Levelflex M FMP40 FOUNDATION Fieldbus Appendix
Endress+Hauser 121
11.8.5 Output response parameters
11.8.6 Alarm parameters
11.8.7 Alarm priorities
11.8.8 Alarm status
Parameter Description
LOW_CUT Not relevant to level measurement!
Determines a threshold for square root linearization below which the output value is set
to zero.
PV_FTIME Sets the time constant for the output value.
Parameter Description
ACK_OPTION Sets the way in which alarms and warnings are to be acknowledged.
ALARM_HYS Sets the hysteresis (in output engineering units) for all configured alarms.
A hysteresis of e.g. 2 % on a HI_HI_LIMIT of 95 % would cause the alarm to activate
when the level reaches 95 % and to deactivate when the level drops below 93 %.
A hysteresis of e.g. 2 % on a LO_LO_LIMIT of 5 % would cause the alarm to activate
when the level drops below 5 % and to deactivate when the level rises to 7 %.
HI_HI_PRI The priority (1 – 15) of the HI_HI alarm
HI_HI_LIM Sets the HI_HI alarm limit in output engineering units
HI_PRI The priority (1 – 15) of the HI alarm
HI_LIM Sets the HI warning limit in output engineering units
LO_PRI The priority (1 – 15) of the LO alarm
LO_LIM Sets the LO warning limit in output engineering units
LO_LO_PRI The priority (1 – 15) of the LO_LO alarm
LO_LO_LIM Sets the LO_LO alarm limit in output engineering units
Parameter Description
0 Alarm is suppressed
1 Recognised by the system but not reported
2 Reported to the operator, but does not require his attention
3 - 7 Advisroy alarms of increasing priority
8 - 15 Critical alarms of increasing priority
Parameter Description
HI_HI_ALM The status of the HI_HI alarm
HI_ALM The status of the HI alarm
LO_ALM The status of the LO alarm
LO_LO_ALM The status of the LO_LO alarm
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