福建中立恒自动化设备有限公司
一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。
它采用可以编制程序的存储器,用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令,并能通过数字式或模拟式的输入和输出,控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体,易于扩展其功能的原则而设计。在工业生产的各个领域,机械加工企业为了提高生产效率,采用机械化流水作业的方式,对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代,生产线承担的加工对象也随之改变,这就需要改变控制程序,使生产线的机械设备按新的工艺过程运行,而继电接触器控制器系统是采用固定接线,很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多,随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。
发展趋势:1.向高速度、大容量方向发展
为了提高PLC的处理能力,要求PLC具有的响应速度和更大的存储容量。目前,有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。
在存储容量方面,有的PLC可达几十兆字节。为了扩大存储容量,有的公司已使用了磁泡存储器或硬盘。
2.向超大型、超小型两个方向发展
当前中小型PLC比较多,为了适应市场的多种需要,今后PLC要向多品种方向发展,特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC,其使用32位微处理器,多CPU并行工作和大容量存储器,功能强。
以下链接皆有货
SWAGELOK SS-65TSW12P-NL-SC11, Ball Valve Reinforced PTFE Seat 3/4" Pipe Weld
SWAGELOK SS-6BK, SS6BK, Bellows Sealed Valve 3/8", #1374M2
SWAGELOK SS-6BK-TW-1C, SS6BKTW1C, Bellows Sealed Valve KF-16,
SWAGELOK SS-6C-1 STAINLESS STEEL POPPET CHECK VALVE - 2000 PSI
SWAGELOK SS-6C-1 STAINLESS STEEL POPPET CHECK VALVE - 2000 PSI
SWAGELOK SS-6NBS6-G, SS6NBS6G Union Bonnet Needle Valve 3/8", #1615C2
SWAGELOK SS-6P6T, SS-8P6T, Quarter Turn 3/8"-1/2", #1637F18
SWAGELOK SS-810-1-12, SS-8-TA-1-12 MALE ADAPTER 1/2" X 3/4" NPT 2#1639F20
SWAGELOK SS-810-1-6, SS81016, Male Connector 1/2" T, 11 #104P4
SWAGELOK SS-810-1-8W, SS81018W, Male Connector 1/2",
SWAGELOK SS-810-1-8W, SS81018W, Male Connector 1/2",
SWAGELOK SS-810-2-6, SS-810-2-4, SS-600-2-6, SS-600-2-4, 9#163916
SWAGELOK SS-810-3 SS-810-6 SS-810-9 TEE ELBOW 1/2", 9, #163912
SWAGELOK SS-810-3, SS-810-4, CROSS TEE ELBOW 1/2", 7 #1637F17
SWAGELOK SS-810-6, SS8106, Union 1/2", 25,
SWAGELOK SS-810-6, SS-810-9, UNION ELBOW 1/2", 9 #1637F16
SWAGELOK SS-810-61 BULKHEAD 1/2" & BULKHEAD 3/8" SS-600-61, 7#1637F9
SWAGELOK SS-810-61SC11, Bulkhead Union 1/2", 6, SHPSAMEDAY#1178E8
SWAGELOK SS-810-8-8, SS-810-8-4, SS-600-8-8, SS-600-8-4, 5#1637F10
SWAGELOK SS-810-P, SS810P, Plug 1/2", #104P3
SWAGELOK SS-810-SET, SS-600-SET, SS-400-SET, 190 SET, #109V15
Swagelok SS-83KS8, SS83KS8,High Pressure Ball Valve,
SWAGELOK SS-83XKS6, High Pressure 3-Way Ball Valve 3/8" TUBE X 1/4" FNPT #ZA2
