IM 01E20F02-01E
A-17
APPENDIX 3. ARITHMETIC (AR) BLOCK
APPENDIX 3. ARITHMETIC (AR) BLOCK
The Arithmetic (AR) block switches two main inputs
of different measurement ranges seamlessly and
combines the result with three auxiliary inputs through
the selected compensation function (10 types) to
calculate the output.
A3.1 Schematic Diagram of Arithmetic Block
The diagram below shows the Arithmetic block schematic.
FA0301.EPS
Figure A3.1 AR Block
The Arithmetic block is divided into three sections:
· Input section: Makes a go/no-go decision on
the use of an input value, switches the range, and
determines the PV status.
· Computation section: Makes calculations
through ARITH_TYPE.
· Output section: Applies gain multiplication and
bias addition to the calculated result to perform
limitation processing for output.
* The range extension function compensates the IN and
IN_LO input values when two devices with different
ranges are connected, to make smooth input switch-
ing.
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