<Appendix 3. Arithmetic (Ar) Block>
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IM 01E21A02-03EN
A3.2.4 Relationship between the Main Inputs and PV
The value and PV status are determined with the statuses of two main inputs, INPUT_OPTS,
and RANGE_LO and RANGE_HI.
• If the statuses of two main inputs are both “good”,
or both statuses of two main inputs are other than “good”,
See A3.2.1 Main Inputs.
• If only one of the main inputs has “good” status after application of INPUT_OPTS,
the PV value is determined as follows:
− If the status of IN is “good” and the status of “IN_LO” is anything other than “good”,
IN > RANGE_LO => PV = IN
IN ≤ RANGE_LO => See A3.2.1.
− When the status of IN is other than Good and the status of IN_LO is Good,
IN_LO < RANGE_HI => PV = IN_LO
IN_LO ≥ RANGE_HI => See A3.2.1.
RANGE_LO
RANGE_HI
PV = IN_LO
PV = IN
PV = g
3
IN + (1-g)
3
IN_LO
PV = g
3
IN + (1-g)
3
IN_LO
IN
IN_LO
FA0303.EPS
If the status of IN is “good” and that of “IN_LO” is
anything other than “good”
If the status of IN is anything other than “good”
and that of “IN_LO” is “good”
