140CHS11000

分类:
选择深圳长欣,选择放心,售后无忧
大量现货,当天顺丰发货!
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联系人:白工

电话:18150087953 / 18005022138

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Email:sales@cxplcmro.com

描述

140CHS11000

为了完成控制策略,为了替代继电器,使用户等完成类似继电器线路的控制系统梯形图,而编制了一套控制算法功能块(或子程序),称为指令系统,固化在存贮器ROM中,用户在编制应用程序时可以调用。指令系统大致可以分为两类,即基本指令和扩展指令。细分一般PLC的指令系统有:基本指令、定时器/计数器指令、移位指令、传送指令、比较指令、转换指令、BCD运算指令、二进制运算指令、增量/减量指令、逻辑运算指令、特殊运算指令等,这些指令多是类似汇编语言。另外PLC还提高了充足的计时器、计数器、内部继电器、寄存器及存贮区等内部资源,为编程带来极大方便。
 基于Windows的编程语言标准—IEC61131-3
    由于各PLC厂家产品在指令系统上的差异及编程方法上用户要求不同,近年来IEC制订了基于Windows的编程语言标准IEC61131-3(1993年IEC颁布可编程序控制器的国际标准IEC1131),它规定了指令表(IL)、梯形图(LD)、顺序功能图(SFC)、功能块图(FBD)、结构化文本(ST)五种编程语言。这包括了文本化编程(IL、ST)和图形编程(LD、FBD)两个方面,而SFC则在两类编程语言中均可使用。IEC技术委员会(TC65)进来开展了IEC61499项目,将IEC61131-3进行了扩展,它是针对通过通信网络互联的模块化分布系统的体系结构的标准,将对IEC61131-3有所改善。这是以数字技术为基础的可编程序逻辑控制装置在高层次上走向开放性的标准化文件,是PLC发展的一大趋势。

产品承诺:
保 证 全新原装进口,
保 证 安全准时发货,
保 证售后服务质量,
优势价格,大量现货。

主营DCS系统配件
机器人系统配件
大型伺服系统配件
品牌:ABB   ,AB  ,GE,FOXBORO,本特利,英维思,伍德沃德,西屋,瑞恩,施耐德,西门子,摩托罗拉,安川。力士乐。ACSO,横河等进口品牌。Triconex Siemens Yaskawa ABB GE Ovation AB Foxboro Motorola Schneider XYCOM KUKA

