FURNAS ELECTRIC CO 3SB3-500-4MD01
FURNAS ELECTRIC CO 3SB3-500-4MD01
RELIANCE ELECTRIC 0-51845
SICK OPTIC ELECTRonIC WE12L-2P430
福州卓凯电子科技有限公司
AB 系列 优势1746 1756 1770
1771 1747 1336 PLC 系列触摸屏 2711系列。
西门子 6ES7-300 6DD 6FC 6SC 6GK系列。
FANUC A06B A20B A02B 驱动系列。
ABB DSQC 示教器 系列。
施耐德 140系列 PLC CPU 系列。
安川模块伺服控制器。
GE IC693 IC697 系列。
价格优势 欢迎咨询
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对于用户来说,在编写用户程序或选择设备时,必须清楚下面介绍的三个阶段,即用户程序执行过程的原理。
PLC采用集中处理的方法,即对输入扫描信号、执行用户程序和输出刷新都采用集中分批处理的工作方式。
输入扫描 在这一阶段中,PLC以扫描方式读入所有输入端子上的输入信号,并将输入信号存入输入映像区,输入映像存储器被刷新。在程序执行阶段和输出刷新阶段中,输入映像存储器与外界隔离,其内容保持不变,直至下一个扫描周期的输入扫描阶段,才被重新读入的输入信号刷新。可见,PLC在执行程序和处理数据时,不直接使用现场当时的输入信号,而使用本次采样时输入到映像区中的数据。如果输入设备能使PLC输入端形成闭合回路,对应输入端编号的内部输入继电器内保存为“1”,即相当于继电器线圈导通。在程序执行过程中,该编号对应的触点动作;如果输入设备能使输入开路,则对应输入端编号的内部输入继电器内保存为“0”,即相当于继电器线圈没导通,在程序执行过程中,该编号对应的触点不动作。如果在PLC处于非输入扫描的阶段,PLC外的输入设备状态发生了变化,内部输入继电器也不会发生变化,要等到下一个输入扫描阶段才能根据此时的输入状态来刷新。所以,对于少于十几毫秒的输入信号,经常采集不到。
在程序执行过程中,同一周期内,前面的逻辑结果影响后面的触点,即后执行的程序可能用到前面的**中间运算结果;但同一周期内,后面的运算结果不影响前面的逻辑关系。该扫描周期内除输入继电器以外的所有内部继电器的**终状态(导通与否),将影响下一个扫描周期各触点的开与闭。
(3)输出刷新 程序执行阶段的运算结果被存入输出映像区,而不送到输出端口上。在输出刷新阶段,PLC将输出映像区中的输出变量送入输出锁存器,然后由锁存器通过输出模块产生本周期的控制输出。如果内部输出继电器的状态为“1”,则输出继电器触点闭合。全部输出设备的 。
WESTINGHOUSE 2840A79G02 USPP 2840A79G02
WESTINGHOUSE 63E1548 USPP 63E1548
FURNAS ELECTRIC CO 3SB3-500-4MD01
WESTINGHOUSE AN11A USPP AN11A
WESTINGHOUSE FB3150N1A1B USPP FB3150N1A1B
WESTINGHOUSE LC3400 USPP LC3400
WESTINGHOUSE PB1START NSFP PB1START
FURNAS ELECTRIC CO 16BC35AG81 USPP 16BC35AG81
FURNAS ELECTRIC CO 3RV1-915-2BB USPP 3RV19152BB
FURNAS ELECTRIC CO 3TX7-002-1AB00 FNFP 3TX70021AB00
FURNAS ELECTRIC CO 52SW2AAB USPP 52SW2AAB
ITE SIEMENS 5SJ4-311-7HG42 NSPP 5SJ43117HG42
ITE SIEMENS HN656 NSFP HN656
MOORE PRODUCTS 66BA3 USPP 66BA3
SIEMENS 4AV3002-2AB USPP 4AV30022AB
SIEMENS 6ES7-158-0AA01-0xA0 USPP 6ES71580AA010xA0
SIEMENS 6RA2-203-8DK26-1 USPP 6RA22038DK261
SIEMENS E3J1 NSPP E3J1
LEDEX HD30-DM-500-5LD-1 USPP HD30DM5005LD1
FURNAS ELECTRIC CO 3SB3-500-4MD01
SICK OPTIC ELECTRonIC ISD260-1111 USPP ISD2601111
SICK OPTIC ELECTRonIC WL12G-N530 USPP WL12GN530
DODGE 000848 USPP 000848
DODGE 1276-00 NSFP 127600
DODGE F2B-SCM-107 NSPP F2BSCM107
ALLEN BRADLEY 1336S-B050-AN-EN3 USPP 1336SB050ANEN3
ALLEN BRADLEY 1492-FPK2250 NSFP 1492FPK2250
ALLEN BRADLEY 1746-NR8 NSFP 1746NR8
ALLEN BRADLEY 193-EA5FB FNFP 193EA5FB
ALLEN BRADLEY 2711C-CBL-AB03 USPP 2711CCBLAB03
