Vim tias muaj ntau qhov RS-232 lossis RS-485-based networks tseem tuaj yeem ua tau raws li lawv lub hom phiaj, ntau lub tuam txhab tseem siv D-sub txuas. Ntau lub tshuab qub thiab khoom siv tsis txhawb Ethernet tswj thiab tseem tuaj yeem ua haujlwm tau zoo thiab tsim nyog rau kev siv. Yog li ntawd, tsis tas yuav rov tsim dua ib yam dab tsi uas ua haujlwm zoo kawg nkaus.
Ntxiv rau Modbus RTU tes hauj lwm, R-232 thiab RS-485 connectors, uas yog D-sub connectors, kuj siv nyob rau hauv Profibus DP tes hauj lwm. Hauv ob qho tib si, kev ua haujlwm ntawm kev siv RS-485 interface zoo ib yam.
D-sub connector tuaj yeem siv tau nyob txhua qhov chaw ntawm lub cuab yeej tsis xav tau cov lus txib nyuaj. Ib qho piv txwv zoo yog valve terminal tswj. Hauv qhov no, lub xeev siab ntawm tus pin yog lub luag haujlwm rau kev ua kom ib qho ntawm cov coils.
Ib qho tshwj xeeb ntawm D-sub connector yog cov ntsia hlau ntawm ob sab ntawm lub ntsaws. Lawv pab ua kom lub ntsaws ruaj ruaj kom raug hauv lub qhov (socket), thiab tseem tiv thaiv kev tsis sib haum xeeb. Qhov no yog ib qho laj thawj vim li cas D-sub connectors tseem muaj nyob rau hauv kev lag luam railway.
Qhov tseeb hais tias cov kev sib txuas yog tsau nrog screws txo qhov kev pheej hmoo ntawm cables loosening vim kev co. Piv txwv li, lub tsheb ciav hlau txav mus, nws yog qhov tsis lees paub tias qhov kev vibration tsis yog me me, thiab nyob rau hauv qhov xwm txheej hnyav nws yuav ua rau lub ntsaws kom xoob, uas tsis yog qhov zoo tshaj plaws - tshwj xeeb tshaj yog qhov yuam kev uas yuav ua rau muaj kev puas tsuaj ntawm kev tsheb ciav hlau.
D-sub connector yog qhov nrov tshaj plaws, tab sis nws tseem tsis tau siv. Nws yog classic VGA connector siv los txuas rau lub monitor. Nws tau pib hloov los ntawm DVI, tab sis dhau sijhawm, HDMI tau dhau los ua txoj hauv kev zoo tshaj plaws los txuas lub khoos phis tawj saib rau lub computer.
