
Appendix C
Fieldbus Parameters
FieldPoint FP-3000 User Manual
C-12
©
National Instruments Corporation
LIM_NOTIFY
A limit on the number of unconfirmed alarm/event notification messages
the device can have active at once. This must be less than or equal to
MAX_NOTIFY
.
LO_ALM
The current state of the low alarm, along with a time and date stamp.
LO_LIM
The limit, in PV units, beyond which the low limit alarm is considered
active.
LO_LO_ALM
The current state of the low-low alarm, along with a time and date stamp.
LO_LO_LIM
The limit, in PV units, beyond which the low-low limit alarm is considered
active.
LO_LO_PRI
The priority of the low-low limit alarm.
Table C-8.
Linearization Types
Type
Description
Direct
The block output is directly taken from the transducer value:
Indirect
The block output is scaled according to
OUT_SCALE
from the value in
FIELD_VAL:
Indirect
Square Root
The block output is scaled according to
OUT_SCALE
from the value in
FIELD_VAL
. Before the field value is rescaled, the square root is taken.
Uninitialized
An invalid setting. The device reports a configuration error with an
Uninitalized
L_TYPE
.
OUT
transducer_value
=
OUT
FIELD_VAL(OUT_SCALE.EU100-OUT_SCALE.EU0)
(
)
=
OUT
OUT_SCALE.EU0
FIELD_VAL
100
--------------------------------
+
OUT_SCALE.EU100
OUT_SCALE.EU0
–
(
)
⋅
=