Emerson Rosemount OCX 8800 Reference Manual page 184

Foundation Fieldbus
Table 7-30: Arithmetic (ARTHM) block
Index number Parameter
14 IN
16 IN_1
17 IN_2
18 IN_3
15 IN_LO
13 INPUT_OPTS
5 MODE_BLK
8 OUT
33 OUT_HI_LIM
34 OUT_LO_LIM
11 OUT_RANGE
9 PRE_OUT
7 PV
10 PV_SCALE
19 RANGE_HI
20 RANGE_LO
3 STRATEGY
174
(continued)
Units Description
Determined by The analog input value and status. The number of inputs is
source or EU of an extensible parameter in some function blocks.
PV_SCALE
Determined by The first analog input value and status.
supplying block or
source.
Determined by The second analog input value and status.
supplying block or
source.
Determined by The third analog input value and status.
supplying block or
source.
None The value used for the input whenever IN is below range.
None Sets the options for using IN, IN_LO, IN_1, IN_2, and IN_3
when any are either Bad or Uncertain.
None The mode record of the block. MODE contains the actual,
target, permitted, and normal modes. In some function
blocks, this parameter is used to request and show the
source of the setpoint, the source of the output, and/or
the block operating state.
EU of OUT_SCALE The analog output value and status. The number of out-
or Percent or EU puts is an extensible parameter in some blocks.
of IN
EU of OUT_SCALE The maximum output value allowed.
supplied by IN
EU of OUT_ The minimum output value allowed.
RANGE or Sup-
plied by IN
None Range of the output.
EU of OUT The pre-trip limit from SP or zero.
EU of OUT of EU The process variable used in block execution and alarm
of PV_SCALE limit detection.
None The high and low scale values, engineering units code, and
number of digits to the right of the decimal point associ-
ated with OUT.
None The high limit for IN.
None The low limit for IN. If IN is less than RANGE_LO, then IN_
LO is used.
None The Strategy field can be used to identify grouping of
blocks. This data is not checked or processed by the block.
OCX 8800