PLC的用户程序是设计人员根据控制系统的工艺控制要求，通过PLC编程语言的编制设计的。根据国际电工委员会制定的工业控制编程语言标准（IEC1131-3）。PLC的编程语言包括以下五种：梯形图语言（LD）、指令表语言（IL）、功能模块图语言（FBD）、顺序功能流程图语言（SFC）及结构化文本语言（ST）。
（3）尽可能采用常开触点形式连接到输入端，使编制的梯形图与继电器原理图一致，便于阅读。
3.4.3循泵运行与冷却水压力保护的控制逻辑改进
必须指出，并不是所有的PLC都有上述全部功能，有些小型PLC只有上述的部分功能，但是价格较低。
程序：PLC指令的有序集合，PLC运行它，可进行相应的工作，当然，这里的程序是指PLC的用户程序。用户程序一般由用户设计，PLC的厂家或代销商不提供。用语句表达的程序不大直观，可读性差，特别是较复杂的程序，更难读，所以多数程序用梯形图表达。
+QQ 1273632994
本公司有大量库存现货，全新原装，欢迎订购，当天可发货！
联系人：李涛（销售一部经理）
电话：0591-22983782
手机：13696852881
传真：0591-22989937
邮箱：1273632994@qq.com
1/2 IN NPT PNEUMATIC STAINLESS THREADED 1000WOG BALL VA
AMAT 0040-75705 Bracket, OCR, Oriental Controller
PCB board 70906001 wire wrapped board with adapter
SIEMENS LOGO POWER 6EP1332-1SH43 6EP13321SH43
Siemens Sirius 3R 3RT1016-1AK62 Contactor
NORTEL RLSE 05 DUAL DTI/PRI CARD NT5D12AB
AMAT 0200-40992, Cover Plate, SI 200mm, E-Chuck
TURCK BS 4151-0/13.5 6904716 MINI MALE 5-PIN ConNECTOR QUANTITY! NIB!!
UNITED ABRASIVES 24050 1-BF STUD KING 14X3/32IN 1IN ARB
ASCO 35-206-1 120V-DC SOLENOID VALVE COIL D406527
SQUARE D FAL34015 3P 15A AMP 480V-AC MOLDED CASE CIRCUI
WAUKESHA 20240 VALVE SEAT 1-1/8IN ID 1-3/4IN OD REPLACEMENT PART D274679
TU560 B&R DI476 3DI476.6 Rev.C0
PARKER 01.50 2ANT1414AC 1.500 1-1/2IN 1-1/2IN PNEUMATIC
GENERAL ELECTRIC GE 19D404786G1 REV A PROTECTIVE UNIT D
AMAT 0020-24215 Rev. A Top Cover
IDEC PS5R-E24, 100W Power Supply
PNEUMATIC SCALE 676208 COMPRESSION SPRING 2-1/8 IN D432721
Siemens 560-2126B Peripheral RCC Board
FANUC LTD P00070 TEACH PENDANT A05B-2301-C192
Asyst 3200-4296-02 PCB Board, FAB 3000-4296-02, ETON ET866, 9701-2084-04, 330035
BRAD HARRISON 105001C01F120 12FT 5 PIN FEMALE MINI-CHANGE CORDSET NEW!!
