1785-BEM

分類：
選擇深圳長欣，選擇放心，售后無憂
大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
了解產(chǎn)品更多詳細(xì)信息或購買請(qǐng)撥打以下電話咨詢：
白工微信
（加微信咨詢）

聯(lián)系人:白工

電話:18150087953 / 18005022138

Whatsapp/Wechat:+8618150087953 / +8618005022138

Email：sales@cxplcmro.com

描述

1785-BEM

?近幾年來，可編程序控制器(PLC)以其可靠性高、適應(yīng)性強(qiáng)、靈活性好、編程簡單、容易掌握等特性，在各個(gè)領(lǐng)域發(fā)揮越來越重要的作用。在PLC控制系統(tǒng)中，PLC作為主要控制設(shè)備，必然與控制對(duì)象中各種輸入信號(hào)(如按鈕、限位開關(guān)、拔動(dòng)開關(guān)、繼電器的觸點(diǎn)及其它檢測信號(hào)等)和輸出設(shè)備(如繼電器線圈、接觸器線圈、電磁閥等執(zhí)行元件)相關(guān)聯(lián)。在實(shí)際工作中，由于受PLC應(yīng)用系統(tǒng)規(guī)模的限制，PLC輸入/輸出點(diǎn)數(shù)往往不夠用。為此若采用擴(kuò)展輸入/輸出單元或更換點(diǎn)數(shù)更多的PLC來解決有時(shí)又不合算，為了降低系統(tǒng)硬件的成本，常常采用各種技巧減少系統(tǒng)占用的輸入/輸出點(diǎn)數(shù)，相當(dāng)于擴(kuò)展了PLC的I/O點(diǎn)數(shù)。本文從硬件、軟件兩個(gè)方面介紹在不增加硬件情況下“擴(kuò)展”PLCI/O點(diǎn)數(shù)的幾種方法。
? ? 2“擴(kuò)展”I/O點(diǎn)數(shù)的方法
? ? 2.1分組輸入
? ? 有些PLC控制既有“手動(dòng)控制”又有“自動(dòng)控制”，而自動(dòng)控制程序和手動(dòng)控制程序不會(huì)同時(shí)執(zhí)行，這時(shí)可將自動(dòng)與手動(dòng)信號(hào)按不同控制狀態(tài)要求分組接入PLC輸入端子，如圖1所示(本文以三菱FX2小型PLC編號(hào)分配為例進(jìn)行梯形圖設(shè)計(jì))。圖1中SA用來選擇自動(dòng)/手動(dòng)程序，供自動(dòng)/手動(dòng)切換之用，SB2和SB1按鈕都使用X0輸入端，但它們不會(huì)同時(shí)起作用，圖1中的二極管用來切斷寄生信號(hào)，避免錯(cuò)誤信號(hào)的產(chǎn)生。這樣，通過PLC的硬件公共點(diǎn)(COM)接線的轉(zhuǎn)換和軟件分時(shí)執(zhí)行各自不同的用戶程序段的方法，使得PLC的一個(gè)輸入點(diǎn)可分別反應(yīng)兩個(gè)輸入信號(hào)的狀態(tài)，起到兩個(gè)輸入點(diǎn)的作用，來完成PLC在兩種工作狀態(tài)下的輸入功能，提高了PLC輸入點(diǎn)的利用效率，相當(dāng)于擴(kuò)展了PLC的輸入點(diǎn)的實(shí)際數(shù)量。其它X1-X7端相似。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢(shì)價(jià)格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家

