Hauv kev lag luam automation systems, kev ruaj ntseg ntawm kev sib txuas lus ntawm tus tswv tsev computer thiab controllers ncaj qha cuam tshuam rau kev tsim khoom thiab khoom siv kev nyab xeeb. Thaum lub tshuab computer tsis tuaj yeem ntes tus maub los ntawm qhov chaw nres nkoj network, yuav tsum muaj txheej txheem daws teeb meem, suav nrog kev sib txuas kho vajtse, kev teeb tsa network, thiab kev teeb tsa software. Hauv qab no yog cov ncauj lus kom ntxaws txog kev daws teeb meem cov kauj ruam thiab cov kev daws teeb meem:
I. Tshawb xyuas kev sib txuas ntawm lub cev
1. Txheeb xyuas Network Cable thiab Interface Status
● Siv lub tshuab kuaj kab mob los kuaj xyuas cov kab txuas txuas ntxiv. Xyuas kom tag nrho 8 tus pins txuas nrog yam tsis muaj tus ntoo khaub lig-kab (ncaj- los ntawm cov cables yuav tsum ua raws li T568B tus qauv).
● Tshawb xyuas RJ45 chaw nres nkoj hu rau oxidation. Kuaj nrog lwm qhov chaw nres nkoj yog tias muaj. Thaum siv cov khoom siv xws li MB_SmartGateway, txheeb xyuas lub rooj vag qhov chaw nres nkoj qhov taw qhia.
2. Network Topology Verification
● Direct Connection Scenario: Xyuas kom tus tswv lub computer txuas ncaj qha mus rau tus maub los ntawm Ethernet cable.
● Hloov Scenario: Txheeb xyuas qhov hloov pauv lub zog hluav taws xob thiab ntsuas qhov chaw nres nkoj uas siv lwm yam khoom siv.
● Nco ntsoov cov teeb meem ntawm electromagnetic cuam tshuam nyob rau hauv ib puag ncig kev lag luam. Shielded Qeb 5e lossis siab dua cables yog qhov tseem ceeb nyob ze ntawm qhov muaj zog cuam tshuam xws li cov tsav tsheb sib txawv.
II. Network Parameter Configuration
1. IP Chaw Nyob Teebmeem Teebmeem
● Siv ARP -ib lo lus txib los tshuaj xyuas IP tsis sib haum hauv LAN.
● Tus maub los lub neej ntawd IP tej zaum yuav nyob hauv qhov chaw nyob ntiag tug xws li 192.168.1.x lossis 10.10.10.x (nws txawv ntawm hom).
2. Subnet Mask thiab Gateway Chaw
● Xyuas kom tseeb tias lub khoos phis tawj thiab tus tswj hwm nyob rau tib lub subnet (piv txwv li, hauv qab 255.255.255.0 daim npog ntsej muag, thawj peb tus lej IP yuav tsum sib phim).
● Cov khoom siv muaj feem ntau yuav tsum tau ua kom tsis siv neeg IP qhov tau txais (DHCP), yuav tsum muaj kev teeb tsa chaw nyob zoo li qub.
3. Firewall thiab Antivirus Software
● Ib ntus lov tes taw Windows Defender firewall rau kev sim.
● Ntxiv cov cai inbound/outbound hauv Advanced Security Settings kom tso cai rau cov chaw nres nkoj sib txuas lus (cov chaw nres nkoj muaj raws tu qauv: 502/Modbus TCP, 44818/EtherNet IP).
III. Protocol thiab Software Configuration
1. Kev sib txuas lus raws tu qauv sib phim
● Txheeb xyuas tus tswv lub khoos phis tawj software txhawb nqa tib hom kev cai (piv txwv li OPC UA, Modbus TCP) ua tus tswj hwm.
● Tshawb xyuas cov txheej txheem tsis tu ncua: qhev chaw nyob, ua haujlwm code, sau npe daim ntawv qhia, thiab lwm yam.
2. Tsav thiab Firmware Versions
● Hloov kho network daim npav tsav tsheb mus rau qhov tseeb version, tshwj xeeb tshaj yog rau cov ntawv muaj xws li Realtek.