Swagelok SS-8BG-VCR-ID-18787, SS8BGVCRID18787, 1/2" VCR, AA#15
SWAGELOK SS-8BK-1D, SS8BK1D, Bellows Sealed Valve 1/2",
SWAGELOK SS-8BK-1O, SS-8BK-10, Bellows Sealed Valve 1/2",
SWAGELOK SS-8BK-V19, SS8BKV19, Bellows Sealed Valve 1/2" FVCR, #131V1
SWAGELOK SS-8BK-V19-10, BELLOWS VALVE 1/2" FVCR, SS8BKV1910, #126B5
SWAGELOK SS-8BK-V19-1CM, Bellows Sealed Valve 1/2" FVCR, #1606Z11
SWAGELOK SS-8BK-V47-10, High Purity Bellows Valve 1/2" FVCR, #136HV
SWAGELOK SS-8BK-V47VA-1C, Bellows Valve , SS8BKV47VA1C,
SWAGELOK SS-8C-1, SS8C1, Check Valve 1/2", 1 PSI, , #1622N1
SWAGELOK SS-8F-7, SS8F7, In-Line Particulate Filter 7 Micron, 4#1473C
SWAGELOK SS-8P6T, SS8P6T, Quarter Turn Plug Valve 1/2",
SWAGELOK SS-8UG-V19, SS8UGV19, Sealed Valve 1/2" FVCR, #1327C4
SWAGELOK SS-8UG-VCR-6C & MS-6C, Bellows Sealed Valve 1/2" VCR, NORMALLY CLOSED
SWAGELOK SS-8-VCR-1, SS8VCR1, Female Nut 1/2", 30,
SWAGELOK SS-8-VCR-1, SS8VCR1, Female Nut 1/2", 34,
SWAGELOK SS-8-VCR-1, SS8VCR1, Female Nut 1/2", 41,
SWAGELOK SS-8-VCR-1, SS8VCR1, Female Nut 1/2", 44,
SWAGELOK SS-8-VCR-1, SS8VCR1, Female Nut 1/2", 50,
SWAGELOK SS-8-VCR-1, SS8VCR1, Female Nut 1/2", 56,
SWAGELOK SS-8-VCR-2-GR, Face Seal Fitting 1/2", 160 #1472W5
SWAGELOK SS-8-VCR-4, SS8VCR4, Male Nut 1/2" VCR, 25,
SWAGELOK SS-8-VCR-4, SS8VCR4, Male Nut 1/2" VCR, 30
SWAGELOK SS-8-VCR-4, SS8VCR4, Male Nut 1/2" VCR, 30,
SWAGELOK SS-8-VCR-4, SS8VCR4, Male Nut 1/2" VCR, 49,
SWAGELOK SS-8-VCR-6-DM, Double Male Union 1/2" VCR, SS8VCR6DM, 17 #117T1
SWAGELOK SS-8-VCR-7-4VCRF, SS8VCR74VCRF, 7, #1612V6
SWAGELOK SS-8-VCR-P, SS8VCRP, Plug 1/2" VCR, 30, #1549W9
SWAGELOK SS-8-VCR-P, SS8VCRP, Plug 1/2" VCR, 50,
SWAGELOK SS-AFSS8-A30C4, MS-A30-4-DIN, F05F07-N-DS-14 AZNX SC000304U SHPSAMEDAY
SWAGELOK SS-BN8VCR8-C, High Purity Bellows Sealed Valve 1/2" VCR #1615V6
SWAGELOK SS-BNVCR4-2C, SSBNVCR42C, High Purity 1/4" VCR,
Swagelok SS-BNVCR4-O, Bellow Sealed Valve 1/4" VCR, #Z17
SWAGELOK SS-CHS8-EP-5 STAINLESS STEEL POPPET CHECK VALVE,1/2",5 PSI, EP O-RING
SWAGELOK SS-DLV51, Diaphragm Valve 1/4" FVCR, #1221P13
SWAGELOK SS-DLV51, Diaphragm Valve 1/4" FVCR, #131R2
SWAGELOK SS-4F4A, SS4F4A Pressure Angle-Pattern 1/4" NPT, 2#1644T13
SWAGELOK SS-DSS6, SSDSS6, Pressure Diaphragm Sealed Valve, #1375W9
