6SE3215-8DB40

分类:
选择深圳长欣,选择放心,售后无忧
大量现货,当天顺丰发货!
了解产品更多详细信息或购买请拨打以下电话咨询:
白工微信
(加微信咨询)

联系人:白工

电话:18150087953 / 18005022138

Whatsapp/Wechat:+8618150087953 / +8618005022138

Email:sales@cxplcmro.com

描述

6SE3215-8DB40

目前,可编程序控制器已经广泛地应用在各个工业部门。随着其性能价格比的不断提高,应用范围还在不断扩大,主要有以下几个方面:

    1.逻辑控制
    可编程序控制器具有“与”、“或”、“非”等逻辑运算的能力,可以实现逻辑运算,用触点和电路的串、并联,代替继电器进行组合逻辑控制,定时控制与顺序逻辑控制。数字量逻辑控制可以用于单台设备,也可以用于自动生产线,其应用领域最为普及,包括微电子、家电行业也有广泛的应用。
    2.运动控制
    可编程序控制器使用专用的运动控制模块,或灵活运用指令,使运动控制与顺序控制功能有机地结合在一起。随着变频器、电动机起动器的普遍使用,可编程序控制器可以与变频器结合,运动控制功能更为强大,并广泛地用于各种机械,如金属切削机床、装配机械、机器人、电梯等场合。
    3.过程控制
    可编程序控制器可以接收温度、压力、流量等连续变化的模拟量,通过模拟量I/0模块,实现模拟量(Analog)和数字量(Digital)之间的A/D转换和D/A转换,并对被控模拟量实行闭环PID(比例-积分-微分)控制。现代的大中型可编程序控制器一般都有PID闭环控制功能,此功能已经广泛地应用于工业生产、加热炉、锅炉等设备,以及轻工、化工、机械、冶金、电力、建材等行业。
    4.数据处理
    可编程序控制器具有数学运算、数据传送、转换、排序和查表、位操作等功能,可以完成数据的采集、分析和处理。这些数据可以是运算的中间参考值,也可以通过通信功能传送到别的智能装置,或者将它们保存、打印。数据处理一般用于大型控制系统,如无人柔性制造系统,也可以用于过程控制系统,如造纸、冶金、食品工业中的一些大型控制系统。
    5.构建网络控制
    可编程序控制器的通信包括主机与远程I/0之间的通信、多台可编程序控制器之间的通信、可编程序控制器和其他智能控制设备(如计算机、变频器)之间的通信。可编程序控制器与其他智能控制设备一起,可以组成“集中管理、分散控制”的分布式控制系统。
    当然,并非所有的可编程序控制器都具有上述功能,用户应根据系统的需要选择可编程序控制器,这样既能完成控制任务,又可节省资金。

产品承诺:
保 证 全新原装进口,
保 证 安全准时发货,
保 证售后服务质量,
优势价格,大量现货。

主营DCS系统配件
机器人系统配件
大型伺服系统配件
品牌:ABB   ,AB  ,GE,FOXBORO,本特利,英维思,伍德沃德,西屋,瑞恩,施耐德,西门子,摩托罗拉,安川。力士乐。ACSO,横河等进口品牌。 专业销售进口DCS  PLC系统备件模块
Triconex Siemens Yaskawa ABB GE Ovation AB Foxboro Motorola Schneider XYCOM KUKA
  专业销售进口DCS  PLC系统备件模块 15天包退换 一年质保 大量现货  国内实力库存商家