Parker Pressure Comp Flow Control 3000PSI # PCMS1600S

Parker Hydraulic Pump Pressure Comp Piston 32GPM P2075P

PARKER HYDRAULIC PRESSURE REDUCING VALVE~NEW~SURPL?US~

PARKER 422-8-RL MEDIUM PRESSURE HYDRAULIC HOSE 1/2″

PARKER PR3MM Pressure Reducing Valve

NEW PARKER R6PH PRESSURE CONTROL VALVE

3 Parker Low Pressure Regulators SQMICRO130E602P?FSMM

Parker Hydraulic Pressure/Temp CompFlow Control FG3PKCA

PRESSURE REDUCING GAUGE VERIFLO PARKER NPR73530W4PXFSM

Parker Proportional Pressure Valve NIB

New Overstock Parker A4ADB Pressure Regulator Valve

Parker Low Pressure Regulator SQ2MICRO0302PFS?MM New

NEW PARKER PRESSURE SWITCH SCPSD-250-04-17

Parker 240′ 1/2″ Low Pressure 250 PSI Rubber Hose 801-8

PARKER PRESSURE REGULATOR VALVE – REFRIGERATION

Parker RAS-600-S4 RAS600S4 RAS600S Pressure Valve NEW

Parker Hydraulic Pressure Compensated Flow Control

NIB Parker Veriflo Pressure Regulator 3000 PSI 41500617

Parker RAS600S Pressure Control Valve RAS600S

Parker PRC3MM Pressure Control Valve Hydraulic

8523 NEW Parker A4AD Pressure Regulator

Parker 214′ 1/2″ Low Pressure 250 PSI Rubber Hose 801-8

2658 NEW PARKER A4AD Refrigerant Pressure Regulator

Parker PR-1-4114-2 High Purity Pressure Regulator

PARKER PSB040AF1A HYDRAULIC PRESSURE SWITCH NIB

Parker PR-3-4118-1 ?” PTFE Pressure Regulator

Parker 959100W2PFSMM High Pressure Regulator NEW

PARKER PRESSURE DRIVER CARD 801179 **NICE**

PARKER PRM3AA25KNS 50 PRESSURE CONTROL VALVE New

Parker Hydraulic Pump Pressure Comp Piston 5GPM #PAV10

Parker BC10BMV 10 pressure control Valve NNB BC10BMV10

PARKER PRDM3PP02SVS PRESSURE REDUCING VALVE 315 BAR NEW

Parker Veriflo Pressure Regulator

Parker Hydraulic Pump Pressure Comp Vane 45D10L1A1B1AC

Parker 3000 PSI Hyd Pressure Cylinder 03.25JJ2HTS #6078

Parker Oildyne OE4-SBHS-5K Hydraulic Pressure Switch

Parker Convum MPS-R3F5-NC Stainless Pressure Sensor New

PARKER A810E FLO-CON OUTLET PRESSURE REGULATOR 85272

New Parker Manapak Pressure Reducing Valve PRM3PA17KN32

PARKER REGULATOR BACK PRESSURE, BR-3-1168-2

Parker Low Pressure Regulator SQMICRO130E602P?FSMM New

Parker Low Pressure Regulator SMSQ2MICRO30102 New

Parker Hyd Pressure Reducing Valve PRDM2PP16SUS (NIB)

NEW PARKER VERIFLO DSG HP PRESSURE REDUCING REGULATOR

NEW, PARKER PRESSURE REDUCING VALVE PR800SM-20KE

PARKER HYDRAULIC PRESSURE REDUCING VALVE R6PM

Parker RAS-600-S4 RAS600S4 RAS600S Pressure Valve USED

Parker hydraulic pressure reducing valve FM3DDKN-50

Parker Hydraulic Pressure Reducing Valve

Parker Hydraulic Ring ASB250AF1A4 Pressure transducer

7134 NEW Parker A4A Pressure Regulator 1″

Parker Pressure Reducing Valve AR FM3DDKN 55

Parker Pressure Reducing Valve DR FM3DDKN 55

Parker 621B-6 Pressure Control Valve 621B6 USED

Parker PRDM2PP16SVG, Pressure Reducing Valve NEW

Parker PRDM2BB16LVM, Pressure Reducing Valve NEW

Parker PRDM2BB02LNM, Pressure Reducing Valve NEW

Parker PRDM2PP02LNM, Pressure Reducing Valve NEW

PARKER 626092 OILDYNE PRESSURE SWITCH 0E4-SBKS-44K NEW

PARKER HYDRAULIC PRESSURE REDUCING VALVE PRDM2PP16LNS

PARKER PRDM2PP16SVGX79?7 PRESSURE REDUCING VALVE NIB

PARKER MODEL A4A PRESSURE REGULATOR 2 1/2″ NEW

PARKER PRM3PP25K HYDRAULIC PRESSURE CONTROL VALVE

Parker Flo-Con By-Pass Pressure Regulator SM080128 NIB

Parker Pressure Filter F3-15P-1-40SA-E?S-50-XX-11-80

Parker 41975 20-20 Clamp SAE flange high pressure

Parker PRM3PAH-20GB Pressure Reducing Valve

Parker PR400SHV Pressure Reducing Valve

NOS! PARKER REMOTE PRESSURE AIR VALVE CWJ12501

NEW Parker Hydraulic Filter 932630Q High Pressure

Parker D39DW11C4N89 75, PRESSURE REGULATION VALVE , NEW

PARKER VERIFLO IR400S4PG PRESSURE REDUCING REGULATOR

NOS! PARKER REMOTE PRESSURE VALVE CC1225B

LOT PARKER VERIFLO PRESSURE TRANSDUCER SWITCH DWYER

Parker Oil Pressure Regulator Control Valve A4AL; *A7

Parker high pressure clamp flange elbow 41775-16-16

Parker 41575 16-16 Clamp SAE flange high pressure 1 in

Parker 035682000B Pressure Regulator

Parker Veriflo 944AOPLPNOSFSFF High Purity Low Pressure

PARKER HIGH PRESSURE BALL VALVE # BV3H06S2SS1N

LARGE PARKER 1″ AIR PRESSURE REGULATOR NEW 035682000B
Expedited shipping available

