Terminal resistor yog lub resistor siv hauv hluav taws xob lub tshuab hluav taws xob (xws li tuaj yeem thauj, Rs -485, profibus, thiab lwm yam). Nws lub hom phiaj tseem ceeb yog:
Ua Haujlwm:
1. Tiv thaiv kev xav txog lub teeb liab:
Nyob rau hauv lub npav system nrog kev sib kis ceev lossis ntev-yog tias lub teeb liab yog "tawg, teeb meem yuav tshwm sim, ua rau muaj kev sib txuas lus. Lub davhlau ya loog tiv lub teeb liab teeb hluav taws xob lub zog thiab tiv thaiv kev xav.
2. Kev cuam tshuam txuam:
Lub tsheb npav muaj qee yam cim imporance (piv txwv li, lub tsheb thauj mus los xij, thiab lub chaw tiv thaiv lub zog kom ntseeg tau tias cov kab ke ntawm tag nrho cov kab yog ib txwm muaj thiab txhim kho kev sib txuas lus ruaj khov.
Cov Kev Siv Cov Ntawv Sib Tw Feem Ntau:
| Sib Txuas Lus Sib Tham | Lub davhlau ya nyob twg tsis kam | Daim Ntawv Thov Kev Pab Cuam |
| Yuav npav | 120Ω | Tsheb Tsheb, Muaj Automation |
| Rs -485 | 120Ω | Kev tswj hwm cov kev tswj hwm, kev nkag mus tswj system |
| Profibus | 220 {+ 390} ω (complex tus qauv) | Muaj BackBus |
| Ethernet (thaum ntxov) | 50Ω | Coaxial cable (tsis tshua pom) |
Lub cev daim ntawv:
- Tus neeg tiv thaiv nws tus kheej (soldered ntawm pcb)
- Pluggable terminal resistor (hloov yooj yim, xws li dip hloov ntawm lub davhlau ya nyob twg)
- Network Terminator: Yuav muaj kev ywj pheej me me module ntawm rs -485 interface
Hom Kev Tshawb Fawb Lub Chaw Haujlwm Tiv Thaiv Txuas Txuas Txuas thiab Kev Siv
| Interface \/ Tsheb npav | Kev txiav tawm tus nqi tiv thaiv | Connector Hom | Txiav Daim Ntawv Davinance | Daim Ntawv Thov Kev Thov |
| Yuav npav | 120Ω | DB9 \/ M12 \/ MOLEX \/ Phoenix Terminal Thaiv | Nyob rau hauv lub txuas lossis sab nraud module | Cov khoom siv kho tsheb, cov khoom siv khoom lag luam, cov hlau |
| Rs -485 | 120Ω | RJ45 \/ DB9 \/ TERMINE thaiv \/ Phoenix | Plugable lossis jumper-teeb davhlau ya nyob module | Muaj Hluav Taws Xob, Kev Tswj Xyuas, Kev Tswj Xyuas Tsev |
| Profibus-Dp | 220Ω + 390Ω*2 | DB9 (Nrog Terminal kam hloov) | Nyob rau hauv DB9 Plug, lossis sab nraud hloov tswj | PLC, Kev Sib Txuas Lus |
| Ethernet coaxial (ntxov) | 50Ω | BNC Txuas Txuas | BNC TARTINATOR (Connector nrog Resistor) | Cov tes hauj lwm legacle, Tshaj Tawm Cov Tshuab |
| Modbus rtu | 120Ω | Rs -485 Txuas (davhlau ya nyob twg \/ DB9 \/ RJ45) | Sab nraud terminal resistor module lossis onboard jumper | Meter fais fab, ntsuas dej, kev tswj hwm kev tswj hwm |
| Lvds \/ High-ceev Digital Kev Sib Txuas Lus | 100ω lossis 120ω | High-ceev cov txuas xws li pawg thawj coj-rau-Board \/ FPC \/ SMA | Onboard lossis cable kawg pob | Muaj koob yees duab, FPGA cov laug cam, LCD cuam tshuam |