Siemens Simadyn D 6DD1600-0AF0 PM16 Prozessmodul

ABB C5 Roboter APMXB-03 MXB-03 3E032215U E3E032215U NEU

INDRAMAT TVM-2.2-050-220​/300-W1-220/380 NEU + OVP

FANUC Alpha Spindle Controller A06B-6078-H311#​H500

Siemens Simadyn D 6DD1601-0AH0 ITDC Modul

Indramat Servo Controller HDS04.2-W200N-H​S32-01-FW

Siemens Simoreg Kompaktgerät 6RA2625-6MW30 D200/60 Mreq

Siemens Simoreg Kompaktgerät 6RA2617-6MW30 D200/26 Mreq

Siemens Sinumerik 810M 6FC3541-0AA-Z inkl. Karten

Danfoss Frequenzumricht​er VLT5027 175Z4135 31,6kVA TOP

Siemens Sinumerik System 8 MS401-A 6FX1113-8AA00 V. H00

Siemens Sinumerik System 8 MS401-A 6FX1113-8AA00 V. 04

ABB C5 Roboter Card TBK-02 3E032244 / E3E032244 NEU

SEW MOVIDRIVE MDF60A0220-503-​4-00 22,0kW + MDX + MDF

ABB Veritron Stromrichter AAD 6301A V4 75A

Siemens Simoreg Stromrichter 6RA2616-6DX30-0

Siemens Simoreg Stromrichter 6RA2616-6DX30-0 Kompakt

Siemens Sinumerik Steuerung OP032S 6FC5203-0AB20-1​AA0

Artis CTM-1/32MB Profi- Service- Sensorbus Steckkarte

Siemens Sinumerik Kompaktbedienfe​ld 6FM1496-4DA20

Siemens Simadyn D 6DD1601-0AH0 ITDC Modul

Siemens Sinumerik Bedientafel 6FC5203-0AB20-0​AA0 Ver. D

Indramat AC-Controller HDS03.2-W100-HS​45-01-FW NEW

Siemens Sinumerik HT6 6FC5403-0AA10-0​AA0 NEUWERT

Siemens SICOMP MMC TP-MSR 2 9AB4141-1FB03 + 9AB4141-3FA

Indramat REFU RS51.1-4G-006-L​-V1-FW CFG-RD500-NN-NN

GENERAL ELECTRIC GE-DRIVE AV-300 6KAV3022BD1 42A NEW

Lenze EVS9327-ES Servo Umrichter EVS9327ES 22,5kVA

Siemens Sinumerik 810M 6FC3541-0AA-Z inkl. Karten

Bosch Servo Drive Modul VMA 35 BR 001-D 35A

Indramat AC-Servo Controller DDS02.2-A100-BE​45-01-FW

Siemens Simicro AMS-M348-A1 C8117-A692-A1-3 Neuwert

Siemens Sinumerik Sprint 8 MS250 6FX1190-3AA00 MS250A

Siemens Sinumerik 8 Bedientafel 548021.9009.01 MS421D

Siemens Sinumerik System 8 MS250 6FX1190-3AA00 MS250A

Beckman Ultra Rotor NVT65 NVT 65 65000 RPM U/min

Siemens Simatic S7 WinAC Pro 416-2 6ES7616-2PG01-0​AB4

Indramat REFU RS51.1-4G-006-L​-V1-FW CFG-RD500-NN-NN

Siemens Simatic S5 6ES5312-3AB22 6ES5-312-3AB22 NEW

FANUC Common Converter Alpha Servo Drive A06B-6071-H126

Siemens Sinumerik 12″ Panel 6FC3988-3AH + 6EW1060-0AA

Fanuc Servo Controller A06B-6127-H209 11,6kW

ABB BBC Veritron Doppelstromrich​ter AAD 6301A V1

Siemens Simadyn D 6DD1600-0AC0 PM1 Prozessmodul

Danfoss Umrichter VLT3022 VLT 3022 175H1238 15kW

Indramat AC-Controller HDS03.2-W100-HS​45-01-FW NEW

INDRAMAT Servo Controller TDM1.2-050-300-​W1-220 NEU

INDRAMAT Servo Controller HDS03.2-W100N-H​S12-01-FW NEU

INDRAMAT Servo Controller HDS03.2-W100N-H​S12-01-FW NEU

INDRAMAT Servo Controller HDS03.2-W100N-H​S12-01-FW NEU

Indramat AC-Servo Controller DDS02.2-A100-BE​45-01-FW

Indramat AC-Servo Controller DDS02.2-A100-BE​12-01-FW

Indramat AC-Servo Controller DDS02.2-A100-BE​12-01-FW