Siemens 6DS1604-8AA BA 16-400mA Teleperm M

Siemens 6DS1604-8AA 16-400mA Teleperm M

Siemens 6DS1702-8AA 4AA Teleperm M

Siemens 6DS1702-8AA or 6DS17028AA Teleperm M

Siemens 6DS1700-8BA or 6DS17008BA Teleperm M

Siemens 6DS1713-8AB 4AE Teleperm M

Siemens 6DS1701-8AB or 6DS17018AB Teleperm M

Siemens 6DS1713-8AB or 6DS17138AB Teleperm M

Siemens 6DS1403-8BA or 6DS14038BA Teleperm M

Yaskawa SGDH-20EEY338 Servopack Service

Yaskawa SGDK-15AEA Servopack Service

Yaskawa SGDH-2020A11AVY​740 Servopack Service

Siemens 6DS1000-8AA or 6DS10008AA SVB Teleperm M

Siemens 6DS1702-8RR or 6DS17028RR Teleperm M

Yaskawa SGDK-3030AEA Servopack Service

Siemens 6DS1604-8AA BA32 Teleperm M

Siemens 6DS1604-8AA Teleperm M

Siemens 6DS1703-8AB or 6DS17038AB Teleperm-M

Siemens 6RA7025-6DS22-0​-Z Simoreg Stromrichter

Siemens 6DS1602-8AA Teleperm M

Siemens 6DS1603-8AB Teleperm M

Siemens 6DS1603-8BA Teleperm M

KME 26S14019 MONITOR

Philips PE1915/00BNC941​5019 15002 Power Supply

FIMET MAT 100LA4/8 or MAT100LA4-8 ASYNCHRONMOTOR

Mitsubishi MDS-A-CV-300 Power Supply Repair

Siemens 6DS1403-8CA or 6DS1403-8CA Teleperm M

Hosiden HLM-8619 or 6AV3572-2FM00 FOR OP25 Display

Siemens 6DS1602-8BA or 6DS16028BA Teleperm M

Siemens 6DS1602-8AA BE32 Teleperm M

Yaskawa JPAC-C345.YA Board

FANUC A06B-6093-H152 SERVO AMPLIFIER UNIT A06B6093H152

Siemens 6DS1403-8AA Teleperm M

Siemens 6DS1403-8AA 2PI-K Teleperm M

Mitsubishi FR-Z034-1.5K Inverter

SEW MC07A004-2B1-4-​00 MOVITRAC

Siemens 6ES5314-3UA11 mit NA18100-5003 Board

Fanuc GE 18i-M or A02B-0236-D841-​A Bedienertermina​l

Yaskawa USAFED-20FB2T mit UTOPI-500UB AC Servo Motor

Mitsubishi MR-SB50 AC Servo

Siemens G85139-E1721-A8​8 Steuerplatine

Siemens 6FX1132-8BB01 or SINUMERIK

Siemens 6GK1500-0AA00 Bus Terminal

Bauer G12-10-DK 84-200L Getriebemotor

Siemens 6SE3190-0XX87-8​PB0 PROFUBUS

6FC5111-0CA04-0​AA0 or 6FC51110CA04-0A​A0 Siemens

Siemens 6FC5111-0CA02-0​AA2 6FC51110CA020AA​2 SINUMERIK

Siemens 6ES5-482-8MA12 or 6ES5482-8MA12 Simatic S5

SIEMENS 6ES5-705-0AF00 OR 6ES5705-0AF00 KABEL

DINA DNDS 2C OR DNDS 2D DREHZAHL UND STILLSTANDSW�CH

Siemens 6ES5-451-7LA11 or 6ES5451-7LA11 Simatic S5

150BLM32S Display

SHARP LM64P83L DISPLAY

Toshiba LTM10C209A Display

Fanuc A61L-0001-0074 TX-1450AB Monitor

Siemens 6SE6400-7AA00-0​AG0 or 6SE64007AA000AG​0 Luefter

Siemens 6ES5-482-8MA13 or 6ES5482-8MA13 Simatic S5

Siemens 6FX1125-8AA04 Board

FANUC AC SERVO MOTOR 5F-3000 A06B0345B331

Gould Modicon W621-000 600 Series Bus Cable

Mitsubishi PM30CNA060 or 60DK2 Transistormodul​e

Fanuc A860-2005-T301 Pulscoder

BALLUFF .. SENSOR

Bosch EG Rack

KLOECKNER MOELLER ZB4-303-KB1 PROGRAMMIERKABE​L

Berger Lahr RSM 50/6 FG or RSM50/6FG Motor

Siemens 6ES7 971-1AA00-0AA0 or LS14250 Lithium Cell

AEG Modicon 5039-042.233 854 or 233854.06 Kabel

Micropolis 900526-02-1R Disk Memory Unit

Honda MR-20L CONNECTOR

Siemens FRC-50 Kabel

Fanuc 01P04 CNOP or MR-50LW KABEL

Contraves NDK308-926a Trafo

TRAMAG EJ843 Trafo

LUST FU 2404 Frequenzumricht​er

PULSOTRONIC 9918-26 MICRO SWITCH

Fanuc A80L-001-0050 Transformer

AEG SCHNEIDER AUTOMATION TSX3721100 PLC MODULE RACK

Texas Instruments 5TI-2459514 Cable

Siemens PBT20 or 6AV9020-1DB00 Prozessebedient​astatur

GE FANUC IC640MWS905A WORKMASTER SYSTEM

MAGNETEK GPD503 DS317 UMRICHTER

Toshiba T0CP 200 Optic Cable

Toshiba TOCP80 Optic Cable

Fanuc A20B-0008-0480/​03A Board

Fanuc A87L-0001-00150​-8F or BMU-64-1 Board

Siemens 6ES5 318-8MB12 or 6ES5318-8MB12 Simatic S5

Lenze EVF 8201-E or EVF8201-E FREQUENZUMRICHT​ER

Fanuc MR-50L Connector

Siemens 6FX5002-2CF02-1​AF or E172119 Kabel

Siemens 6ES5-762-2AA12 or 6ES5762-2AA12 Bus Connector

HRStot CNS11 Cable

Indramat APRB 02-03 or APRB02-03-FW SERCOS interface

Siemens 6ES5727-1BD00 Kabel

Siemens 6ES5727-1BD20 Kabel

AUT110WS OR 43004/955 TRAFO

MURRELEKTRONIK RC3/022-400BU ENTSTOERMODUL FUER MOTOR

SEW EURODRIVE BW 106 or BW106 Bremswiderstand

Murrelektronik MRC 3/047-500 Entstoermodul fuer Moto

YASKAWA SGM-02A3SU21 AC SERVO MOTOR

SIEMENS 6ES5-420-7LA11 DIGITAL INPUT 6ES5420-7LA11

Berger Lahr MDP 5-9 Rack

Berger Lahr D670.00 or RS02 Netzteil

Siemens 6SC6112-0AA00 VORSCHUBMODUL

Siemens 1FK6084-6AZ21-9​ZZ9-Z-S05 Motor

Siemens 6EP1436-2BA00 Power Supply

SANYO HFT604M ZEILENTRAFO

Siemens 6ES5701-1LA1 Simatic S5

Siemens 6ESS5675-0UA11 PG 675

Fanuc A20B-0008-0430.​03A CRTS/PUNCHER

Siemens 6FC5210-0DF24-0​AA0 SINUMERIK PCU 70

Contraves ADB380.60M 34kVA VARIDYN Compact

Orega 40326-111 Trafo

BALLUFF BES516-110-Y INDUKTIVE SCHALTELEMENTE

Siemens ZKB465/601-03-1​60-B8 Trafo

BALLUFF BES516-314V Induktive Schaltelemente

Data Display IF122-03 or HLD1036 Inverterbank

Mitsubishi FR-ZCZ or BD645B005G52 Board

BLUM P82.0151-72-2 Netzteil

Siemens 6ES7972-0BA11-0​XA0 PROFIBUSCONNECT​OR

Siemens 6ES5951-7LB13 Netzteil

Siemens 6ES5685-0UA11 PG 685

Siemens 6FX1192-3AA00 or MS122 Platine

Siemens 6FX1114-5AA00 or MS710 Platine

Siemens 6FX1113-4AD01 MS 300 Platine

SIEMENS MS 101 F OR MS101F PLATINE

Siemens 6FC3351-0EA-Z SINUMERIK RACK

Kloeckner Moeller PS4-401-MM1 Digital-Modul

Kloeckner Moeller LE4-116-XD1 Digital-Modul

Phoenix Contact IBS ST 24 BK-T InterBus

AEG ZAE201 Counter

AEG POS202 Positioner 2 Axis mit RS232C

Siemens 6ES5375-1LA15 Memory Submodule

Siemens 6ES5521-8MA22 Serial Interface

AEG ALU202 Modicon

Indramat IKO0982/000,25/​239183 Optical Cabel

INDRAMAT IKO0982/000,25/​239183/37/AE06/​0500 LWL-KABEL

EBM W2S130-AA03-01 LUEFTER

PAPST W2E142-B601-98 LUEFTER 7056ES

Siemens 6SE7015-0EP50-Z MASTERDRIVES MC

LENZE 1071 OPTION BOARD

SEW EURODRIVE MDS60A0550-503-​4-00 Umrichter

MTG-E8619-A3 DISPLAY

BERGER LAHR RDM5111/50 or RDM5111-50 SCHRITTMOTOR

Berger Lahr RDM51117/50 LNB Schrittmotor

Berger Lahr RDM51117-50 Schrittmotor

Michael Riedel RSTN1000 Trafo

Berger Lahr RDM51117/50 Schrittmotor

Berger Lahr RDM51117/50 or RDM51117-50 Motor

Berger Lahr RDM51117-50 Schrittmotor

Berger Lahr MP900 RS.04 or MP 900 RS. 04 Platine

Phoenix Contact IBS 24 DI/32 InterBus-S

Phoenix Contact IBS 24 DI/32 InterBus-S

Siemens 6ES5921-3UA12 Karte

Siemens 6ES5377-0AB21 RAM

Siemens C79195-A638-E60​0 Kabel

Siemens 6AB7080-0BA Formatter MK80/ TDC3350

Siemens ZBE 3974-MB/F-B25 mit E88420-A6511-L0​1 Computer

Siemens 6AC6971-0AB00 Tastatur DS075

Siemens 6AB7026-7AA or 101405-02-5 REV L FP-Laufwerk

Siemens 6AB7026-7AA or 101405-02-5 REV J1 FP-Laufwerk

HARTMANN&BRAUN 1341-111 PUNKTSCHREIBER ARUCOMP 6/5900

SIEMENS 6AB7080-7AB MK80 – LAUFWERK

EBM R2E180-AS77-05 Fan

SIEMENS PT88 S22761-A88-N1 DRUCKER

Siemens 6DS1001-8AA Teleperm-M

Siemens 6DS3303-8AA Tastatur alpha

Siemens 6DS3305-8AA Tastatur PBT-E

Siemens C79145-A3032-A2​2 Farbmonitor

Siemens 6DS3401-8BA Farbmonitor

Siemens DS075G or 6DS3421-1BA22-2​BA2 Datensichtstati​on

SIEMENS 3RX9307-0AA00 SIDAC-S 3RX93070AA00

Siemens 6DS3401-8BK Prozessmonitor

Siemens 6AC6936-0AA10-0​AA0 Sichtstation

Siemems BW/156/83/Roe Farbmonitor 51cm

Siemens 4AM5135-78A Trafo

MAY & CHRISTE DS06-74 TRAFO

Siemens 4EM4700-0CA Trafo

Ritz KSOH73-0 Niederspannungs​wandler

Bosch VM 100/R-TA 056881-118 MODUL

Siemens STEP5/MT or 6ES5998-0FC11 Handbuch Simatic S5

BOSCH NC-SPS MODUL

Bosch SE-D2020060-140​00 Servomotor

Indramat 28001 DROSSEL

Siemens 6ES5955-3LF12 Power Supply

Siemems AG S5-135U CPU928 Handbuch

Bosch 062633-304401 SERVO I

Bosch 068008-101401 SERVO I

Bosch MEM5 or 069103-101 EPROM MODUL

Bosch 062074-207401 Einschub CP2.5

Bosch 052910-306110 or PE2189/01 Netzteil PS200

Bosch CC320M or 062064-202 Rack

Bosch GG or 047268-107 Rack

Alpha getriebebau SP100-MF2-40-01​1 Antrieb

Alpha getriebebau SP75-M1-7 Antrieb

Bosch QUVF 100U/4P-11 or 701/3810467 Servomotor

Bosch SD-B5 250 030-04.000 Servomotor

Bosch SD-B5.250.030-0​0.000 Servomotor

Bosch QUVF 100U/4P-11 or 1070916017 Servomotor

Haidenhain EXE604C/5-F Digitizer Interpolater

Bosch SE-B2 020060-14000 Servomotor

BOSCH 046182-116 PANEL M.G.

AAD-1801-V1 BBC VERITRON UMRICHTER

Bosch S5/10-TC or 060839-102 Drive

Bosch VM100/R-T or 048107-317 Drive

Bosch SPM50-TB or 06253-106 Drive

Lenze 20A 600V Sicherungen

EMOD B…72 K4 3~MOTOR

SANYO I09S09I 100V 50/60HZ LUEFTER

Siemems 6ES5130-3WE61 Rack

. 50Z036-1-4836 Trafo

Fanuc A06B-6079-K001 or UT857CG FAN

Pikatron 49V307 Trafo NL1112

Bosch 056583-104401 Karte AG/NC3

Bosch 050560-407401 Output A24/0,5-e

Bosch 048485-206401 Output A24/2

Bosch 047961-105461 INPUT E24V

Bosch 056583-108401 Karte AG/NC3

Bosch 041523-112401 Karte AG/Z

Bosch 064837-105401 Karte M601

Bosch 062393-105401 Karte Z613

Bosch 063815-102401 Karte ZE612

Bosch 063804-103401 Karte ZE611

Bosch 048485-206401 Output A24/2

Bosch 047961-107401 INPUT E24V

Bosch SD-B5.250.030-1​0.000 Buerstenloser Servomotor

Siemems C98043-A1006-L2​-14 Board

Siemens 6ES5-377-0BB41 RAM 6ES5377-0BB41

SIEMEMS 6ES5511-5AA14 INTERFACE MODULE

SIEMENS 6QA2542-7AN17 mit T308N22TOF THYRISTOR

6EA1750-0AA00-0​AA0 Siemens PG 750

Siemens 6ES5460-4UA11 Simatic S5

OKUMA SXP-228A PLATINE

MITSUBISHI XPS-291A PLATINE

Mitsubishi SXP-232A PLATINE

Mitsubishi SXP-231A PLATINE

Mitsubishi XPS-229B PLATINE

Mitsubishi SXP230A PLATINE

HR HR-7805 TLF85686B Zeilentrafo

SIEMENS G85139-E1720-A8​61 STEUERPLATINE

Allen-Bradley 2711-T5A16L1 B B 4.41 PanelView 550

Bussmann 200A 1000V Sicherung

Mitsubishi AJ71UC24 Communication Module

Mitsubishi AY81 Output module

Eckelmann EI-QS 110 E Terminal

Fuji 6MBI100FC-060 Transistormodul​e

Siemens 6SE9213-6BA40 Micromaster

LENZE 7KC4-7-104H OR 7KC47104H GETRIEBEMOTOR

Siemems 6QG2542-7AN10 KW Staudinger

Emerson PCM-11 or 960158-02 sps

Siemens 6EV3055-0DC or 6EV 3055-0DC Netzteil

Siemens 6EV3055-0DC or 6EV 3055-0DC Netzteil

Fanuc A20B-2000-0170-​03B Board Rack

Sharp LQ104S1DG21 Display

Fanuc A16B-1200-0800/​10B BOARD

Orega DST 85 B 243 Zeilentrafo

BERGER LAHR D550 DRIVE D550

SIEMENS SIMATIC SINEC CP2433 or 6GK1243-3SA00

Siemens SMP16-CPU040 or 6AR1300-0JD20-0​AA0 Platine

Siemens 6AR1500-XXXXX-X​XXX RACK

SIEMENS SMP16-COM201OR 6AR1303-0ED-0AA​0 KARTE

SIEMENS SMP16-MEM040 OR 6AR1301-0DD10-0​AA0 KARTE

Siemens SPS SMP16-SV350 or 6AR1306-0HE00-0​AA0

Siemens SMP16-CPU040 Platine

Yaskawa UTMAH-B15ASB Encoder

Siemens 6FC9310-1MC00 Videokarta

BALLUFF BES 516-3019-S4-C SENSOR

ABB 76551 14010 Karte or ASP Karte

Murrelektronik 23017 SUPPRESSOR For MOTOR

Fanuc A06B-0758-B300#​3100 or 18S AC SPINDLE MOTOR

Siemens 6SN1146-1BB02-0​CA0 SIMODRIVE 611

Siemens 6SN1146-1BB02-0​CA0 SIMODRIVE 611

TLF8567B or 2C05C112 Zeilentrafo

Data TECHnology OS25-2000-50/5-​206 Encoder

Fanuc A06B-0319-B232#​7000 AC Servo Motor

Siemens 1FT5064-0CA01-2​-Z Servomotor

Siemens 1FT5064-0AF01-2​-Z Servomotor

Fanuc A06B-0318-B032#​7000 AC Servo Motor

YASKAWA CACR-SR03AC1ER SERVOPACK

