_DESC_1 Specific details of a BLOCK_ERR.
Read
only
