Qhia Txog Kev Qhia PlC

Qhia Txog Kev Qhia PlC

Core Plc Cheebtsam & Interfaces

Tshaj li CPU, cim xeeb, thiab kev sib txuas lus, PLCS cov teeb meem kev lag luam tseem ceeb:

1. Kev cuam tshuam cov interfaces

• Tau txais cov cim los ntawm cov chaw siv hluav taws xob los ntawm Opto-couplers thiab cov nkag tawm cov voj voog.

• Electrically cais thiab tej yam kev cai sensor / logic ntsuas (piv txwv li, hloov pauv, hloov).

1. Tso Tawm Los Interfaces

• Ua Kom Taug Kev Tswj Xyuas Kev Tswj Xyuas Opto-Couplers Thiab Cov Tawm Hluav Taws Xob:

• Relays: Kov AC / DC loads (≤2A), qeeb qeeb (10ms)

• Transistors: DC thauj khoom nkaus xwb, kev hloov ceev hloov (0.2ms)

• Thyristors: AC loads tsuas yog, nruab nrab ceev (1ms)

Txheej Txheem PlC Kev Qhia Tawm

Kev ua haujlwm plc

Tshawb nrhiav kev ua haujlwm

1. Kev Ua Si Sab Hauv (Kev kuaj mob)

2. Cov Kev Pabcuam Sib Txuas Lus (Cov Ntaub Ntawv Hloov)

3. Cov tswv yim kuaj (nyeem tag nrho cov tswv yim)

4. Txoj Haujlwm Tiav (Khiav Logic)

5. Tso zis ua tshiab (hloov cov neeg ua haujlwm)

Scan ntev yog nyob ntawm:

• CPU nrawm (μs / kev qhia)

• Kev Pabcuam Txoj Haujlwm

• I / O Module suav

I / o Teb Lag Luam Kev Kho Mob

• Coj ncaj qha I / O Nkag Godules

• Cuam tshuam-tsav ua

• Cov Khoom Siv Ceev (> 100kHz)

100kHz)

Qhov Tseem Ceeb Xaiv Kev Cai Xaiv

• Cov Khoom Kho Vajtse

• Tus qauv: unitary rau kev yooj yim vs modular rau cov ntsuas

I / O Modules: ≥20% spare muaj peev xwm rau yav tom ntej nthuav dav

• Cim xeeb yuav tsum tau

Kwv yees: (I / O Kauv × 10) + (Timers × 5) = Cov kauj ruam tsawg kawg nkaus

• Qauv tshwj xeeb

• Analog I / O (4-20ma, ± 10V)

• MOTION (Stepper / servo)

Kev Sib Txuas Lus (Profinet, Etheracat)

Cov Lus Nug Kev Daq

Q: Dab tsi txhais tau plC?

* A: Muaj cov khoos kas digital nrog lub cim xeeb tau rau:

Logic / Txheej Txheem Tswj

Tiag tiag-lub sij hawm i / o tswj

Cov txheej txheem txuas ntxiv cov khoom siv *

Q: Kev hais lus sab hauv kev sib cav?

Cov tswv yim / oputel Relays (X / Y)

Ib tug regays (m)

Timers (t), txee (c)

Cov Ntaub Ntawv Sau Npe (D)

Q: Tus neeg hu ua haujlwm?

Electromagnetic chev energizes → Movable Heev Zov

Arc Chutes Budpress Sparchs Thaum Disconnection

Kev Lag Luam Outlook

"Niaj hnub nimno PLCS Chij cov ceg txheem sib ceg nrog kev lag luam 4.0 los ntawm kev txiav txim siab tswj, thiab IIOT kev koom ua ke txuas ntxiv mus rau kev tswj hwm kev lag luam."