WESTINGHOUSE CO9-D011AA1 391B691A07 OVERCURRENT RELAY D520408
PARKER 32-UPGRADE ORIGA 32MM BORE 635MM STROKE CYLI
TOGAMI-ELECTRIC NFB-100 3P 100A AMP 220/550V-AC NO-FUSE CIRCUIT BREAKER D495839
STOCK EQUIPMENT C15289-1 A22430 REV A OPERATOR INTERFACE PANEL D464792
ON327 Schleicher PDVS 104-1
RELIANCE 725098-NG 3/4HP 180V-DC 1750RPM W56HC ELECTRIC
7501-0021 6301-0021 CPU REV E PCB CIRCUIT BOARD MODULE D523511
6 AMAT 0021-35991 RF Insulator TXZ Lid
OMRON INT01, 0D507-18P, INPUT UNIT, 24 VDC
SEW Eurodrive AUSGANGS OUTPUT FILTER HF015-503 Nr 8260303
United Electric Controls 12SHSN9C, UE 12SHSN9C SRNSOR WITH HYETT DIAPHRAM, NEW
DODGE NON EXPANSION PILLOW BLOCK BEARING TYPE K/DI 056048
LAM 500035389 Electrode, One piece, Ground
TOTALINE P502-8415S REFRIGERANT FILTER DRIER D46000TOTALINE P502-8415S REFRIGERANT FILTER DRIER D460003
WESTINGHOUSE PRL1 YS2048R7100A MAIN BOARD 100A 120V DIS
ECOLAB 8501-5400 50FT LENGTH 5/8IN OD 3/8IN ID NYLO
VIATRAN 25CT7BAB5715ANSYK STAINLESS 0-150PSI 10-42V-DC TRANSDUCER D355293
THOMAS 82016G120 120V-AC 8/16V-AC 7VA 1PH TRANSFORMER D
DG453 Siemens Sivacon Abgangskasten 8PS BD2-AK2X/S18 Neu
YALE FLG 3TON CHAIN OPERATED TROLLEY D517276
FAIRCHILD 30233 PRESSURE 0.5-30PSI 250PSI 3/8 IN NPT PNEUMATIC REGULATOR D470462
20 Motorola 5646050-101 Motorola SRF5347H Transistor 402380
NEW DISCO ES MODPH05652A ELE .3 MICRON AIR FILTER 401712
SYSTEM ITALY INDEXER 1002962201 ROTOCOLOR S5
Philips 523-000030-05 eW Graze Powercore Medium Beam Slightly Used w Fac. Box
ALLEN BRADLEY 24VDC RELAY 700-HR32Z24-4 SER. A W/ base LOT OF 10
MKS BARATRON 122AA-00010BB PRESSURE TRANSDUCER TYPE 122A, 10 TORR RANGE, 399659
TSUBAKI C2040 RFC2040S 100FT SINGLE STRAND ROLLER CHAIN D508802
SQUARE D C31102-085-50 300:5A AMP CURRENT TRANSFORMER D501354
MILLTRonICS RMA-2 REMOTE MOUNTED PRE-AMPLIFIER 24V-
Thermal Expansion Valves (1)
PARKER CCJ137B01 120V-AC 3/8 IN NPT SOLENOID VALVE D521048
ON452 SEW Feldverteiler MQP32D/MM03D-503-00/Z28F MM03D-503-00 0,37KW
WESTINGHOUSE HMCP030H1C SER C 3P 30A 600V-AC MOLDED CASE CIRCUIT BREAKER D521934
ISI AUTOMATION SC64 A 0 90 D S3 3 11/16 POWER CLAMP PNEUMATIC GRIPPER D482991
AMAT 0020-13052 TOP COVER, GAS BOX LEFT, CHAMBER IN POS, 400461
NEW SETRA 207120-05 SYSTEMS C207, 0-100 PSIG, 24 VDC, C280E
ROTORK 90A 21RPM 460V-AC 3PH 2P ELECTRIC ACTUATOR MOTOR D513479
Dataradio Gemini G3 Parallel Decode G3-700 GPD36075-1050A
BROWNING CAST IRON V-BELT SHEAVE, AK61 *NEW*
NEW AMAT 0240-89075 Kit, temp cal rotation lock, 0240-89452 and mounting screw
TRI CLOVER 9611414120 SEAL RING BUTTERFLY VALVE 4IN
WESTINGHOUSE S-861701 COIL D512024
MILLER FLUID POWER A53B2B 7IN STROKE 2IN BORE PNEUMATIC CYLINDER D378871
SMC NVZ2150-5G-01T 24V-DC 1/8 IN NPT SOLENOID VALVE ASS
NUMATICS R32R-04 FLEXIBLOK 1/2 IN NPT PNEUMATIC REGULATOR D523175
HT59 Messumformer W4 Siemens Teleperm 7NG1204-4AD35-5RF5 PT100
ROSEMOUNT 3051L3AA0FD21AAC6 10.5-42.4V 0-1000IN-H2O TRA
SKF ASSORTED 20004 470380 TIMKEN OIL SEAL D36
AMAT 0140-35788 Rev. P1 KTC, Harness Chamber AxZ Interlock. 415876
INFICON IPC400 Model # 922-602-G1
SIEMENS 3VU1300-1TE00 3VU13001TE00 MOTOR STARTER PROTECTOR
