描述
三、置位/复位指令型顺序控制系统设计法
1.步进阶梯设计图5a为用置位/复位指令设计的顺序控制系统步进阶梯。其设计依据也是图1所示的控制流程。该步进阶梯结构的特点是每步的辅助继电器都有一个置位线圈和一个复位线圈,二者编号相同。步1利用置位指令S使辅助继电器M1置位(即M1线圈得电后内部自锁),建立步1程序,并为步2提供步进条件信号。当步2的转步主令信号发出(X2闭合),指令S使M2置位,建立步2程序,同时复位指令R使M1复位,撤销步1程序。同理可画出后续各步继电器置位/复位梯形图。当最后一步完成并回到原位(X1闭合)时,指令R使M4复位,系统的工作循环结束。
2.输出阶梯设计图5b为输出阶梯结构,与图4b完全相同,不再赘述。
图5置位/复位指令型顺序控制电路
四、移位指令型顺序控制系统设计
1.步进阶梯设计设计依据如图6所示。图7a为按图6所示要求采用移位指令设计法设计的顺序控制系统步进阶梯,这种步进阶梯由一个8位移位寄存器(由移位指令定义辅助继电器M20~M27而成)作为控制元件。该移位寄存器中的IN为移位数据输入端,CP为移位脉冲输入端,R为复位端。这三个输入端的输入信号均为脉冲上升沿有效。对顺序控制系统来说,输入IN的信号必须是一个单脉冲信号,即移位数据为“1”。起动步1时,IN和CP同时输入按钮信号X0的脉冲上升沿后,在IN端生成的移位数据“1”便移入移位寄存器的M20位,此时该位有输出(即输出M20的常开触点闭合信号),建立步1程序,并为步2提供步进条件信号;M20的常闭触点即时断开IN输入端和CP的步1输入端,完成数据“1”输入和移位脉冲输入。从步2起,本步的转步主令信号一发出(X2接通),便输入一个移位脉冲上升沿,使原来移入M20位的数据“1”移入M21位,建立步2程序,并为步3提供步进条件信号。移位后,M20位的状态变为0,即其相应的步1被撤销,输出为0。依此类推便可实现整个步进阶梯逐步得电和逐步失电。最后一步完成并回到原位(X1接通)时,接通移位寄存器的复位端R,使移位寄存器复位清零,整个控制系统失电停止。
欧美品牌停产的,常用的“PLC”备品备件
我司产品应用于以下领域:
1,《发电厂DCS监控系统》
2,《智能平钢化炉系统制造》
3,《PLC可编程输送控制系统》
4,《DCS集散控制系统》
5,《智能型消防供水控制系统》
6,《化工厂药液恒流量计算机控制系统》
7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列
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SMC SOLENOID SY3120-6LZD-C4(LOT OF 3)
NEMA 34 Planetary Gearhead 518-43-010 Minarik Drives
Panasonic Servo Drive&Motor Set MUDS041A1A
Agilent HP 84000-60189 3.5mm Test Port Cable
SEALEVEL PCI RS-232 RS-422 RS-485 Interface 7202 rev C
OMRON VISION MATE CONTROLLER F350 F350-C10 F300-A20
Olympus WHSZ10X-H/22 Eyepieces
GE Fanuc S2K Servo Drive&MTR-3N31 Servo Motor Set
Interface PCI expansion interface module PCI-2724C 2724
PANTHER H12 Intelligent Motion System IMS
Agilent 11683A RANGE CALIBRATOR WITH OPTION H01
Delta Tau Data Systems PMAC-PC 602705-107 CPU+ram
NAIS M1T MICRO CONTROL UNIT PLC
Soder-Wick 50-4 25ft SIZE#4 QTY=5
Delta Tau Data Systems PMAC Lite 602402-105 602192-103
Delta Tau Data Systems Universal PMAC Lite 602402-105
Coherent FieldMaster Field Master Power Energy Meter
OMEGA DP25-S STRAIN GAUGE METER
FOculus FO442SB IEEE 1394 Digital CCD Firewire Camera
OPTEM 18-108 f/2.5 close 34-11-10 MACRO VIDEO ZOOM LENS
IDEC POWER SUPPLY PS5R-D24 PS5RD24 24VDC 2.1A Qty:3
OPTO 22 SNAP-PS5-24DC SNAP-PS5 SNAP I/O 5V 4Amp QTY:2
QUANTRONIX QS27-4SN-QX1 LIGHTWRITER SPE Q-SWITCH
National Instruments NI PXI-6031E DAQ Board
Agilent 08485-60005 3.5mm(f)-N(m)Adapter 50 MHz
MATROX Meteor II Multi-Channel METEOR2-MC/4
Agilent HP 8765B Coaxial Switch DC-20GHz with Opt 024
Agilent HP 87300C Coaxial Directional Coupler 1-26.5GHz
HP NC364T Quad Port Gigabit Server Adapter 436431-001
PIXERA 001226-001 Rev F PCI CARD
MATROX Meteor II Multi-Channel METEOR2-MC/4
MATROX Meteor II Multi-Channel METEOR2-MC/4/16F
PARKER COMPUMOTOR SX8 MICROSTEP DRIVE/INDEXER
MATROX METEOR2 CL/32 METEOR Camera Link Frame Grabber
TOTAL CONTROL QPI21100E2P QUICKPANEL 9″TOUCHSCREEN