SWAGELOK SS-FJ8TA8TA8-20, Braid Hose Convoluted 1/2" TUBE,
SWAGELOK SS-FJ8TA8TA8-20, FLEXIBLE METAL 1/2" TUBE X 20" LG, 2
SWAGELOK SS-FL4SL4SL4-36, FLEXIBLE METAL 1/4" COMP X 36" LG,
SWAGELOK SS-FM12TA12SL12-120, Braided Hose 3/4” X 120",
SWAGELOK SS-FM8SL8PM8-42, Flexible Hose 1/2" tube x 1/2" npt x 42" L, 2
Swagelok SS-H83PS12-LH, Ball Valve 3/4" COMP, SS-H83PS12, #120P1
SWAGELOK SS-HFD38-VCR4-P20, SSHFD38VCR4P20 High Flow Preset Pressure UHP Gas#M40
SWAGELOK SS-HFS3B-HM4HF4I-P20, Preset Pressure 1/4" F/M VCR, #CC6
SWAGELOK SS-L62TS6-JL, SSL62TS6JL, Ball Valve 3/8", #121W4
SWAGELOK SS-L63TF8-SG, SSL63TF8SG BALL VALVE SOUR GAS 1/2",
SWAGELOK SS-MGVR4-MH, SSMGVR4MH, Metering Valve 1/4" #1631AK
SWAGELOK SS-QC4-B1-400K2, Quick Connect Orange Key 1/4" , 10 #1181W5
SWAGELOK SS-QC4-B1-400K2, Quick Connect Orange Key 1/4" , 9 #1181W6
SWAGELOK SS-QC4-B-400KZ, SSQC4B400KZ, QUICK CONNECT BODY Kalrez O-Rings #N35
SWAGELOK SS-QC4-S-400K2, Quick Connect Orange Key 1/4" , 10 #103M6
SWAGELOK SS-QC4-S-400K2, Quick Connect Orange Key 1/4" , 15
Swagelok SS-QC8-B-8PFK2, Quick Connect 1/2" FNPT, Set Key GRN YELL BLUE ORGANGE
Swagelok SS-QC8-B-8PFK4 & SS-QC8-B1-810K4, Quick Connect,Set Key Yellow#118K6
SWAGELOK SS-QC8-D-810 & SS-QC8-B-810, Quick Connect 1/2", SET #110V24
SWAGELOK SS-QF8-S-6PM
SWAGELOK SS-QF8-S-6PM
SWAGELOK SS-QF8-S-810, SSQF8S810, Quick Connect, 13, #1541N3
SWAGELOK SS-QT8-D-12PF, SSQT8D12PF, Quick Connect Stem w VALVE, #F19G
SWAGELOK SS-QTM4A-B-4PM, SSQTM4AB4PM, Quick Connect Body,
Swagelok SS-QTM8A-B-16PF, Quick Connect 1" FNPT, #1375N5
Swagelok SS-RL3S4, SSRL3S4 Pressure Proportional Relief Valve, #1654D3
SWAGELOK SS-RL3S4, SSRL3S4, Proportional Relief Valve 1/4", #104P2
SWAGELOK SS-RL3S4, SSRL3S4, Relief Valve 1/4", #M46
SWAGELOK SS-S68PF32-SW32T, Ball Valve 2" FNPT X 2" SOCKET WELD,
SWAGELOK SS-SCF3-VR8-P-600, GAS FILTER 1/2”, 3000 PSIG, #1629Q1
SWAGELOK SS-SS2, SS-2MG, SS-4MG, Flow Metering Valve 1/8" TO 1/4", 4
SWAGELOK SS-TH4TA4TA4-23-V, S02-N-4, Braided Hose 1/4",
SWAGELOK SS-TH8TA8TA8-12, Braided Hose 1/2" TUBE X 12",
SWAGELOK SS-V3NBF8-FL, 3-Valve Instrument Manifold 1/2", RACK H #H69
SWAGELOK SS-XT4RF4RF4-36, Smooth Bore PTFE Flexible 1/4" FVCR BOTH ENDS 3
