Modbus Communication: Industrial Network Seamless siamna kawng pawimawh ber
Modbus Communication: Industrial Network Seamless siamna kawng pawimawh ber
A tlangpuiin
Modbus hi industrial field-a hman tlanglawn tak a ni a, kum 1979 khan automation device inkara inbiakpawhna atana siam a ni. Modbus hi a tir chuan serial layer hmanga data thawn chhuahna atana application level protocol anga hman a ni a, tunah chuan serial, TCP/IP, leh User Datagram Protocol (UDP) hmanga kalpui theih turin tihzauh theih a ni bawk. He document hian protocol kalpui dan tur hrilhfiahna thuk tak a pe a ni.
Modbus protocol chu eng nge ni?
Modbus hi request response protocol a ni a, master-slave inzawmna hmanga kalpui a ni. Master-slave inzawmnaah chuan inbiakpawhna chu pahnih pahnih in a thleng fo thin (divice pakhat chuan request a initiate a ngai a, chutah chuan chhanna a nghak a ngai a), requesting device (master device) hian inbiakpawhna tin hi a initiate tur a ni. A tlangpuiin, primary device chu human-machine interface (HMI) emaw monitoring and data acquisition (SCADA) system emaw a ni a, secondary device erawh chu sensor, programmable logic controller (plcs), emaw programmable automation controller (PAC) emaw te pawh a awm thei. Heng request leh response-a thu awmte bakah heng message thawntu network layer te hi protocol layer hrang hrangin an sawifiah a ni.
Eng device nge Modbus protocol support?
Modbus protocol hi device hrang hrangin nasa takin an thlawp a, chung zingah chuan programmable logic controller (PLC), remote terminal unit (RTU), sensor, actuator, human-machine interface (HMI), leh industrial automation leh industrial field-a device chi hrang hrang tam tak te pawh an tel. Process Control Department a ni. Modbus hi hman a ni nasa hle a, manufacturing, energy, transportation, leh building automation ang chi field hrang hranga manufacturer hrang hrangte siam device inkara thawhhona (interoperability) atana de facto standard a lo ni ta a ni.
Modbus gateway hi industrial automation system network hub-te hman thin communication protocol chu a thlak danglam thei a ni. Smart device te nen inbiakpawhna a nei a, lower level device atanga data a khawlkhawm a, Modbus gateway ah a thawn a, upper computer network nen connection a siam a, network computer te nen Modbus protocol a ti bawk.
Modbus inbiakpawhna mode
Modbus protocol hian inbiakpawhna kawng pathum a nei a, chungte chu:
lRTU (Hmun hla tak atanga Terminal Unit) 1.1.
lASCII (American Standard Code for Information inthlengna) tih a ni a, hei hi a hlawhtling hle.
lTCP/IP (Transmission Control Protocol/Internet Protocol) hmanga tihchhuah a ni.
Modbus protocol-ah chuan Modbus TCP leh Modbus RTU te hi inbiakpawhna hmanraw hman tlanglawn ber pahnih an ni. Device hrang hrangte inkara data inthlengna awlsam zawka siam vek ni mah se, an implementation method leh application scenario-ah hian danglamna lian tham a awm a ni.
Inbiakpawhna hmanrua leh chakna
Modbus TCP hian network hmanga data thawn chhuahna atan TCP/IP protocol stack a hmang a, data transmission chak leh lian tham tak neih theih nan Ethernet ang chi network infrastructure a rinchhan a ni.
Modbus RTU erawh chuan serial line RS-485 leh RS-232 hmangin data a thawn chhuak a, transmission speed a slow hle. Data thawn chhuah leh hman dan tur.
Modbus RTU hian data frame te chu compact binary format-in a encapsulate a, address field, function code, data, leh checksum field te pawh a huam tel a ni. He format hi binary form-ah a tha zawkin a thawn chhuak a, hei hian real-time emaw local control application atan a tha zawk a, a bik takin network infrastructure awm tawh lohna environment-ah te, industrial automation site, embedded system, sensor network, leh control system tenau te tan a tha zawk a ni.
Modbus TCP erawh chuan binary data byte tin chu fixed two digit hexadecimal string-ah a chantir a, chu chu a inzawm khawm a, TCP code format-in a thawn chhuak a ni. A awlsamna, a rintlakna leh a man tlawm zawk avangin automation system lian tak takah, data center-ah te, building automation-ah te, leh industrial Internet of Things-ah te hman a ni nasa hle a, hei hian inbiakpawhna hmun hla tak tak a mamawh a, data thawn chhuahna atan real-time leh stability mamawhna sang tak a mamawh a ni.
ANIpplication area a ni
Manufacturing industry-ah chuan Modbus hi thil siamna hmanrua hrang hrangte thlunzawm nan leh thil siam chhuah dan (production process) real-time monitoring leh control theihna atan hman a ni a; Energy lamah chuan power system automation management atan hman a ni a, power siam chhuah, transmission, leh distribution process te pawh a tel a Transportation industry-ah chuan Modbus hi khawpui chhunga rel transit signal system siamna atan te, lirthei dinhmun enfiahna atan te, etc; Building automation lamah chuan Modbus hi building chhunga HVAC, lighting, leh security system-ah te hman a ni.
Industrial Internet leh Internet of Things technology hmasawnna avang hian Modbus hian industrial scenario buaithlak zawk leh danglam zawk nena inmil turin thil thar leh tihchangtlun zel a tum bawk. Entirnan, Modbus/TCP chu industrial Ethernet communication atana mainstream standard a lo ni chho zauh zauh a, Modbus hmanga siam gateway device te hian traditional Modbus device te chu awlsam takin tunlai network te nen an inzawm thei a, cloud storage leh data analysis te a siam thei a ni.
A tawi zawngin, Modbus hi industrial communication protocol puitling leh hman lar tak angin industrial automation technology hmasawnna a hmu a, nakin lawka industrial intelligence atan lungphum nghet tak a phum a ni. Technology lama hmasawnna kal zelah Modbus hian industrial sect-a thil thar leh inthlak danglamna thlentuah hmun pawimawh tak a chang chhunzawm zel dawn a niemaw.