Harting HAN-K4/2M Male Connector w Walther 57696 Enclosure
BOWER ROLLER BEARING 94649 CONE NIB
Asyst technologies 3200-4346-02 TRI-RGB LED display PCB assy
BRUSH BS88:4 NEW! QUANTITY! 660VAC 32ET 35ET 45ET SEMIConDUCTOR FUSE
WINPAK 323063 10-1/2X1-9/16IN STAINLESS GEARBOX SHA
910723103902 MC D-0 2-1/8IN BORE STEEL HELICAL SPUR GEAR D358435
ROSEMOUNT 8800A F060SA1N1P1I5 SMART VORTEX STAINLESS 6IN 150 FLOW METER D494734
SIEMENS S30810-Q2224-X-10 MTSCG PCB CIRCUIT BOARD MODULE D524044
DG282 Stromag Stromatic AEC 025.2 AC-Servo 7501456
TOSHIBA AR166U-B ConTROL RELAY 115-120V-AC D522896
ELTE PE0 8/2 SPINDLE 0.35KW 380V-AC 18000RPM AC ELECTRIC MOTOR D449239
AMAT 0050-03729 LINE, RP EXH W/GATevalVE CHAM. B
Schroff QR06A-2EM.38.AB, AMAT 0020-91236 Fan, Tangential (MOD) Old Control Modu
POWELL 515 3 IN 150 STAINLESS FLANGED WEDGE GATE VALVE D481073
SANYO DENKI T511B-012EL8 SANMOTION SERVO MOTOR, NEW
OMRON SYSMAC C1000H PROGRAMMABLE ConTROLLER C1000H-CPU01-EV1
NEW AMAT 0100-76109 PCB assembly Status display, MF controller, Schem 0130-76109
GE FANUC IC693CHS391G 10-SLOT base
US MOTORS A885A UNIMOUNT 1.5HP 208-230/460V-AC 1160RPM 182T 3PH MOTOR D503408
FEDERAL SIGNAL 450 VIBRATORY ELECTRIC HORN 250V-DC D518786
WESTINGHOUSE 4256A25G02 PCB CIRCUIT BOARD D467088
WIX 33109 FUEL FILTER D455726
PP374 Phoenix Contact Trio Power Trio-PS/1AC/24DC/5 2866310
VIDEOJET 349825-B 343605 PCB CIRCUIT BOARD D503970
BUCKINGHAM 6212 PIPE THREAD RESTORER 6-12 IN OD D515416
AMAT 0150-00463 CABLE ASSY., DNET I/O DRAWER NTWK POWER, Network, Assembly
NEW AMAT 0200-20138 6" QUARTZ INSULATOR SMRMF PCII @ A 401766
BECKHOFF CU2008 CU2008-0000 ETHERNET SWITCH ! NEW !
ABB IOS-01 BOARD, ABB ROBOTICS I/O BOARD IOS-01 E-31701
SIEMENS LOW CAPACITY WATER CHLORINATOR SYSTEM W3T97930 NNB
LAM 810-015987-003 TCP autotune PCB board assy
SULZER BURCKHARDT 12.3BAR 1/2 IN NPT BRASS THREADED RELIEF VALVE D512404
REDUCER D427679
GOODYEAR 2326V310 49 DODGE 31 IN 1-7/16 IN V-BELT D
WESTINGHOUSE 1803425 15KVA 1PH 240/480V-AC 120/240V-AC
VIDEOJET 215998 POWER SUPPLY PCB CIRCUIT BOARD D503
TU465 Lenze 767 7066 7066G
WESTAFALIA 0007-2923-760 GASKET D462921WESTAFALIA 0007-2923-760 GASKET D462921
RITTAL SK3110 (LOT OF 2) THERMOSTATS
AMAT 0010-01191 Assembly, Air flow, MMF, pressure switch, Applied materials
Parker SU135-0627-Z03, M105-04-ATZF03, B55-02-MZF03
MICHAEL RIEDEL: RNTU72S POWER SUPPLY 24V
IMC BOXER NMB 4715FS-12T-B50 FAN 115V 50/60 HZ w/ Warranty
CINCINNATI MILACRON * CIRCUIT BOARD * 3 531 4485A / 2808 REV.A
ETS 250, Wrist Strap Tester, Electro-Tech Systems 250
TIERNEY GP-1 XCL100-17V13H115 1KVA 1PH 120/240V VOLTAGE TRANSFORMER D413537
PARKER NICHOLS MOTOR 4ZC55A 283-95 1/2IN NPT HYDRAULIC MOTOR D223823
MEYER PA-82-C-12 36X12X5-1/2IN WHITE ELEVATOR BUCKEMEYER PA-82-C-12 36X12X5-1/2IN WHITE ELEVATOR BUCKET D385014
UNICO 300 T84 4 IN 208-230/460V-AC 1/2HP 3450RPM CENTRIFUGAL BLOWER D499652
WESTINGHOUSE S20N11S51N 50VA 1PH 240/480V-AC 120/240V-AC TRANSFORMER D514052
Y141 Allen Bradley DC Output Modul SPS 1771-0BN B 1771-OBN C03
QUANTA-RAY MCI-2 IEEE MCI-1 DYE LASER ConTROLLER D51967