Endress+Hauser iTEMP TMT 165 FOUNDATION Fieldbus Betriebsanleitung Seite 139

FOUNDATION Fieldbus temperature transmitter
2
Endress+Hauser
The parameter BLOCK_ALM (see page 144) is used to show the block process
alarms and communicate them to the fieldbus host system. The following block
process alarm can be generated by the PID Function Block:
– OUT OF SERVICE
If the option of the process alarm (BLOCK ALM) has not been enabled in the
parameter ACK_OPTION (see page 140), the process alarms can only be
acknowledged in the parameter BLOCK_ALM (see page 144).
• Limit value process alarms
If a limit value is violated then the priority specified for the limit value alarm will be
checked before the limit value violation is communicated to the fieldbus host system.
The priority that specifies the action in the event of an active limit value violation is
determined by the following parameters:
– HI_HI_PRI (see page 148)
– LO_LO_PRI (see page 149)
– DV_HI_PRI (see page 145)
The status of the limit value process alarms is communicated to the fieldbus host system
via the following parameters:
– HI_HI_ALM (see page 148)
– LO_LO_ALM (see page 149)
– DV_HI_ALM (see page 145)
If the option of a limit value process alarm has not been enabled in the parameter
ACK_OPTION (see page 140) then this must be acknowledged directly in its
parameter (see list).
Note:
The parameter ALARM_SUM (see page 142) shows the current status of all the
process alarms.
– HI_PRI (see page 147)
– LO_PRI (see page 149)
– DV_LO_PRI (see page 146)
– HI_ALM (see page 147)
– LO_ALM (see page 149)
– DV_LO_ALM (see page 146)
11 Appendix
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