RS-485 (interface converter): Daim duab thiab cov hauj lwm

RS-485 - yog ib hom ntawm transducer uas yog siv nyob rau hauv industrial tes hauj lwm. Nws kuj yog siv nyob rau hauv lub differential kab. Feem ntau cov feem ntau muaj yog kev hloov kho ntawm lub USB-connector. Lub hauv paus ntsiab lus ntawm cov lag luam ntawm lub cell yog ua nyob rau hauv ib cov ntaub ntawv hloov lwm lub tsev los ntawm kev xa cov tsawg zaus pulses.

Converters txawv ntawm ib tug thawj parameter ntawm cov zis kuj. Nws yuav tsum raug borne nyob rau hauv lub siab hais tias tus qauv yog tau nrog ib tug sib txawv cov ntaub ntawv tus nqi. Nyob rau hauv thiaj li yuav to taub nyob rau hauv ntau yam nyob rau hauv lawv, koj yuav tsum xav txog modifying lub xov.

Standard kev twb kev txuas converter

Li ib txwm kev twb kev txuas inverter Circuit Court muaj xws li ib tug self-regulating resistors thiab expander. Lub thyristor yog feem ntau siv dial-up hom. Nyob rau hauv kev txiav txim kom tsis txhob overloading ntawm lub network, siv daim hlau. Nyob rau hauv tej rooj plaub, kis tau tus mob mounted electromagnetic valve raj hom. Nyob rau hauv tag nrho, cov saw hlau yuav ua tau mus tsib capacitors. Nyob rau nruab nrab, tso zis rau impedance yog tsawg tshaj li 5.5 ohms. Yog hais tias peb xav txog ib tug muaj RS-485 interface nrog galvanic rho tawm, muaj yog siv ib tug mem tes extender.

Model ntawm 100 khoom ib ob

Converter RS-232/485 interface ntawm no hom yog kev cob cog rua heev dua lwm yam ntawm lub transceiver. Nyob rau hauv cov ntaub ntawv no, lub siab tshaj plaws ntev ntawm ib ntu tsis pub tshaj 1200 nm. Nyob rau nruab nrab, tam sim no noj parameter yog sib npaug zos rau 130 ma. Yog hais tias peb xav txog lub converter Ethernet interfaces RS-485 tsis muaj expanders, ces nws siv ib tug tsis amplifier.

Ntaus tsim mus cuag ib tug tshaj plaws ntawm tsib transceivers. Nyob rau hauv cov ntaub ntawv no, lub teeb liab zog nyob rau hauv lub tam sim no ntxiv rau lub peev xwm. RS-485 interface cable muab ib tug logic-xoom theem 200 MV. Neeg cascade nyob heev dua lwm yam rau lub hom transceiver.

Devices 300 khoom ib ob

Modifications ntawm no hom yog tsim, raws li ib tug txoj cai, nyob rau hauv them nyiaj yug ntawm tsis muaj ntau tshaj li tsib transceivers. Rau ib nrab-ob lub tsev cov ntaub ntawv pauv ntaus ntawv yog zoo suited. Kev cob cog ntsiab feem ntau los ntawm ib tug tseem ceeb amplifier. Nyob rau hauv tag nrho, cov saw hlau no tsis siv rau ntau tshaj peb capacitors. Nyob rau nruab nrab slew tus nqi converters muaj tsis ntau tshaj li 1 V ib microsecond. Expanders yog tsuas yog siv mem tes hom. Yog hais tias peb xav txog qhov RS-422/485 (lub interface converter) rau cable modem, ces nws siv ib tug electromagnetic valve raj. Cuam nyob rau hauv xws circuits muaj cai ntau heev. Nws yuav tsum tau muab sau tseg tias cov logic ib theem, nyob rau nruab nrab sib npaug zos rau 150 MV.

Qauv 600 khoom ib ob

Interface converter RS-485 USB yog siv rau no hom ntawm modem cables. Qhov siab tshaj plaws ya ntev nyob rau hauv cov ntaub ntawv no yog sib npaug zos rau 1300 nm. Ntaus rau bidirectional kis tau tus mob ntawm cov ntaub ntawv haum zoo. Qhov nruab nrab rhiab heev ntawm lub cascade converters tsis pub tshaj 210 MV. Slew Rate sib npaug txog 1.2 rau microseconds.

Txuas kev hloov kho tej zaum yuav ua los ntawm ib tug tsis amplifier los yog resistor. Yog hais tias peb xav txog cov kev xaiv thawj nyob rau hauv qhov teeb meem no yuav tsis ua li cas tsis hlau thyristor. Nws tseem ceeb heev kom nco ntsoov hais tias tus capacitor yog tsuas haum phaj. Yog hais tias peb xav txog lub converter interface RS-485 USB resistors, ces nws yuav siv lub electromagnetic valve raj hom. Nyob rau hauv cov ntaub ntawv no, tso zis rau impedance ntawm lub system fluctuates nyob ib ncig ntawm 4.6 ohms.