ALLEN BRADLEY 700-CF400DJ FNFP 700CF400DJ
ALLEN BRADLEY 800F-ARP NSPP 800FARP
ALLEN BRADLEY 800R-1TZ NSFP 800R1TZ
ALLEN BRADLEY 800T-X559J FNFP 800TX559J
ALLEN BRADLEY AF-236 USPP AF236
BANNER ENGINEERING D11E2P6FP USPP D11E2P6FP
BANNER ENGINEERING PT410 FNFP PT410
BANNER ENGINEERING SM30PRL NSFP SM30PRL
PHOTOSWITCH 1485R-P2R5-F5 NSFP 1485RP2R5F5
ITE SIEMENS EH3-B020 NSPP EH3B020
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WESTINGHOUSE A201K1AA USPP A201K1AA
WESTINGHOUSE EHB3015V NSPP EHB3015V
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ALLIS CHALMERS CXL-0013 NSPP CXL0013
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FURNAS ELECTRIC CO 3TF47-22-0DB4 NSFP 3TF47220DB4
FURNAS ELECTRIC CO 3SB3-500-4MD01
FURNAS ELECTRIC CO 4AM6142-8DD40-0FA0 NSPP 4AM61428DD400FA0
ITE SIEMENS 3NA3-810 NSFP 3NA3810
ITE SIEMENS FDS06R USPP FDS06R
MILLTRonICS 69900010 NSFP 69900010
SIEMENS 3TF3200-0AR0 USPP 3TF32000AR0
SIEMENS 6ES7-090-0XX84-0FF0 USPP 6ES70900XX840FF0
SIEMENS 6FX8002-5CX28-1AG0 NSPP 6FX80025CX281AG0
SIEMENS A5E00308150 USPP A5E00308150
TEXAS INSTRUMENTS PLC 5MT-14-30CL NSPP 5MT1430CL
SICK OPTIC ELECTRonIC I14-M0213 NSFP I14M0213
SICK OPTIC ELECTRonIC VT180-P440 FNFP VT180P440
SICK OPTIC ELECTRonIC WTR2-P551S08 USPP WTR2P551S08
DODGE 1210-7/8 USPP 121078
DODGE 513LER203 NSFP 513LER203
ALLEN BRADLEY 1336F-B025-AA-EN-GM1-HCS2 USPP 1336FB025AAENGM1
ALLEN BRADLEY 1492-CB2-G-020-H1 USPP 1492CB2G020H1
ALLEN BRADLEY 160-BA04NPS1 NSFP 160BA04NPS1
ALLEN BRADLEY 1794-IB32 FNFP 1794IB32
ALLEN BRADLEY 22A-A4P5N104 FNFP 22AA4P5N104
ALLEN BRADLEY 599-TC4N NSPP 599TC4N
ALLEN BRADLEY 800E-4DL5GX10 NSFP 800E4DL5GX10
ALLEN BRADLEY 800M-NA FNFP 800MNA
ALLEN BRADLEY 800T-PDH24G NSFP 800TPDH24G
ALLEN BRADLEY 855T-L10 NSPP 855TL10
BANNER ENGINEERING BF23P NSPP BF23P
BANNER ENGINEERING OPBA3 NSPP OPBA3
BANNER ENGINEERING S18UUAQ USPP S18UUAQ
BANNER ENGINEERING UC-LG NSPP UCLG
PHOTOSWITCH 871T-L4B12 USPP 871TL4B12
TEXAS INSTRUMENTS PLC TIL306A USPP TIL306A
WESTINGHOUSE 1956074A USPP 1956074A
WESTINGHOUSE 46A8101G18 USPP 46A8101G18
WESTINGHOUSE 966484-H NSFP 966484H
WESTINGHOUSE DA3250Y USPP DA3250Y
WESTINGHOUSE HMCP250A5 USPP HMCP250A5
WESTINGHOUSE NLMS-1200 USPP NLMS1200
WESTINGHOUSE TA400LAI NSFP TA400LAI
FURNAS ELECTRIC CO 3RT1026-1AP60 NSFP 3RT10261AP60
FURNAS ELECTRIC CO 3SB3-500-4MD01
