Modbus Kadodo: Nu vevitɔ si ana woatu dɔwɔƒewo ƒe kadodo siwo me kuxi aɖeke mele o ɖo
Modbus Kadodo: Nu vevitɔ si ana woatu dɔwɔƒewo ƒe kadodo siwo me kuxi aɖeke mele o ɖo
Kpɔɖeŋu bliboa
Modbus nye ɖoɖo si wozãna zi geɖe le dɔwɔƒewo, si woto vɛ le ƒe 1979 me be wòana kadodo nate ŋu anɔ mɔ̃ siwo wɔa dɔ le wo ɖokui si dome. Wowɔ Modbus gbã abe dɔwɔwɔ ƒe ɖoɖo ƒe ɖoɖo ene hena nyatakakawo ɖoɖo ɖa to serial layer dzi, eye fifia woateŋu akekee ɖe enu hã be woawɔe to serial, TCP/IP, kple User Datagram Protocol (UDP) dzi. Nuŋlɔɖi sia na gɔmeɖeɖe deto tso ɖoɖowɔɖia ƒe dɔwɔwɔ ŋu.
Nukae nye Modbus ƒe ɖoɖowɔɖi?
Modbus nye biabia ŋuɖoɖo ƒe ɖoɖowɔɖi si wowɔ to aƒetɔ kple kluvi ƒe ƒomedodo me. Le aƒetɔ kple kluvi dome ƒomedodo me la, kadodo dzɔna le eve eve me ɣesiaɣi (ele be mɔ̃ aɖe nadze biabia gɔme eye emegbe wòalala ŋuɖoɖo), eye mɔ̃ si le biabiam (mɔ̃ gã) ƒe agbanɔamedzie wònye be wòadze kadodo ɖesiaɖe gɔme. Zi geɖe la, mɔ̃ vevitɔ nyea amegbetɔ kple mɔ̃ ƒe ƒomedodo (HMI) alo ŋkuléleɖenuŋu kple nyatakakawo xɔxɔ (SCADA) ƒe ɖoɖo, gake mɔ̃ evelia ya nyea nusiwo dea dzesi nu, susuŋudɔwɔwɔ dzikpɔnu siwo woate ŋu awɔ ɖoɖo ɖe wo ŋu (plcs), alo ɖoɖowɔɖi siwo woate ŋu awɔ le wo ɖokui si (PACs). Woɖea biabia kple ŋuɖoɖo siawo me nyawo, kpakple network layer si ɖoa gbedasi siawo ɖa la gɔme to ɖoɖowɔɖia ƒe ƒuƒoƒo vovovowo dzi.
Mɔ̃ kawoe doa alɔ Modbus ƒe ɖoɖowɔɖi?
Mɔ̃wo doa alɔ Modbus ƒe ɖoɖowɔɖia ŋutɔ, siwo dometɔ aɖewoe nye programmable logic controllers (PLCs), remote terminal units (RTUs), sensors, actuators, human-machine interfaces (HMIs), kple mɔ̃ ƒomevi bubu geɖe siwo le dɔwɔƒewo ƒe nuwo wɔwɔ le wo ɖokui si kple dɔwɔƒewo ƒe akpawo. Dɔwɔƒe si Kpɔa Dɔwɔwɔwo Dzi. Wozãa Modbus le afisiafi eye wòva zu dzidzenu ŋutɔŋutɔ si dzi woato awɔ dɔ aduadu le mɔ̃ siwo dɔwɔƒe vovovowo wɔ le dɔwo abe nuwo wɔwɔ, ŋusẽ, ʋuɖoɖo, kple xɔtuɖaŋuwo ƒe nuwo wɔwɔ le wo ɖokui si ene dome.
Modbus gateway nye mɔ̃ si trɔa kadodomɔnu si dɔwɔƒewo ƒe automation system network hubs zãna. Eɖoa dze kple smart devices, ƒoa nyatakakawo nu ƒu tso mɔ̃ siwo le ɖoƒe si le anyime gbɔ eye wòɖoa wo ɖe Modbus ƒe agbo nu, eɖoa kadodo kple kɔmpiuta ƒe network si le etame, eye wòwɔa Modbus protocol kple network kɔmpiutawo.
Modbus kadodomɔnu
Kadodomɔnu vevi etɔ̃ le Modbus ƒe ɖoɖowɔɖia ŋu:
lRTU (Adzɔge Ʋĩ ƒe Dɔwɔƒe) .
lASCII (Amerikatɔwo ƒe Nyatakakawo ƒe Ðekawɔwɔ Ŋuti Se) .
lTCP/IP (Gbeɖoɖoɖa Dzikpɔkpɔ ƒe Ðoɖowɔɖi/Internet Dɔwɔɖoɖo) .
Le Modbus ƒe ɖoɖowɔɖi me la, Modbus TCP kple Modbus RTU nye kadodomɔnu eve siwo bɔ wu. Togbɔ be wowɔ wo katã be woana nyatakakawo ƒe asitɔtrɔ le mɔ̃wo dome nanɔ bɔbɔe hã la, vovototo gã aɖewo le woƒe dɔwɔwɔ ƒe mɔnuwo kple dɔwɔwɔ ƒe nɔnɔmewo me.
