Sep 15, 2024 Tso lus

Yuav ua li cas xyuas yog tias koj RS485 tsis sib txuas lus?

Yog tias koj RS485 tsis tuaj yeem sib txuas lus, koj tuaj yeem daws teeb meem los ntawm cov hauv qab no:

1. Txheeb xyuas cov kab hluav taws xob thiab kev sib txuas:

Xyuas kom tseeb tias tag nrho cov kev sib txuas ruaj ntseg thiab siv cov pins kom raug. Rau RS485, qhov no feem ntau suav nrog A (Data +), B (Data-), thiab hauv av.
Txheeb xyuas qhov polarity ntawm lub teeb liab sib txawv. Kev sib txuas rov qab ntawm kab A thiab B yuav ua rau tsis muaj kev sib txuas lus.

2. Terminal resistors:

Terminal resistors (feem ntau yog 120 ohms) yuav tsum tau muab ntsia rau ntawm ob qho kawg ntawm RS485 tsheb npav los tiv thaiv kev cuam tshuam teeb liab. Yog tias ploj lawm lossis teeb tsa tsis raug, nws yuav ua rau muaj teeb meem kev sib txuas lus.

3. Bus bias:

Lub tsheb npav RS485 yuav xav tau kev tsis sib haum xeeb thaum nws tsis ua haujlwm kom lub tsheb npav hauv lub xeev paub thaum tsis siv. Yog tsis muaj kev tsis ncaj ncees, lub npav yuav nyob rau hauv lub xeev tsis meej, cuam tshuam kev sib txuas lus.

4. Ntaus chaw nyob tsis sib haum:

Paub meej tias qhov chaw nyob ntawm lub cuab yeej ntawm lub tsheb npav yog qhov tshwj xeeb. Qhov teeb meem tsis sib haum xeeb yuav ua rau lub cuab yeej tsis teb ib txwm.

5. Baud tus nqi sib tw:

Paub meej tias tus nqi baud, cov ntaub ntawv cov khoom, nres cov khoom, thiab cov khoom sib xws ntawm txhua yam khoom siv tau teeb tsa tas li. Yog tias cov kev ntsuas no tsis sib xws, kev sib txuas lus yuav ua tsis tau.

6. Ntaus fais fab mov:

Xyuas kom tseeb tias lub hwj chim ntawm tag nrho cov khoom siv ua haujlwm zoo thiab qhov hluav taws xob ruaj khov. Yog tias qhov hluav taws xob tsawg dhau los yog hloov pauv, nws yuav ua rau muaj kev cuam tshuam kev sib txuas lus.

7. Tshawb xyuas cov teeb liab cuam tshuam:

RS485 kev sib txuas lus tau yooj yim cuam tshuam nyob rau hauv ib puag ncig uas muaj zog electromagnetic cuam tshuam. Koj tuaj yeem sim siv cov kab thaiv thaiv los yog kos rau hauv thaj chaw uas yuav cuam tshuam.

8. Puas yog lub cuab yeej txhawb nqa RS485:

Paub meej tias cov cuab yeej thiab kev sib txuas siv tau txhawb nqa RS485 kev sib txuas lus raws tu qauv.

Los ntawm kev tshuaj xyuas txhua yam khoom ib los ntawm ib qho, koj tuaj yeem pom qhov ua rau ntawm RS485 teeb meem kev sib txuas lus.

Hais txog Premier Cable

Premier Cable yog ib lub chaw tsim khoom ntawm USB serial cables, serial converters, thiab cable los ua ke & hlau harnesses, cog lus los muab cov neeg muas zaub nrog high-zoo, ruaj khov, thiab txhim khu kev qha kev sib txuas lus daws teeb meem. Peb cov khoom kab tiav, suav nrog USB rau RS232, RS485, RS422, TTL, UART, thiab lwm yam kev hloov pauv hloov pauv cables, nrog rau RS232 rau RS485, RS422, TTL converters. Rau cov xwm txheej sib txawv ntawm daim ntawv thov, peb tau tsim tawm tshiab 2-hauv-1 thiab 4-hauv-1 cov khoom tsim ua haujlwm los coj cov neeg siv kev sib txuas zoo dua. Txawm hais tias nws yog kev lag luam automation, khoom siv sib txuas lus, lossis kev sim thiab ntsuas, Premier Cable tuaj yeem muab cov kev daws teeb meem rau koj.

What to check if your RS485 is not communicatingUSB to RS485 converter USB to Terminal Block RS485 communication adapter cable