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Manual
00809-0500-4880
Table 8-25: PID Function Block System Parameters
Parameter
ALARM_SUM
ALERT_KEY
ALG_TYPE
BAL_TIME
BIAS
BKCAL_HYS
BKCAL_IN
Rosemount OCX8800A
Index number
45
04
74
25
66
30
27
(continued)
Units
None
None
None
Seconds
EU of OUT_SCALE
Percent
EU of OUT_SCALE
F
Fieldbus
™
OUNDATION
December 2022
Descriptions
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
become active will set the
Active status in the Status
parameter. As soon as
the Unreported status is
cleared by the alert
reporting task, another
block alert may be
reported without clearing
the Active status if the
subcode has changed.
The identification number
of the plant unit. This
information may be used
in the host for sorting
alarms, etc.
Selects filtering algorithm
as backward or bilinear.
The specified time for the
internal working value of
bias to return to the
operator set bias. Also
used to specify the time
constant at which the
integral term will move
back to obtain balance
when the output is
limited and the mode is
AUTO, CAS, or RCAS.
The bias value used to
calculate output for a PD
type controller.
The amount the output
value must change away
from its output limit
before the limit status is
turned off.
The analog input value
and status from another
block's BKCAL_OUT
output that is used for
backward output tracking
for bumpless transfer and
to pass limit status.
169
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