● Xyuas kom tus maub los firmware tau sib xws nrog tus tswv software version (xws li, qee qhov CODESYS platform li muaj cov qauv tshwj xeeb uas yuav tsum tau ua).
3. Packet Capture Analysis
● Kev ntes cov pob ntawv network siv Wireshark, tsom mus rau:
◆ Txawm hais tias ARP thov tau txais cov lus teb.
◆ Seb lub hom phiaj IPs rov qab ICMP tsis tuaj yeem ua yuam kev.
◆ Kev sib pauv lus tshwj xeeb raws tu qauv (piv txwv li, Modbus TCP Transaction Identifier teb).
IV. Advanced Troubleshooting
1. VLAN thiab QoS nqis
● Txheeb xyuas yog tias VLAN segmentation ntawm cov keyboards ua rau muaj kev sib cais tawm.
● Cov tes hauj lwm muaj peev xwm tuaj yeem ua rau QoS qhov tseem ceeb cim (xws li DSCP 46 rau kev tswj xyuas qhov tseem ceeb).
2. MTU thiab Ncej Loj
● Kev ntsuas txo MTU qhov tseem ceeb (piv txwv li, mus rau 1400 bytes) los txiav txim qhov teeb meem fragmentation.
● Qee cov tswj hwm qub txeeg qub teg tsis txhawb Jumbo Frames (thav duab ntau dua 1500 bytes).
3. System Service Status
● Txheeb xyuas cov kev pabcuam tseem ceeb yog ua haujlwm:
◆ DHCP Client (txawm tias siv IP zoo li qub).
◆ DNS Client.
◆ Kev sib txuas hauv Is Taws Nem.
V. Alternative Solution Testing
1. Hloov Chaw Sib Txuas Lus
● Sim fiber ntau converters kom tshem tawm electromagnetic cuam tshuam.
● Ntsuas cov kev daws teeb meem wireless txuas (xws li, 5GHz industrial WiFi).
2. Txoj Cai Hloov Hloov Kev daws teeb meem
● Hloov Ethernet rau RS485 kev sib txuas lus los ntawm cov neeg rau zaub mov serial.
● Siv OPC Server ua cov khoom nruab nrab rau kev hloov pauv raws tu qauv.
3. Tswj Hoobkas pib dua
● Restore network parameters ntawm hardware reset khawm (rov qab mus configuration ua ntej).
VI. Cov ntaub ntawv thiab kev txheeb xyuas log
1. Saib xyuas cov ntaub ntawv qhia txuj ci
● "Network Troubleshooting" seem nyob rau hauv cov maub los tus neeg siv phau ntawv.
● Chaw tsim khoom paub cov khoom siv.
2. System Log Review
● Lim Networking- cuam tshuam txog qhov yuam kev hauv Windows Event Viewer.
● Controller diagnostic buffer cav (feem ntau nkag tau ntawm lub web interface).
Yog tias qhov teeb meem tshwm sim tom qab ua tiav cov kauj ruam saum toj no, siv cov txheej txheem hloov ntu: Npaj paub- cov tswj hwm zoo, daim npav network, hloov pauv, thiab lwm yam, rau kev sib tw -. Ib txhij, suav rau qhov chaw muaj kev lag luam- tej yam kev mob tshwj xeeb: siv cov cuab yeej muaj kev nyab xeeb nyob rau hauv qhov chaw tawg- pov thawj thaj chaw, thiab xav txog kev khiav hauj lwm kub nyob rau hauv siab - cua sov ib puag ncig. Kev sau cov txheej txheem daws teeb meem tiav yog qhov tseem ceeb rau kev saib xyuas yav tom ntej thiab tus neeg muag khoom txhawb nqa. Tsim ib daim ntawv qhia ntxaws nrog rau lub sijhawm, cov kauj ruam ua, thiab cov txiaj ntsig kev xeem. Rau cov txheej txheem nyuaj, xav txog kev siv network topology scanning cov cuab yeej (xws li, LANsurveyor) los pab nrhiav qhov chaw txhaum.