Dzeɖoɖomɔnu kple duƒuƒu
Modbus TCP zãa TCP/IP ɖoɖowɔɖi ƒe ƒuƒoƒo hena nyatakakawo ɖoɖo ɖe networkwo dzi, ɖoa ŋu ɖe network ƒe xɔtuɖoɖowo abe Ethernet ene ŋu be woakpɔ nyatakakawo ɖoɖoɖa kabakaba kple gãwo gbɔ.
Gake Modbus RTU ya ɖoa nyatakakawo to fli siwo woɖo ɖe wo nɔewo yome abe RS-485 kple RS-232 ene, siwo ƒe nyatakakawo ɖoɖoɖa ƒe duƒuƒu le blewu vie la dzi. Nyatakakawo ɖoɖoɖa kple wo zazã ƒe nɔnɔmewo.
Modbus RTU ƒoa nyatakakawo ƒe nɔnɔmetatawo nu ƒu ɖe nɔnɔme eve ƒe nɔnɔme si le sue me, si me adrɛs ƒe agblewo, dɔwɔwɔ ƒe kɔpiwo, nyatakakawo, kple checksum ƒe agblewo le. Woɖoa nɔnɔme sia ɖe amewo nyuie le nɔnɔme eve me, si wɔe be wòsɔ na ɣeyiɣi ŋutɔŋutɔ alo teƒea ƒe dziɖuɖudɔwo, vevietɔ le nɔnɔme siwo me network ƒe xɔtuɖoɖo siwo li xoxo mele o, abe dɔwɔƒewo ƒe nuwo wɔwɔ le wo ɖokui si ƒe teƒewo, embedded systems, sensor networks, kple control system suewo ene.
Gake Modbus TCP ya trɔa nyatakaka eve ƒe byte ɖesiaɖe wòzua xexlẽdzesi eve ƒe hexadecimal ka si woɖo ɖi, si emegbe wotsɔa wo ƒoa ƒui eye woɖonɛ ɖe TCP code ƒe nɔnɔme me. Le eƒe bɔbɔe, kakaɖedzi, kple gazazã ƒe ŋutete gã ta la, wozãnɛ geɖe le nuwo wɔwɔ le wo ɖokui si ƒe ɖoɖo gãwo, nyatakakadzraɖoƒewo, xɔwo ƒe nuwo wɔwɔ le wo ɖokui si, kple dɔwɔƒewo ƒe Nuwo ƒe Internet dzi, siwo bia kadodo didiwo kple ɣeyiɣi ŋutɔŋutɔ kple liƒo ƒe nudidi gãwo hena nyatakakawo ɖoɖoɖa.
A. Application nuto me
Le adzɔnuwo wɔwɔ ƒe dɔwɔƒewo la, wozãa Modbus tsɔ doa ka kple nuwɔwɔ ƒe dɔwɔnu vovovowo eye wokpɔa ŋkuléle ɖe ewɔwɔ ƒe ɖoɖoa ŋu kple edzi kpɔkpɔ le ɣeyiɣi ŋutɔŋutɔ me; Le ŋusẽ gome la, wozãnɛ tsɔ kpɔa ŋusẽ ƒe ɖoɖowo dzi kpɔkpɔ le wo ɖokui si, si me ŋusẽ wɔwɔ, eɖoɖo, kple emama ƒe ɖoɖowo hã le; Le ʋuɖonyawo me la, wozãa Modbus na dugã me ketekemɔwo ƒe mɔzɔzɔ ƒe dzesi ɖoɖowo, ʋu ƒe nɔnɔme dzi kpɔkpɔ, kple bubuawo; Le xɔwo ƒe nuwo wɔwɔ le wo ɖokui si gome la, wozãa Modbus ɖe HVAC, akaɖiwo, kple dedienɔnɔ ƒe ɖoɖowo ŋu le xɔwo me.
Esi dɔwɔƒewo ƒe Internet kple Nuwo ƒe Internet mɔ̃ɖaŋununya va le ŋgɔ ta la, Modbus hã le nu yeyewo wɔm hele tɔtrɔm ɖe eŋu ɣesiaɣi be wòatrɔ ɖe dɔwɔƒewo ƒe nɔnɔme siwo sesẽ wu eye wole tɔtrɔm ŋu. Le kpɔɖeŋu me.
Kpuie ko la, Modbus, abe dɔwɔƒewo ƒe kadodomɔnu si tsi eye wozãnɛ le afisiafi ene, kpɔ dɔwɔƒewo ƒe nuwo wɔwɔ le wo ɖokui si ƒe mɔ̃ɖaŋununya ƒe ŋgɔyiyi teƒe eye wòɖo gɔmeɖoanyi sesẽ na dɔwɔƒewo ƒe nunya le etsɔme. Esi mɔ̃ɖaŋununya ƒe ŋgɔyiyi yi edzi la, Modbus ayi edzi awɔ akpa vevi aɖe le nu yeyewo dodo ɖe ŋgɔ kple tɔtrɔwo dodo ɖe ŋgɔ le dɔwɔƒewo ƒe kɔmamã mealo.