Emerson Rosemount OCX 8800 Reference Manual page 160

Foundation Fieldbus
Figure 7-13:
To further customize the block use for your application, you can configure filtering,
feedforward inputs, tracking inputs, setpoint and output limiting, PID equation structures,
and block output action.
units of measure, and index numbers, and
of the PID function block.
Table 7-27: PID function block system parameters
Parameter
ACK_OPTION
ALARM_HYS
ALARM_SUM
150
PID equation: Standard and Series
Table 7-27
Index number
46
47
45
lists the PID block parameters and their descriptions,
Figure 7-14 illustrates the internal components
Units
None
Percent
None
Descriptions
Uses to set auto acknowl-
edgement of alarms.
The amount the alarm value
must retrun to within the
alarm limit before the asso-
ciated active alarm condi-
tion clears.
The summary alarm is used
for all process alarms in the
block. The cause of the alert
is entered in the subcode
field. The first alert to be-
come active will set the Ac-
tive status in the Status pa-
rameter. As soon as the Un-
reported status is cleared by
the alert reporting task, an-
other block alert may be re-
ported without clearing the
Active status if the subcode
has changed.
OCX 8800