PROFIBUS Txheej txheem cej luam
(1) PROFIBUS yog ib qho thoob ntiaj teb, qhib, thiab tus neeg muag khoom- tus qauv tsheb npav ywj pheej. Nws yog dav siv nyob rau hauv manufacturing automation, txheej txheem kev lag luam automation, thiab automation nyob rau hauv lwm yam sectors xws li vaj tse, tsheb thauj mus los, thiab lub hwj chim.
(2) PROFIBUS muaj peb yam sib xws: PROFIBUS-DP (Decentralized Periphery), PROFIBUS-PA (Process Automation), thiab PROFIBUS-FMS (Fieldbus Message Specification).
(3) PROFIBUS-DP: Lub siab- nrawm, qis- tus nqi sib txuas lus raws tu qauv rau cov cuab yeej- theem tswj tshuab thiab faib I/O kev sib txuas lus. PROFIBUS-DP hloov cov pa 24VDC los yog 4-20mA teeb liab kis tau tus mob.
(4) PROFIBUS-PA: Tshwj xeeb yog tsim los rau cov txheej txheem automation, ua kom cov sensors thiab actuators txuas rau ntawm ib lub tsheb npav uas muaj kev nyab xeeb tshwj xeeb.
(5) PROFIBUS-FMS: Siv rau hauv khw- kev soj ntsuam hauv pem teb, nws yog ib qho token-raws li, tiag- sij hawm ntau- tswv network.
(6) PROFIBUS yog fieldbus thev naus laus zis rau khw- kev saib xyuas hauv pem teb thiab cov ntaub ntawv sib txuas lus / tswj ntawm qib ntaus ntawv hauv lub Hoobkas automation. Nws tso cai rau kev faib cov kev tswj hwm digital thiab kev sib txuas lus hauv cheeb tsam los ntawm qib ntaus ntawv mus rau khw- kev saib xyuas hauv pem teb, muab cov kev daws teeb meem zoo rau kev ua tiav kev ua haujlwm zoo hauv lub Hoobkas thiab cov cuab yeej ntse.
Cov yam ntxwv tseem ceeb ntawm PROFIBUS
PROFIBUS raws tu qauv
Tus qauv PROFIBUS raws tu qauv yog raws li ISO 7498 tus qauv thoob ntiaj teb, siv Open System Interconnection (OSI) qauv raws li nws cov qauv siv. Cov qauv no muaj xya txheej, raws li qhia hauv qab no:
(1) PROFIBUS-DP:Txhais thawj, thib ob, thiab tus neeg siv interfaces. Cov txheej peb txog xya tsis tau piav qhia. Tus neeg siv interface qhia txog daim ntawv thov ua haujlwm rau cov neeg siv, tshuab, thiab ntau yam khoom siv, thiab qhia meej txog tus cwj pwm ntawm cov khoom siv sib txawv ntawm PROFIBUS-DP.
(2) PROFIBUS-FMS:Txhais Layers 1, 2, thiab 7. Cov txheej txheem thov suav nrog Fieldbus Message Specification (FMS) thiab Lower Layer Interface (LLI). FMS suav nrog daim ntawv thov kev cai thiab muab cov neeg siv nrog lub zog, xaiv tau ntau yam kev sib txuas lus. LLI tswj xyuas kev sib txuas lus sib txawv thiab muab cov cuab yeej siv -Txheej Txheej 2 nkag mus tau yooj yim.
(3) PROFIBUS-PA:PA cov ntaub ntawv xa mus siv txuas ntxiv PROFIBUS-DP raws tu qauv. Tsis tas li ntawd, PA piav qhia txog PA cov lus cog tseg uas tswj hwm kev coj tus cwj pwm hauv cheeb tsam. Raws li IEC 1158-2 tus qauv, PA's kis tau tus mob thev naus laus zis ua kom muaj kev nyab xeeb ntawm lub cev thiab ua kom muaj hluav taws xob rau cov khoom siv hauv lub tsheb npav. PA networks tuaj yeem txuas ntxiv dua DP siv cov khoom sib txuas.
PROFIBUS Transmission Technology
PROFIBUS muaj peb hom kev sib kis cov ntaub ntawv:
RS485 kis tau tus mob rau DP thiab FMS.
IEC 1158-2 kis tau tus mob rau PA.
Fiber Optics
RS485 Transmission Technology rau DP/FMS
Txij li thaum DP thiab FMS cov tshuab siv tib lub tshuab sib kis thiab kev sib koom ua ke hauv tsheb npav, ob lub tshuab tuaj yeem ua haujlwm ib txhij ntawm tib lub xov tooj. RS-485 kis tau tus mob yog qhov kev siv tshuab kis tau zoo tshaj plaws rau PROFIBUS. Cov tshuab no feem ntau hu ua H2. Shielded twisted-pair tooj liab cable yog siv.
Cov yam ntxwv tseem ceeb ntawm RS-485 Transmission Technology:
Network Topology:Linear bus nrog active bus termination resistors ntawm ob qho kawg.
Kis tus nqi:9.6K ntsis / s rau 12M ntsis / s
Nruab nrab:shielded twisted -pair cable; Kev tiv thaiv yuav raug tshem tawm nyob ntawm ib puag ncig tej yam kev mob (EMC).
Number of Stations:32 chaw nres tsheb ib ntu (tsis muaj rov ua dua), mus txog 127 chaw nres tsheb (nrog cov repeaters).
Connector:9-pin D-sub connector raug pom zoo.
Cov ntsiab lus tseem ceeb ntawm kev teeb tsa rau RS-485 Cov khoom siv kis tau tus mob
(1) Txhua yam khoom siv yuav tsum txuas nrog lub npav.
(2) Txhua ntu tuaj yeem txhawb nqa txog 32 chaw nres tsheb (tus tswv lossis qhev).
(3) Txhua ntu yuav tsum muaj ib lub tsheb npav nres ntawm ob lub taub hau thiab tus Tsov tus tw kom paub tseeb tias qhov yuam kev - ua haujlwm dawb. Ob qho kev txiav tawm cov resistors yuav tsum tau muaj zog ib txwm.
(4) Thaum ib ntu tshaj 32 chaw nres tsheb, cov khoom siv rov qab yuav tsum tau siv los txuas cov ntu tsheb npav. Feem ntau, tsis pub ntau tshaj peb tus repeaters yuav tsum tau txuas nrog hauv koob.
PROFIBUS-DP thiab PROFIBUS-FMS Cable Wiring thiab Bus Termination Resistor
Txhua ntu tuaj yeem txuas mus txog 32 chaw nres tsheb (tus tswv lossis qhev).
(5) Qhov siab tshaj plaws cable ntev nyob ntawm tus nqi sib kis. Thaum siv hom A cable, tus nqi sib kis thiab qhov ntev sib haum raws li qhia hauv qab no:
