在PLC发展的初期，沿用了设计继电器电路图的方法来设计梯形图程序，即在已有的些典型梯形图的基础上，根据被控对象对控制的要求，不断地修改和完善梯形图。有时需要多次反复地调试和修改梯形图，不断地增加中间编程元件和触点，才能得到一个较为满意的结果。这种方法没有普遍的规律可以遵循，设计所用的时间、设计的质量与编程者的经验有很大的关系，所以有人把这种设计方法称为经验设计法。它可以用于逻辑关系较简单的梯形图程序设计。 用经验设计法设计PLC程序时大致可以按下面几步来进行：分析控制要求、选择控制原则；设计主令元件和检测元件，确定输入输出设备；设计执行元件的控制程序；检查修改和完善程序。 产品广泛应用领域： ●电力行业 ●电力-电厂输煤程控系统 ●电力-电气化水系统 ●电力-除灰除渣系统 ●化工-盐化厂 ●冶金-炼铁高炉系统 ●水利-水电厂监控系统 ●汽车制造行业 ●钢铁及锅炉行业 ●供水及水处理行业 ●造纸及印刷行业 ●玻璃生产及加工行业 ●电站及小水电控制行业 ●水泥制品及生产制造行业 ●铁路运输装卸行业 ●我们售出的产品都经过的测试和，且质保一年，15天内包退换，满意后付款!!! ●我们的宗旨是：“用服务与真诚来换取你的信任与支持， ●互惠互利，共创双赢！我公司愿与国内外各界同仁志士 ●竭诚合作，共创未来！ ABB ASEA-CN-CN DSAV-111 DSAV111 NEW ABB Inverter ACS550-01-015A-4 (ACSA4) NIB ABB 3HAB 2214-1/1 DSQC 315 Module Combination I/O ABB 3HAB 2214-1/2 DSQC 315 Module Combination I/O ABB #DSQC-328-3HAB-7229-1 P/C I/O Board 7/3 ABB ACS 500 Variable Freq Drive, 25 hp with cabinet ABB 1200A MOLDED CASE SWITCH NEW Abb PC POWER SUPPLY BOARD NPOW42-62c NPOW42 ABB 3E031810 OUTPUT BOARD NEW 3E 031810 ABB DCS500B SDCS-FEX-32 Board ABB NI0C-01 board for ACS600 drives PN NIOC01, N10C01 ABB ACH550-PDR-04A1-4 3PH 380V 100kA 2HP HVAC ABB Analog Input IMFEC11 *NEW IN BOX #11150 ABB TBI BAILEY TB417 CONVENTIONAL CONDUCTIVITY TRANSMIT ABB 3HAC3619-1 X2 Axis Computer Card / ABB ACS601-0011-2-S00B12VAC 7.5HP * NIB ABB MSOC/474M MICROSHIELD O/C TAYLOR ABB MOD 300 BCKUP MEM MODULE 6014BZ10100 TAYLOR ABB MOD 300 FIELD BUS MODULE 6227BZ10200 New ABB ABB800 APBU-44C Controller Board ASEA Brown Boveri, ABB DSMB 125 ASEA Brown Boveri, ABB DSMB 125 ASEA Brown Boveri, ABB YTEA 250 -8 ABB YB560101-SV PC Board Monitor #22989 ABB Fischer & Porter Sight Flow Indicator 10E15722HV New ABB Rectifier 3HAA 3563-AHA/2 #29370 ABB Capacitor C485D40-2LF, 40.0 KVAR #28615 NEW ABB Capacitor C485D40-2LF, 40.0 KVAR #28603 ABB/RANSBURG HV CONTROLLER RDH 611 ABB YB560103 BE/2 DSQC 224 PCB NEW / 1 YEAR WARRANTY ABB YB-560-103-BE/2 DSQC 224 PC BOARD ABB 3HAA-3563 ALA/2 DSQC 252 PC BOARD ABB Disconnect Switch, OETL-NF600ASW, 800A, 690V, New ALLEN BRADLEY 1326AB-B410G-21-L USPP 1326ABB410G21L NEW ABB STROMBERG SAFT-163-I0C SAFT163I0C PC BOARD ABB EHN250C-1 NEW NEMA SIZE 5 3-POLE CONTACTOR ABB DCS500 SDCS-PIN-11BB Power Board ABB ACS201-4P1-3-00-10 AC DRIVE ABB ACS 200 ABB 3HAC24241 NEW CONTROL BOARD 3HAC2424-1 ABB Photo Amplifier Board Ulma 2020 Stromberg ABB Drive Control Board M# ~NIB SEALED~ ABB Breaker 480V 480 V Type ES ESB43175L 175A 175 A NIB ABB DSQC-236G YB560103-CD/22 DRIVE BOARD DSQC236G ABB MODEL PCU-03 PURGE CONTROL BOARD PCU03 NEW ABB Inverter ACS550-01-015A-4 ( ACSA4 ) ABB Asea Brown Boveri V032 Motor Controller Drive V032 ABB Inverter ACS355-03E-15A6-4 (ACS35503E15A64) NIB ABB 53MC5412A25BACXDXCXX Controller 53MC5 ABB/Raymond Vacuum-Type Sand Media Blast System A2CPCA ALLEN BRADLEY 1326AB-B430E-21 USPP 1326ABB430E21 ABB Lighting Contactor 250A A210-30 Allen Bradley 1326AB-B720EABB720E21 NEW ABB A260-30-11-84 Contactor (STR1354) ABB Robotics Axis Board DSQC236T YB560103-CE/23 ABB Contactor, AF300-30, AF300-30-22-70 New in Box ABB NIB #A300-30-11-51 IEC 300A 3P 480V CONTACTOR ABB MODEL DSQC129 YB161102-BV/1 CONVERTER CARD NEW ABB Robot Teach Pendant S3 - 3HAB 2136 - 1/6 MODICON / ABB COMPACT 984 PLC TRAINING UNIT ABB Power Distribution Relay CA 290BB93A09 ABB TB82PH2010020 pH / ORP / pION TRANSMITTTER ABB SERVO DRIVE ACS501-002-4-00P2 ABB S5H ISOMAX Circuit Breaker 400amp E93565 SACES5 ABB, ABB Robot, DSQC 328, 3HAB 7229-1, S4C, S4C+ ABB SR-369 S6N 600A 600V CIRCUIT BREAKER MH527509 ABB Drive Controller Board DSQC 236T ABB Chopper Control Board ABB 7.5kW Inverter Driver ACS Free Ship ABB SADT304100R0003 SG ABB MagMaster MM/GEG01003L000E ABB DSQC 236G YB560103-CD/22 AXIS DRIVE BOARD ABB DSQC 236G YB560103-CD/24 AXIS DRIVE BOARD ABB DSQC 236G YB560103-CD/22 AXIS DRIVE BOARD ABB DSQC 236T YB560103-CE/23 AXIS DRIVE BOARD ABB DSQC 236T YB560103-CE/23 AXIS DRIVE BOARD ABB ACH Adjustable Frequency AC Drive ABB SKT-2 Stromberg serial # 269950 ABB DSQC 3HAA3563-AGA/2 Rectifier Module ABB Variable frequency Drive 10 HP ACS501-010-4-00P2 ABB Kent-Taylor Fulscope ER/C Chart Recorder Ref ABB Board Card-DB-DB DSBC-170 ABB ACS 600 NEW OLD STOCK ABB MODEL TB84 pH/ORP/pION TRANSMITTER CONTROL UNIT NNB ABBd DDCS Branching Unit NDBU-95 ABB GDR Power Supply NGPS-11 MD Kit 6143601 ABB MODEL APSAF-03 SAFETY BOARD 3E-032085 APSAF03 NEW ABB A145-30-11-84 CONTACTOR AEA ABB P-HC-BRC-PBA20000 Symphony Processor Bus Adapter ABB AC-Drive ACS311-4P1-3, Fast shipping ABB Contactor, AE, OEM NIB ABB 3 POLE T5N BREAKER 400A 400 amp sace TMAX PR211ds NEW ABB PRESSURE TRANSMITTER 264H 2600T CARRIER 24ABB336A310 3 TON SS AIR CONDITIONER R-410A ABB EH 450 Contactor EH 450C-*L working ABB Breaker T5S630 PR221DS-LSI R630 FF 3P NIB ABB Commander 1900 1901JA001100000STD Recorder Ref ABB Inverter ACS550-01-012A-4 (ACS55001012A4) NIB ABB WeldingIsolation Contactor # EHW-250W - Size W5 ABB Contactor EHW250C2P-1L EHW250C2P1L New !!! ABB CONTROL CABLE 3HAB 6453-1 3HAB6454-1 REV .03 NEW ABB SENSOR CONTROL OPTIMASTER ART 1100-1000-AH ABB EK370C4P-1L new in b0x ABB 10DS3111AEE18P1A2DA1138X 8" FLOW TUBE ,NEW ABB 50 HP AC VFD DRIVE ACH501-050-4-00P2 460 VOLT ABB DCS500 SDCS-FEX-2 Board ABB Board 3BSK 980 006 R109 ABB Asea Brown Boveri 15hp ACH501-015-4-00p2 440-500v ABB 10 HP AC VFD DRIVE ACS4 VOLT NEMA 4x ABB Q3E 032086 APSAF-03 APSAF-03-EXC ROBOT SAFETY BOARD ABB KENT TAYLOR SMART PRESSURE TRANSMITTER 621DA343A717 NEW FIT ABB/ASEA REPLACEMENT CONTACT KITS KZ1200 EH1200 ABB CIRCUIT BREAKER 1600 AMP SACE E2N-1A NEW ABB SACE S6 S6N 600 AMP CIRCUIT BREAKER FITS ABB REVERSING CONTACTOR 120V COIL REV-EH145-120V ABB EHDB 280 EHDB280C2P-1L 280A DC 120V coil * NEW ABB / MicroMod MOD 30ML 1800RZ21100A w/ Software ABB M706480 #7497 POWER SUPPLY 1400 AMP NEW ? N/R ABB EH-450 Contactor 120VAC Coil EH450C-1 NEW TAYLOR ABB MOD 300 BACKUP MEM MOD 6014BZ10000 NICE ABB M91 ELMO SERVO MOTOR IRB2000 AXIS 2 4429584-BW ABB ACS601-B1200801 AC DRIVE ABB DCS Freelance2000 DAI 04 DAI04 ABB 264C900A05/CO8HILO OVERCURRENT RELAY ABB Inverter card OINT4420C ABB DSQC 249B Capacitor Board; P/N: 3HAA3563-4HA/2 ABB 3243501 B COMMUNICATION BOARD ABB 264C897A05/CO5HILO OVERCURRENT RELAY ABB 264C900A07/CO8HILO OVERCURRENT RELAY ABB 264C901A03/CO9HILO OVERCURRENT RELAY TAYLOR ABB MOD 300 D/F MODULE 6005BZ10000 ASEA Brown Boveri, ABB DSQC 123B with DSQC 130 ASEA Brown Boveri, ABB DSSR 115 ASEA Brown Boveri, ABB YYE 109 A TAYLOR ABB MOD 300 PROC. POWER SUPPLY 6020NZ10700 ABB TB84EC Conductivity Analyzer TB84EC2000300 FITS ABB REVERSING CONTACTOR 120V COIL REV-EH100-120V ABB ASEA BROWN BOVERI DSQC-230, tested warranty ABB MOTOR DRIVE ACS501-010-4-00P2 ALLEN BRADLEY 1326AB-B520EABB520E21 SERVO MOTOR ABB / MOD 300 Graphics Converter, 120VAC, PN -GC315AB/A ABB / MOD 300 Graphics Converter, 220VAC, PN -GC315AB/B ABB ELMO 3HAB4041-1 SERVO MOTOR 3HAB40411 NIB ABB ACH550-VDR-03A3-4+F267 1.5 HP 480V DRIVE ABB