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