Omron ES100 - 1.1 Introduction to Serial Communications

ニ くがセニニン ニびジ ニ てニエニニらニベ コおゴ ニぱそロよニコえニニニ エ ココ るニニン ニニニコ ニニウ ニマココぜがトニリニ ニリニひジゾ エロ ゐロ ト か ロワロ コ
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1.lintroduction
■Whatis"serial"serialcommunications"▲samethodoftransmittingandreceivingthe
C・mm画catl◎nsγ=s￡鑑霊㌶1湯跳隠隠ll惣1㍑隠隠l
involvesreceivingacommandframefromthePLC,andtransmittinga
responseframeinresponsetothecommandfぬme.・
Commandframe
Commandframe
識一一…一一一＼一………一国デ…一………
1secmax.
Responseframe
lmsecmin.
ThefollowingfUnctionscanbeexecutedbyserialcommunications:
・Read/writeofvariableareas
・Read!writeofparameterareas
・Read/w亘te/deleteofsequencesettingva}ue
・Readofpatteminformation
●Operatinginstructions
eReadofcontrollerstatus
oEchobacktest
Someinformatiencannotbeexecutedinwriteoperations.
■Aboutthese『iai
finterface
Comm皿icationsconfo㎜ingtotheRS‑232C,RS‑4220rRS‑485interface
arecarriedoutdependingonthetypeofESlOO.
Communicationsiscarriedout.
eESlOOロー口口Ol口口(RS‑232Cinterface)
eESIOOE]‑1]口04⊂]〔](RS‑422/485inte㎡ace)
SelectionoftheRS‑422andRS‑485issetbyswitchsettingsontheES1⑪◎.
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