SWAGELOK SS-XT6TA6TA6-36, FLEX HOSE Fiber Braid PTFE Hose 3/8'' SSXT6TA6TA636
SWAGELOK TEE ELBOW UNION 1/4" SS-400-3, SS-400-6, SS-400-9, 11, #1606V42
Swagelok TEE REDUCER 1" X 1/2", 316L-16TB7-3-16-8, #1215P15
SWAGELOK TEE REDUCER UNION, 316L-16TB7-3-16-8P, 316L16TB73168P, #103M8
Swagelok tee union 5/8", SS-1010-3, SS10103, #1622T7
Swagelok Tee-Type Particulate Filter 1/4",Micron, SS-4FT-2, SS4FT2, 5
SWAGELOK Tee-Type Particulate Filter 1/8" T,Micron, SS-2TF-2-12457, 3
Swagelok Teflon Hose SS-TH8AS8AS8-60, SSTH8AS8AS860, #152B
SWAGELOK TI-402-1, TI4021, TITANIUM NUT 1/4" , 11, #129W12
SWAGELOK Toggle Valve 1/2" COMP, SS-1GS8-SPR, SS1GS8SPR, #T22
Swagelok Toggle ValveWays 1/4" Tube Butt Weld 6LV-BNTC111P, 6LVBNTC111P #ZJ1
SWAGELOK Toggle Valve 3/8" COMP, SS-1GS6-SPR, SS1GS6SPR, #T21
SWAGELOK Tube Adapter Elbow 12MM, SS-12M0-2R-12MM, 6, #1649Q6
Swagelok Tube Fitting 316 SS-42GS4 40G Series Ball Valve 5/16" - Lot of 6 pcs.
Swagelok Tube Sawing Guide 3/16" to 1", MS-TSG-16, MSTSG16,
Swagelok Union Bonnet Needle Valve 3/8", NC Actuator, SS-6NBS6-96C,
SWAGELOK Union Cross 1/4", SS-400-4, SS4004, 9, #1606V29
SWAGELOK UNION NIPPLE 1/2" VCR X 5", 316L-8-VCR-3A, SS-8-VCR-4, 13
SWAGELOK UNION REDUCER SS-810-6-4 & SS-1010-6-8, , #1622N2
SWAGELOK Union Tee 3/4", SS-1210-3, SS12103, SHIPSAMEDA, 9,
Swagelok VAC Goop Thread Lubricant, MS-TL-VGT,
Swagelok VAC Goop Thread Lubricant, MS-TL-VGT, MSTLVGT, 10 #139H4
Swagelok VAC Goop Thread Lubricant, MS-TL-VGT, MSTLVGT, 15
Swagelok VAF-M1-3352-1-0-Z, 011155438.045, Variable Area Flowmeter #133G
Swagelok Valve (3X) 1/4" Female VCO, SS-4BY-V68-1C, SS4BYV681C See Des #B20
SWAGELOK VALVE ACTUATOR PNEUMATIC SPRING RETURN, MS-MB-83-133 & MS-133-SR
SWAGELOK VALVE SS-4BMG-V51E LOT OF 5
SWAGELOK Variable Area Flowmeter 0-8SCFH, VAF-M3-2-1-02S-0, 011048040.002
SWAGELOK Variable Area Flowmeter 1/4", .65 TO 6.GPH, VAF-M1-A4S-1-0-Z #102V1
Swagelok Variable Area Flowmeter 80-800 NI/HR, VAF-M1-05M-1-0, #130Q BOX "A"
SWAGELOK VCR 1/4", 6LV-8-WVCR-9-DF, SS-4-VCR-A1-4M, SS-4-VCR-1-4, SS-4-WVCR-7-4
Swagelok VCR Cap 1/2", SS-8-VCR-CP, SS8VCRCP, 20, #1607Q22
Swagelok VCR Cap 1/2", SS-8-VCR-CP, SS8VCRCP, 40,
SWAGELOK VCR Face 1/2" FVCR, SS-8-WVCR-6-810, #1600Q10 BOX A