YASKAWA SERVOPACK CACR-SRA5AC YASKAWA GA6000142

SIEMENS 6ES7322-1BF01-0​AA0 or 6ES7-322-1BF01-​0AA0

von SIEMENS PG730 6EA1730 TASTATUR C79458L2237B1

Siemens 1HU3056-0AC01-Z or 1-HU3056-0AC01-​Z Motor

NANOK NTM244X61C DISPLAY TLX-1741

Siemens 6SC6120-0FE01 Power Supply

Siemens 6SC6108-0SE02 Simodrive

SIEMENS 6SC6100-0NA21 PLATINE

Siemens 6SC6100-0GB12 or 6SC61000GB12 Power Supply

Sharp LQ10D367 Display

Siemens 6SE6400-0BP00-0​AA0 Micromaster 4

Siemens 6SC6100-0GC08 Power Supply

Siemens WF470 or 6FM1470-3BA20 Simatic S5

Okuma Typ F SN: 8000-41-243 Absolute Encoder

Okuma Typ F SN: 8000-39-264 Absolute Encoder

OKUMA E4809-032-473-A + E4809-032-474-A MAINCARD4-1-2

Okuma E0227-702-005 BUBBLE MEMORY CARD

Siemens 6FX1120-2CA01 or 6FX112042CA01 SINUMERIK

PILZ PST2 Relay

Siemens 6ES5951-7ND12 Power Supply

Siemens 6SC6100-0GC08 Power Supply

Siemens 6SC6500-ONA04 Simodrive

Siemens 6SC6508-0AA02 Simodrive

FANUC A03B-0819-C161 or A0R16G OUTPUT MODUL

SIEMENS 6ES5451-4UA13 SIMATIC S5

Siemens 6ES5430-4UA13 Simatic S5

Siemens 6ES5734-2BD20 Simatic S5 Kabel

KLASCHKA WIAS-2.40-3,6 or 16.14-35 Schutzschalter

SIEMENS 6EC1620-3A or 6EC1-620-3A MODUL

Sharp LMG7420PLFC-X Display

PHYWE PHYWE 11745.93 Impulsratenmess​er

Wieland Electric 70.320.1028.0 GEHAEUSE MIT INLETS

NEVA 55 Netzteil

PHYWE 07021.01 Tester Antik

Siemens 6ES5445-3AA12 Simatic S5

Turck N4-S12-AP6X Sensor

Siemens 6SC6101-2B-Z Simodrive

A40L-0001-0142A RESISTOR für Fanuc A06B-6055-H208

MC-FBC-224 or E58491 ZEILENTRAFO

TOSHIBA TLX-1551A-C3M DISPLAY

TR-R0715 OR PMF139-06C ZEILENTRAFO

NOKIA 104-47942 ZEILENTRAFO

DIEMEN HR46204 ZEILENTRAFO

OREGA 40332-16 ZEILENTRAFO

SIEMENS 6FC5111-0CA02-0​AA1 SIMATIC S5

SIEMENS 6SE6400-1PB00-0​AA0 PROFIBUS MODULE

FANUC A06B-6059-H218#​H519 AC SPINDLE SERVO UNIT

FANUC A06B-6059-H218#​H519 AC SPINDLE SERVO UNIT

FANUC A87L-0001-0018-​11 PC BOARD BMU256-4

FANUC A220B-0007-0090​-08E ADD.AXIS(P/C)

FANUC A16B-1200-0310-​02A GRAPH INT./PUNCH

FANUC A20B-0008-0430-​05A CRTC/PUNSCHER

FANUC A16B-1200-0150-​01A ROM

FANUC A16B-1000-0030-​02B MAINBOARD

FANUC A02B-0072-C204 CONNECTOR PANEL

FANUC A14B-0076-B001 INPUT UNIT

FANUC A02B-0094-C021 CRT/MDI UNIT

FANUC A06-6058-H192 DISCHARGE UNIT

FANUC A16B-1212-030-0​8A BOARD

FANUC A06B-6058-H025 SERVO AMPLIFIER

FANUC A06B-6058-H007 SERVO AMPLIFIER

FANUC A20B-1003-0230-​10C RACK

FANUC A16B-2200-0171-​07A SERIAL PORT


选择深圳长欣,选择放心,售后无忧大量现货,当天顺丰发货!
主营:本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。

先介绍几点经验。
1、先通读一遍“系统手册”(不管能不能看懂,先了解个大概,以便学习编程时查找);
2、由位控逻辑入手,逐渐增加定时、计数等条件,把或、与、非关系理顺;
3、进而练习整数运算、实数运算、类型转换;
4、量程转换、PID调节回路的建立及P、I、D参数的理解(最好是有个物理回路验证,比如变频器+电机+测速传感器);
5、循环、顺序、跳转等程序控制(尽量避免跳转,非跳不可时也是跳的越近越好);
6、中断、通讯、位置控制....

本人以ABB工业机器人配件DSQC系列和Motorola MVME系列,GE 卡件 模块 驱动器系列为主攻。各位电工朋友可根据自己的条件选择适合自己的PLC品牌,由于PLC的基本框架大同小异,学会一种至于其它的学习起来也就简单了。