26
48-640 E3 Modulevel
®
Displacer Level Transmitter - FOUNDATION fieldbus
™
HI_HI_PRI: Priority of the high high alarm.
HI_HI_LIM: The setting for high high alarm in
engineering units.
HI_PRI: Priority of the high alarm.
HI_LIM: The setting for high alarm in engineering units
LO_PRI: Priority of the low alarm.
LO_LIM: The setting for low alarm in engineering units.
LO_LO_PRI: Priority of the low low alarm.
LO_LO_LIM: The setting for low low alarm in engineering
units.
HI_HI_ALM: The status for high high alarm and its
associated time stamp.
HI_ALM: The status for high alarm and its associated
time stamp.
LO_ALM: The status for low alarm and its associated
time stamp.
LO_LO_ALM: The status for low low alarm and its
associated time stamp.
The TRANSDUCER and AI blocks’ MODE_BLK parame-
ter must be set to AUTO to pass the PV Value through the
AI to the network.
Transducer scaling, called XD_SCALE, is applied to the
PV from the CHANNEL to produce the FIELD_VAL in
percent. Valid XD_SCALE in engineering units is limited
to the four allowable codes of meters (m), centimeters (cm),
feet (ft) and inches (in) for units configured for level or inter-
face level measurement. Units configured for density meas-
urement have the engineering unit of specific gravity (sgu).
The AI can have a BLOCK_ERR when:
1. Channel is not set correctly.
2. XD_SCALE does not have suitable engineering units or has
range incompatibility.
3. SIMULATE parameter is active
4. AI block MODE is O/S (out of service).
NOTE: This can be caused by the Resource Block being OOS or the AI
Block not scheduled for execution.
5. L-TYPE not set or set to Direct with improper
OUT_SCALE.
The AI uses the STATUS_OPTS setting and the TRANS-
DUCER PV LIMIT value to modify the AI PV and OUT
QUALITY.
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