PARKER 035662000B PRESSURE REGULATOR 5-125 PSIG NEW

Pressure Pump Inlet Filter **NEW** Part#1J2-5

Parker Flo-Con Pressure Regulator A7-A

PARKER FP2AUS14 250 PRESSURE 1.000 STROKES AIR

PARKER H2 1/2″ SAFETY PRESSURE RELIEF VALVE REFRIGERANT

Parker 73212BN52N00 3/4″ Skinner Pressure Vessel 2-Way

PARKER REMOTE PRESSURE VALVE CC1225B 150 PSI DO 1/4″

Parker Veriflo IR4205 Stainless High Pressure Regulator

PARKER 1/4 NPT CONTROLLED PRESSURE SAFETY THUMB LEVER

Parker Veriflo 1/4″ Pressure Regulator (SQ2MICRO130E60?)

Parker Pressure Regulator 72-130
Expedited shipping available

NEW PARKER FLO-CON BYPASS HOT GAS PRESSURE REGULATOR A9

3 NEW PARKER MANAPAK PRESSURE CONTROL VALVES PRM2PP07KN

5 PARKER SENSOCONTROL PRESSURE SWITCH SCPSD-600-04-07

LOT 2 PARKER PRESSURE REGULATOR MASTER PNEUMATIC FILTER

parker bvhp12bss1na HIGH PRESSURE BALL VALVE

2″PARKER BRUNING HI PRESSURE INLINE CHECK VALVE DC20005

PARKER HIGH PRESSURE HOSE

Parker PRM3 PP17K Pressure Reducing Valve 150-2500 PSI

A810E Parker FLOCON 1-3/8″ Outlet Pressure Regulator
One-day shipping available

PARKER/SCHRADER BELLOWS PRESSURE REGULATOR 035662000B

2683 NEW Parker 201673 Pressure Regulator

PARKER HYDRAULIC PRESSURE REDUCING VALVE V-21 FT

New Parker CPOM2AAV55X Pilot-Oper. Pressure Check Valve
Expedited shipping available

NIB PARKER BVHP16SSS1NA HIGH PRESSURE BALL VALVE
Expedited shipping available

Parker Hydr. Pressure Reducing Module D03 # BD03PNR-A

Parker 035643000B Pressure Regulator NEW Free Shipping
One-day shipping available

Parker hydraulic cylinder model C2H19 PRESSURE 3000

Parker 3/8″ S. Air Dual Pressure Switch New

Parker Hannifin Hydraulic Pressure Control Valve 3000

Parker Pressure Switch Male DIN P01909

NEW PARKER BI-PRESSURE PUMP CONTROL FPS-213

Parker hydraulic filter assembly , pressure switch 18p

PARKER PRESSURE REDUCING HYDRAULIC VALVE PRM3PB25KN 32

PARKER PRESSURE REDUCING HYDRAULIC VALVE PRM3PAH-20HY

PRESSURE REDUCING RELIEF VALVE, PARKER #PR101S10-C3F

Parker SensoControl Senso Control SCP-8181 Pressure

NEW PARKER VERIFLO IR501B6P0140458?0 PRESSURE REGULATOR

*NEW* Parker Senso Control Pressure Controller #SCPSD

Parker grade 10 Hi pressure filter element 10CWC08-033

Parker 1/2″ remote pressure valve SS121050 NIB
One-day shipping available

MAZAK PARKER PRESSURE REGULATOR UNIT

PARKER VERIFLO 43200648 PRESSURE TRANSDUCER

Parker Veriflo Pressure Regulator Valve 45100064 SS

專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊

PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家


選擇深圳長欣，選擇放心，售后無憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營：本特利，英維思，伍德沃德，福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊(cè)”（不管能不能看懂，先了解個(gè)大概，以便學(xué)習(xí)編程時(shí)查找）；
2、由位控邏輯入手，逐漸增加定時(shí)、計(jì)數(shù)等條件，把或、與、非關(guān)系理順；
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個(gè)物理回路驗(yàn)證，比如變頻器+電機(jī)+測速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時(shí)也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會(huì)一種至于其它的學(xué)習(xí)起來也就簡單了。

相關(guān)產(chǎn)品