Qauv 10 transceivers

Converters 10 transceivers muaj lub siab tso zis impedance parameter. Haum pab kiag li lawm ntawm no hom feem ntau rau bidirectional cov ntaub ntawv kis tau tus mob. Parameter tam sim no noj nyob rau nruab nrab sib npaug zos rau 230 ma. Cov ntaub ntawv tus nqi yog tsawg tshaj li 130 khoom ib ob. qauv yog zoo tagnrho rau cov automated systems.

Slew tus nqi lub teeb liab los ntawm transducer tsis pub tshaj 1.3 V ntawm ib tug microseconds. Neeg cascade hauv cov ntaub ntawv no yog tsis tseem ceeb txaus. Ncaj qha kev txuas pab kiag li lawm tshwm sim ntawm lub adjustable resistor ntaus los yog extender. Yog hais tias peb xav txog cov thawj embodiment, nyob rau hauv cov ntaub ntawv no, tsis ua li cas tsis dynamic transceiver. Kev sib txuas los ntawm cov expander yog feem ntau ho ua rau kom cov theem ntawm cov zajlus kom zero.

Scheme 13 transceivers

Converter RS-232/485 transceivers 13 kev cob cog rua ntawm lub liner. Qhov nruab nrab tam sim no noj chaw rau tus ntaus ntawv yog 120 ma. Yuav kom txo tau txoj kev pheej hmoo ntawm cuam thov trimmer. Thyristors yog feem ntau teem dial hom.

Ncaj qha Liner siv nrog ib tug amplifier. Rau ib nrab-ob lub tsev sib txuas lus, xws converters yog zoo suited. Qhov nruab nrab tso zis kuj lawv tsis pub tshaj 4.5 ohms. Neeg cascade hauv cov ntaub ntawv no yog sib npaug zos rau tsis pub ntau tshaj 170 MV.

Converters 50mA

RS-485 (interface converter) 50 ma yog tsuas haum rau cia li tshuab. Ib tug txawv feature ntawm tus qauv yog xav tau kev kub ceev cov ntaub ntawv hloov lwm lub tsev. Ncaj qha cuag cov kev hloov kho nqa tawm los ntawm galvanic rho tawm. Nyob rau hauv cov ntaub ntawv no, lub rhiab heev ntawm lub cascade yog tsis ntau tshaj 150 MV. Logic theem pes tsawg yog sib npaug zos rau 230 MV. Yog hais tias peb xav txog lub ntaus ntawv rau bidirectional kev sib txuas lus, lawv tau siv ib tug mem tes extender hom. Nyob rau hauv lem, tus transceiver yog tsim tsuas dynamic.

Converters 120 MA

RS-485 (interface converter) nyob rau hauv 120 ma yog kev cob cog rua ntawm ob lub tsev transistors. Yog hais tias peb xav txog qhov version nrog zaub system, ces lawv muaj ib tug dynamic transceiver. Rau ib nrab-ob lub tsev cov ntaub ntawv pauv ntaus ntawv yog zoo suited. Tag nrho cov muaj tus muaj peev xwm mus cuag mus txog kaum transceivers. Raws li ib tug txoj cai, ib tug logic ib theem yog tsawg tshaj li 130 MV.

Nyob rau hauv cov ntaub ntawv no, tus naj npawb ntawm cov neeg tsav tsheb nyob rau hauv lub hwj chim ntawm lub ntsiab amplifier. Extender yog siv mas lam ua hom. Qhov siab tshaj plaws ntev ntawm ib ntu yog sib npaug zos rau 1300 NS. Rau pab kiag li lawm ntawm automation tshuab haum zoo. Slew tus nqi lub teeb liab feem ntau tsis pub tshaj 1.1 V ib microsecond.

ib nrab-ob lub tsev ntaus ntawv hom

RS-485 (interface converter) muaj peev xwm ntawm ib nrab-ob lub tsev-hom transistor kev cob cog rua ntawm coding. Ua li no, lub thyristor yog siv nrog lub ntsiab amplifier. Transceiver siv ob qho tib si dynamic thiab teb yam. Lub tso zis impedance ntawm lub Circuit Court tsis pub tshaj 5.4 ohms. Cov qhov taw qhia ntawm qhov tam sim no tau ntawm ib tug nruab nrab sib npaug zos rau 130 ma. Qhia kev txais tos cov ntaub ntawv nyob rau hauv cov ntaub ntawv no yog muab standard.

cov ntaub ntawv hloov lwm lub tsev ceev tsis pub tshaj 100 khoom ib ob. Lub rhiab heev ntawm lub cascade nyob rau theem ntawm 230 MV. Nws tseem ceeb heev kom nco ntsoov tias lub transducer kev twb kev txuas yuav ua tau ntawm podstrochenny extender. Nyob rau hauv cov ntaub ntawv no, lub resistor yog tsim adjustable hom. Ncaj qha thyristor siv nrog switching amplifier. Nyob rau hauv tag nrho, nws muaj peb Circuit Court capacitor.

differential kev hloov kho

Lub differential RS-485 (interface converter) yog siv heev dua lwm yam rau cov cable modem. Hais hauv lub txais tos cov ntaub ntawv nyob rau hauv cov ntaub ntawv no yog muab. Fais fab converters los ntawm yusb chaw nres nkoj. Muaj ntau cov qauv kev pab txhawb nqa "windose 7" thiab XP. Tam sim no noj npaum li cas yog sib npaug zos rau tsis muaj ntau tshaj li 190 ma. Ib tug logic ib theem yog tsis ntau tshaj 90 MV.

