Emerson Rosemount 8732 Oxygen Equipment User Manual


 
Reference Manual
00809-0100-4665, Rev AA
August 2010
Rosemount 8732
3-6
Profibus PA specific
Parameters
26 TOTAL The Function Block parameter TOTAL contains
the integrated quantity of the rate parameter
provided by CHANNEL and the associated
status.
27 UNIT_TOT Unit of the totalized quantity.
28 CHANNEL Reference to the active Transducer Block,
which provides the measurement value to the
Function Block.
29 SET_TOT The following selections of this Function Block
parameter are possible:
0: TOTALIZE; “normal“ operation of the Totalizer
1: RESET; assign value “0“ to Totalizer
2: PRESET; assign value of PRESET_TOT to
Totalizer
30 MODE_TOT 0: BALANCED; true arithmetic integration of the
incoming rate values.
1: POS_ONLY; totalization of positive incoming
rate values only.
2: NEG_ONLY; totalization of negative incoming
rate values only.
3: HOLD; totalization stopped
31 FAIL_TOT 0: RUN; totalization is continued using the input
values despite the BAD status.
The status is ignored.
1: HOLD; totalization is stopped during
occurrence of BAD status of incoming
values.
2: MEMORY; totalization is continued based on
the last incoming value
with GOOD status before the first occurrence of
BAD status.
32 PRESET_TOT This value is used as a preset for the internal
value of the FB algorithm. The value is effective
if using the SET_TOT function.
33 ALARM_HYS Within the scope of the PROFIBUS-PA
specification for transmitters there are
functions for the monitoring of limit violation
(off-limit conditions) of adjustable limits.
Maybe the value of one process variable is just
the same as the value of a limit and the variable
fluctuates around the limit it will occur a lot of
limit violations. That triggers a lot of messages;
so it must be possible to trigger messages only
after crossing an adjustable hysteresis. The
sensitivity of triggering of the alarm messages is
adjustable. The value of the hysteresis is fixed
in ALARM_HYS and is the same for the
parameters HI_HI_LIM, HI_LIM, LO_LIM and
LO_LO_LIM. The hysteresis is expressed as
value below high limit and above low limit in the
engineering unit of xx_LIM.
34 HI_HI_LIM Value for upper limit of alarms
35 HI_LIM Value for upper limit of warnings
36 LO_LIM Value for lower limit of warnings
37 LO_LO_LIM Value for the lower limit of alarms
38 - 51 RESERVED BY PNO
52 VIEW_1_TOT