YOKOGAWA ADMAG TI Series - A3.4.2; Status Handling

<Appendix 3. Arithmetic (Ar) Block>
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IM 01E21A02-03EN
A3.4.2 Status Handling
The setting of INPUT_OPTS is applied to the input status. When INPUT_OPTS is applied, there
arecaseswherethePVstatusbecomes“good”evenifthestatusofmaininputsis“uncertain”,or
thestatusofauxiliaryinputsis“uncertain”or“bad”.
ThePVstatusisclassiedbythefollowing:
• Ifthestatusesoftwomaininputsareboth“good”,
 Orifbothstatusesoftwomaininputsareotherthan“good”
See A3.2.1 Main Inputs.
• Ifonlyoneofthestatusesoftwomaininputsis“good”
 -IfthestatusofINis“good”andthestatusof“IN_LO”isanythingotherthan“good”
  IN>RANGE_LO=>ThestatusofINapplies.
  IN≤RANGE_LO=>SeeA3.2.1MainInputs.
 -IfthestatusofINisanythingotherthan“good”andthestatusof“IN_LO”is“good”
  IN_LO<RANGE_HI=>ThestatusofIN_LOapplies
  IN_LO≥RANGE_HI=>SeeA3.2.1MainInputs.
The exception is that if RANGE_LO > RANGE_HI, the PV status is made “Bad.
CongurationError”.
The input status irrelevant to the computing equation selected by ARITH_TYPE will be ignored
anddoesnota󰀨ectotherstatuses.Thestatusesofoutputs(OUT.StatusandPRE_OUT.Status)
are interpreted as the status of the worst input among the statuses of PV and auxiliary inputs
(IN_1,IN_2,andIN_3)towhichINPUT_OPTShasbeenapplied.
Example)
Case 1 Case 2 Case 3
PV Good
IN_1 Uncertain
IN_2 Bad
IN_3 Bad
INPUT_OPTS
IN_1
Handledasa“good”
input if its status is
“uncertain”.
No option
IN_2 Handledasa“good”inputifitsstatusis“bad”. No option
IN_3 No option
ARITH_TYPE 1)Flowratecompensation(linear)inA3.3.1,“ComputingEquations”
OUT.Status Good Uncertain Bad