Magnum ISA Bench Card 000-878004 050-878004 000-868704
Dell Latitude D410 Motherboard&1.6Ghz CPU G8336
Lot of 2 Gore ReadyFlex Microwave Cable Assemblie 18GHz
HUBER-SUHNER SUCOFLEX 104A 8120-4921 Cable 26.5GHz NEW
EDC BIOSYSTEMS LIQUID HANDLING PROCESS CONTROLLER PANEL
TRILLIUM HAND HELD CONTROLLER OT-30 PART#874-5242-01
HP Agilent 1NB7-8539
Agilent HP 08487-60001 2.4mm(f)-N(m)Adapter 50MHz
Agilent 5065-7021
Agilent HP E3614A 0-8VDC 6A DC Power Supply
Agilent 5065-6980
Agilent HP 10498-60001 10498A 8 CH Probe Lead Set
Lot of 3 TAKEX Fiber Optic Sensor FR2-Slim Type
KDI 64537 PQ-1846 Microwave RF Directional Coupler
HP Agilent 1NB7-8539
MITSUBISHI A1SJ71UC24-R2 RS-232-C UNIT NEW
MITSUBISHI A1SY41 OUTPUT MODULE NEW
YAMATAKE HONEYWELL MX100PT12 32PT TRANSISTOR OUT
Allen Bradley 1762-IQ8 MicroLogix DC Input Module QTY=2
Mitsubishi FX2N-80MR-ES/UL FX2N80MRESUL PLC
HITACHI KP-D50 DIGITAL COLOR CAMERA
JVC.TK-C1481BEG.LO-LUX CCTV COLOUR CAMERA
AVME-311AF AVME 311AF FUJI K2056D
Yamatake Honeywell MX250RV01 VME Interface Board
Texas Instruments 435 Complete PLC
Keyence LS-3101 Laser Scan Micrometer+Scanning Heads
COGNEX VISION SYTEM IN-SIGHT-3400 CAMERA MODULE
FUJI FH1016A VM1440A SIX CHANNEL COMMUNICATION BOARD
FUJI AVAL VME-520 MCIF-16 BOARD CARD
HITACHI ZOSEN HIMV-923A/924A HIMV-924A2 WITH 2M FLASH
Adept Technology 10332-12410 MI-6 VME BOARD STAUBLI
RKC FAREX SRM SR Mini HG SYSTEM
WYKO PCB 619-152 PCI Card
COGNEX 4400 VM13B REV T VISION PROCESSOR MODULE
GE FANUC 90-30 PLC 5 SLOT SYSTEM Stepper Motor
Agilent 20mm Torque Wrench 8710-1764
COGNEX CHECKER 101 807-0007-2 REV A VISION CAMERA
Lot of 2 CrystalFontz 634 CFA-634 LCD Dispaly
National Instruments NI GPIB PCIe PCIe-GPIB
AMD Turion 64 X 2 TL52 1,6 Ghz TMDTL52HAXSCT
Micro-Coax 26GHZ 84 inch Flexible Microwave Cable
NARDA POWER DIVIDER 4456-2 FROM 2.0 to 18 GHz
STORM TRUE BLUE 205 18GHZ 72 inch Flexible CABLE
Galil Motion Controls DB 1004 DAUGHTER BOARD Rev-C
Galil 6-AXIS Motion Controller DMC-1060 DMC1060 Rev G
BERKELEY PROCESS CONTROL BX I/O WITH INPUT&OUTPUT
Agilent 1250-1529 Adapter Type-N(f)to Type-N(f)75
KEYENCE KV-24DR PLC with KV-U2 POWER SUPPLY
Agilent 1250-1476 Adapter Type-N(m)to BNC(f)NEW
HP 44727A 4 Ch Voltage/Current DAC
HP 44705A 20 CHANNEL RELAY MULTIPLEXER
Sorensen DCS80-13E DC Programmable Power Supply
SUNX S link SL-T8J,SL-T16C1 and SL-TP16C1
CORECO PC-CAMLINK PCI UNIQ UP-2000CL CCD DIGITAL CAMERA
JSR Ultrasonics RP-U2 SONIX ECHO remote pulser
NAVITAR 6000 60095 Lens 1-60095 High Mag Zoom
LiNOS 4401-256-000-20 1064nm 2-8X Laser Beam Expander
QUANTRONIX LASER HEAD PUMP CHAMBER
QUANTRONIX 0201-03199 Cavity Assembly
QUANTRONIX SHUTTER Assembly 319 0103-00483 REV G NEW
Cognex In-Sight 5400 Smart Cameras With Cable
Vision Control PSO 90-100/125 deflectors 90 degrees