Yuav kom txuas cov khoom yog siv tsis tau tsuas yog capacitors, tab sis resistors thiab teb. Logic pes tsawg theem, raws li ib tug txoj cai, tsis pub tshaj 120 MV. Cov kev ceev ntawm lub teeb liab nyob rau hauv no hom ntawm cov qauv no heev. Rate rhiab heev ntawm lub cascade converter interface RS-485 (REYE-232) yog ib theem ntawm 170 MV. Slew tus nqi yog tsawg tshaj li 1.2 V ib microsecond.

Kev twb kev txuas los ntawm ua hauj lwm zoo extender

Yog hais tias peb xav txog cov xov los ntawm cov ua hauj lwm zoo amplifier, nws yog ib qho tseem ceeb rau koj nco ntsoov tias tam sim no noj nqi yuav tsum tsis txhob ntau tshaj 200 ma. Thaum pib ntawm lub saw yog cov davhlau ya nyob box. Lub thyristor yog tsuas yog siv rau ib tug ob peb capacitors. Cia li ob electrode system yog muab. Lub transistor yog tsim tsuas code hom. Nyob rau hauv cov ntaub ntawv no, lub logic ib theem tsis pub tshaj 150 MV. Tsis amplifiers rau tej circuits yog tsis haum. Tag nrho cov kev cob cog rua rau lub inverter yog tsis ntau tshaj rau transceivers.

Ib leeg-tas converter thiab expander

RS-485 interface converter nrog ib tug single-twb expanders xav tau rau modem cables. Zaub system tau txais cov ntaub ntawv los ntawm cov qauv yog muaj nyob rau hauv diode hom. Qhov nruab nrab tam sim no noj yog tsawg tshaj li 230 ma. Haum pab kiag li lawm tsuas yog rau cov ib nrab-ob lub tsev cov ntaub ntawv pauv. cov ntaub ntawv hloov lwm lub tsev tus nqi tsis pub tshaj 120 khoom ib ob.

Nws tseem yog ib qho tseem ceeb yuav tau nco ntsoov hais tias tus qauv siv los tiv thaiv lub system los ntawm high voltage. Tam sim ntawd ntaus ntawv powered by yusb chaw nres nkoj. Rate rhiab heev ntawm lub cascade, nyob rau nruab nrab sib npaug zos rau 160 MV. Cov kev ceev ntawm lub teeb liab nyob rau hauv tus qauv yog heev siab heev. Lub transceiver nyob rau hauv hluav taws xob kev rho tawm yog feem ntau siv dynamic hom. Txojkev mas thov kom tsis amplifier. Splitter RS-485 zis impedance yog tsawg tshaj li 5.8 ohms.

Kev siv ntawm qhib resistors

Devices yog ua los nrog qhib resistors 120 thiab 200 ma. Direct kev twb kev txuas yog ua ntawm lub davhlau ya nyob twg box. Hwj chim qauv yog tsim los ntawm yusb chaw nres nkoj. Haum tsav rs 485 rau ib nrab-ob lub tsev cov ntaub ntawv sib txuas lus. Lub cev amplifiers yog heev tsawg nyob rau hauv lub tshuab ntawm no hom. Expanders yog feem ntau siv hom mem tes. Nyob rau nruab nrab, ib tug logic ib theem yog sib npaug zos rau tsis muaj ntau tshaj li 135 MV. Qhov siab tshaj plaws ntev ntawm ib ntu yog nyob ib ncig ntawm 1300 nm.

Siv cov yoj transceiver

Modifications rau nthwv dej transceivers haum rau ob qho tib si ib nrab-ob lub tsev thiab bidirectional kev sib txuas lus. Cov ntaub ntawv hloov lwm lub tsev ceev nyob rau hauv cov ntaub ntawv no yog sib npaug zos rau li 230 khoom ib ob. Tag nrho cov ntaus ntawv muaj peev xwm sawv ntawm txhawb txog kaum transceivers. Qhov nruab nrab ntev ntawm ib ntu tsis pub tshaj 1400 nm. Nyob rau hauv lem, qhov Performance index yog sib npaug zos rau cov qhov tso zis kuj 5.1 ohms. slew tus nqi nyob rau hauv cov ntaub ntawv no yog nyob ntawm seb hom amplifier.