ABB 功能块说明汇总.pdf

1.FunctionGenerator

1.FunctionGenerator

Thisfunctionapproximatesanonlinearoutputtoinputrelationship.Theinputrangeisdividedintofivesectionsandalinear

inputtooutputrelationshipissetupforeachofthefivesections.Thisfunctionthencomputesanoutputthatisrelatedtothe

inputaccordingtothefivelinearrelationships.

S1(1)

F(X)N

NOTES:

1.Whenfunctioncode1isutilizedasashapingalgorithmforfunctioncode222(analogin/channel),itstunablespecifications

arenotadaptable.

2.Whenfunctioncode1isusedasashapingalgorithm,itcannotatthesametimealsobeusedasalogicfunctionbecausethe

blockoutputwillnotrespondtothespecificationS1input.Functioncode1shouldnotbereferencedbyfunctionblocksotherthan

functioncode177orfunctioncode222blocksutilizingitasashapingalgorithm.

3.Multipleinstancesandcombinationsoffunctioncode177and222functionblockscanutilizethesamefunctioncode1func-

tionblockasashapingalgorithm.Thefunctioncode1shapingalgorithmfunctionblockisnotrequiredtobeinthesamesegment

asthefunctioncode177orfunctioncode222blocks.

Outputs

BlkTypeDescription

NROutputvalueoffunction

Specifications

SpecTuneDefaultTypeRangeDescription

S1N5INote1Blockaddressofinput

S2Y9.2E18RFullInputcoordinate

S3Y0.000RFullOutputcoordinateforS2