FURNAS ELECTRIC CO 3SE5-232-0HC05 NSFP 3SE52320HC05
FURNAS ELECTRIC CO 47TA32HX1 NSFP 47TA32HX1
FURNAS ELECTRIC CO H34 NSPP H34
ITE SIEMENS E21B020 NSFP E21B020
LANDIS & GYR 545-719 NSPP 545719
SIEMENS 3NW8212-1-EACH NSFP 3NW82121EACH
SIEMENS 6ES5-440-8MA22 NSFP 6ES54408MA22
SIEMENS 6FC5-356-0BB11-0AE1 USPP 6FC53560BB110AE1
SIEMENS 701819-22AW USPP 70181922AW
TEXAS INSTRUMENTS PLC 305-20T NSFP 30520T
SICK OPTIC ELECTRonIC FGSS-450-111 USPP FGSS450111
SICK OPTIC ELECTRonIC VTF18-4P1440 NSPP VTF184P1440
DODGE 023017 NSFP 023017
DODGE 119012 USPP 119012
DODGE 3020-2-5/8 NSFP 3020258
ALLEN BRADLEY 1326AB-C3E-11 USPP 1326ABC3E11
ALLEN BRADLEY 1489-AACL318 NSPP 1489AACL318
ALLEN BRADLEY 1497-H-BASX-0-N NSFP 1497HBASX0N
ALLEN BRADLEY 1777-CP NSPP 1777CP
ALLEN BRADLEY 20AD014A1AYNARNN USPP 20AD014A1AYNARNN
FURNAS ELECTRIC CO 3SB3-500-4MD01
ALLEN BRADLEY 50393 USPP 50393
ALLEN BRADLEY 7300-VPC-1 USPP 7300VPC1
ALLEN BRADLEY 800H-NP41D NSPP 800HNP41D
ALLEN BRADLEY 800T-N159G FNFP 800TN159G
ALLEN BRADLEY 854K-24TL6 NSPP 854K24TL6
ALLEN BRADLEY Z-31794 NSFP Z31794
BANNER ENGINEERING MBCC-430 NSPP MBCC430
BANNER ENGINEERING QS30VR3FF200 NSPP QS30VR3FF200
BANNER ENGINEERING SSM-375 NSFP SSM375
PHOTOSWITCH 43GR-TBB25SL USPP 43GRTBB25SL
SIEMENS 6ED1-052-1CA00-0BA0 NSPP 6ED10521CA000BA0
WESTINGHOUSE 177C524G24 NSFP 177C524G24
WESTINGHOUSE 3C12OKA1 USPP 3C12OKA1
WESTINGHOUSE 774-A NSFP 774A
WESTINGHOUSE BFF44F USPP BFF44F
WESTINGHOUSE HFB3070 USPP HFB3070
WESTINGHOUSE NL-308L USPP NL308L
FURNAS ELECTRIC CO 3SB3-500-4MD01
WESTINGHOUSE S-1406933D USPP S1406933D
FURNAS ELECTRIC CO 3RH2911-4DA11 USPP 3RH29114DA11
FURNAS ELECTRIC CO 3SB3-403-1PE NSPP 3SB34031PE
FURNAS ELECTRIC CO 42BE35AJ527R USPP 42BE35AJ527R
FURNAS ELECTRIC CO 8WD4-420-5AF NSPP 8WD44205AF
ITE SIEMENS A213D12 NSFP A213D12
ITE SIEMENS TA2N750 USPP TA2N750
SIEMENS 1FT5076-0AF71-1-Z USPP 1FT50760AF711Z
SIEMENS 6ED1-055-1CB00-0BA0 USPP 6ED10551CB000BA0
SIEMENS 6ES7621-1AD02-0AE3 USPP 6ES76211AD020AE3
SIEMENS 6SL3-203-0CD21-4AA0 NSFP 6SL32030CD214AA0
SIEMENS SFH601-3 NSPP SFH6013
SICK OPTIC ELECTRonIC CLV-220-1010 NSFP CLV2201010
SICK OPTIC ELECTRonIC NT6-3032 USPP NT63032
SICK OPTIC ELECTRonIC WT18-3P610 NSPP WT183P610
FURNAS ELECTRIC CO 3SB3-500-4MD01
DODGE 119197 NSFP 119197
DODGE BF683CN140TC NSFP BF683CN140TC
ALLEN BRADLEY 100S-C30DJ14BC NSFP 100SC30DJ14BC