Appendix C
Fieldbus Parameters
FieldPoint FP-3000 User Manual
C-22
©
National Instruments Corporation
UPDATE_EVT
The current state of the update event, along with a time and date stamp. This
event is issued whenever a static parameter is changed and
ST_REV
is
incremented.
WRITE_ALM
The current state of the low alarm, along with a time and date stamp.
WRITE_LOCK
The software write lock for the device. When this is set to true, writes to all
configuration parameters of all blocks are disallowed. The
WRITE_ALM
block alarm is active when writes are allowed and clear when they are
disallowed.
WRITE_PRI
The priority of the write alarm.
XD_SCALE
The scaling parameter used to interpret values from the physical I/O
channel. This is used to translate from a physical transducer value to a
percent of scale.
Table C-16.
Scaling Parameter Values
Subfield
Meaning
EU_100
Engineering units value at 100 percent of scale.
EU_0
Engineering units value at zero percent of scale.
UNIT_INDEX
Actual engineering units code (such as mA).
DECIMAL
Number of digits a host shows to the right of the
decimal for display purposes.