SVC401A DSQC 239 2668 165-14/3 I/O Board Asea ABB IRB 2000 Mechanical Robot ABB M33A 090 LB-2 MOTOR NEW M33A090LB2 ABB EHW 160W EHW160W MAX RATING 600VAC 300AMP SIZE W4 ABB DRIVE UNIT GT 3HAB8101-8 ABB OETL-NF 400 disconnect, 400 amp w/subpanel & terms ABB 57087234 PWD86 Allen Bradley Stromberg 200297 ABB DSQC328 3HAB 7229-1 ROBOT SERVO REMOTE I/O ABB ACS401601115 AC DRIVE 7.5HP N-D Nema 12 230VAC ABB Circuit Breaker AH series 100A 3P 600V 24VDC shunt ABB Motor, ABB robot, ABB, Siemens Motor ALLEN BRADLEY 1326AB-B420H-21-TJB NSPP 1326ABB420H21TJB ABB SACE S800N Circuit Breaker 3P 800A 600V LI NEW ABB 2600T Series Pressure Transmitter 264DRSHRRRA1 ABB Inverter ACS550-01-012A-4 ( ACS55001012A4 ) ABB TA25DU SERIES THERMAL OVERLOAD RELAYS (15) 3HAA0001-ADY/1 ABB ROBOTICS 3HAA-0001-YR ABB ROBOTICS AXIS 5 CABLE ABB 3 Phase Motor IP54 FREE SHIPPING ABB 3 Phase Motor IP54 FREE SHIPPING ABB Drive ACS355-03E-12A5-4 (ACS35503E12A54) NIB ABB Transfer Switch NF2001-3TB4A 200A NF N-1 3P (NIB) ABB CIRCUIT BREAKER 3P 400 AMP 600V SACE S5N ABB VO42 FLOW ECONOMIZER MOTOR DRIVE SPEED CONTROL BOX ABB DSQC 236B Drive Unit YB560103-CB ABB DSQC 236C Drive Unit YB560103-CC ABB DSQC 346G Drive Unit 3HAB 8101-8 ABB PS S85/147-500F Softstarter ABB ACS500 AC MOTOR DRIVE 15HP CONSTANT TORQUE 3 PHASE ABB ACS 300 ABB DSMC110 57330001-N/2 FLOPPY DISC CONTROL MODULE NEW ABB MODEL OESA250DV12PL1 SWITCH FUSE 250A NEW ABB ACS501-002-4-00P2 3hp 7hp VFD drive motor control ABB S3 TEACH PENDANT 3HAB-2136-1/3 *WORKING Allen Bradley AC Servo Motor 1326ABB515E21K5 2.44kw ABB, ABB Robot, DSQC , 3HAC 14506-1, 3HAB 4259-1, S4C ABB E32767 PURGING CONTROL BOARD E-32767 ABB YB161102-AK / DSPA110 SLAVE COMPUTER CARD NEW ABB YB 161 102-BU TERMINAL BOARD NEW ABB GFMITS-3 Control Unit 24VDC #6306 ABB VARIABLE FREQUENCY DRIVE ACH401B01635+BODE0000 ABB, ABB Robot, 3HAC 9534-1, 3HAB 6597-1 ABB 61258523H GDR POWER SUPPLY NGPS-11 *NEW* ABB, ABB Robot, DSQC 346G, 3HAB 8101-8, ABB Servo Drive ABB S4C servo drive, ABB S4C+ servo drive ABB, ABB Robot, DSQC 504, 3HAC 5689-1, S4C, S4C+ ABB 150 Amp Circuit Breaker ABB SK824084-AF CONTACTOR EHDB130-20-11 ABB EHW250WC2P-1L11 EHW 250W size w5 Contactor NEW ABB GME PC Board DSQC 236G YB560103-CD/24 56M009G

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