Siemens Sinumerik System 7 Meßkreis GN711B GN 711 B

Siemens Simadyn D 6DD1600-0AE2 PM12 Prozessmodul

Siemens Simadyn D 6DD1600-0AE2 PM12 Prozessmodul

Siemens Simovert 6SC6030-2AA02 D165-D165/25 M5REQ

FANUC Alpha Servo Controller A06B-6124-H206 NEU

Siemens Simadyn D 6DD1600-0AE2 PM12 Prozessmodul

Siemens Simadyn D 6DD1600-0AE2 PM12 Prozessmodul

Siemens Simadyn D 6DD1601-0AE0 PG16 Version H

Siemens Simadyn D 6DD1601-0AE0 PG16 Version F

Siemens Simadyn D 6DD1601-0AE0 PG16 Version M

Siemens Simadyn D 6DD1601-0AB0 PG1 Prozessmodul

Siemens Simatic S5 IP241 6ES5241-3DA11 6ES5-241-3DA11

ABB C5 Roboter Cable Unit Vertikal Arm 3E032185

FANUC Alpha Servo Amp A06B-6073-H144 NEW

Siemens Simodrive Transistorsteue​rung 6SC6508-0AA02 V.F

Siemens Simoreg 6RA2176-6DS20-4​DB0 197A D460/240

Siemens Simadyn CS4 D 6DD1660-0AG0 Version B01 TOP

Siemens Panel OP27 6AV3627-1JK00-0​AX0 (Nr.1) Ver. A04

Siemens Panel OP27 Mono 6AV3627-1JK00-0​AX0 A06 (Nr.2)

Siemens Simatic S5 WF481A 6FM1481A-2AB00 6FM1481-2AB00

Siemens Simatic S5 6ES5544-3UB11 6ES5-544-3UB11 Neuwert

Bosch Rexroth Servodyn ASM 10-T ASM10-T 047838-402

Bosch Rexroth Servodyn ASM 10-T ASM10-T 047838-402

Fanuc Servo Controller A06B-6124-H207 5,7kW

Siemens Panel OP27 Mono 6AV3627-1JK00-0​AX0 A05 (Nr.3)

Siemens Panel OP27 Mono 6AV3627-1JK00-0​AX0 A06 (Nr.4)

Siemens Panel OP27 Mono 6AV3627-1JK00-0​AX0 A05 (Nr.6)

Fanuc GE Series 16-T LCD/MDI Unit A02B-0200-C061/​TBR

Fanuc CPU Main Board A16B-3200-0412 /05A NEU NEW

Fanuc CPU Main Board A16B-3200-0412 /08A NEU NEW

INDRAMAT AC-Servo Controller HDS03.2-W075N-H​S45-01-FW

Siemens Simatic S5 WF481A 6FM1481A-2AB00 6FM1481-2AB00

INDRAMAT Servo Controller HDS03.2-W075N-H​S12-01-FW NEU

INDRAMAT Servo Controller HDS03.2-W075N-H​S12-01-FW NEU

INDRAMAT Servo Controller HDS03.2-W075N-H​S12-01-FW NEU

INDRAMAT Servo Controller DDS02.1-W050-DL​01-00 NEU

Bosch Rexroth Servodyn ASM 10 ASM10 047838-306

Siemens Sinumerik Power Supply 6EW1861-1AB TOP Zustand

Siemens Simodrive 610 6SC6112-4DA00 24/32A Top Zustand

FANUC Alpha Spindle Controller A06B-6078-H306#​H500

Siemens Simatic S5 WF706 6FM1706-3AB20 NEW Sealed

Siemens Simodrive 650 Transistorsteue​rung 6SC6508-0AA02

Siemens Simadyn D CS41 6DD1660-0AK0 Neuwertig St A04

CONTRAVES Varidyn Compact ADB/F380-60M 34kVA Neuwertig

Siemens Sinumerik CPU 6FX1138-5BB04 Version B

Siemens Simadyn D Submodul 6DD1606-3AC0 IT41 Vers H

Siemens Simatic Panel OP27 6AV3627-1LK00-1​AX0 Ver. A05

Bosch Rexroth Servodyn SPM17 SPM-17 047846-307

ABB C5 Roboter ATR EXCH. IOP-01 Card

ABB C5 Roboter AP IOS-02 APIOS-02 E032725 E-32725 NEU

Siemens Ascom Frako Schaltnetzteil 340W 78-122-3210

Siemens Simodrive 611 6SN1118-0DH23-0​AA1 Version B

Siemens Simodrive Simovert Board 6SE1200-6AB00

FANUC Alpha Servo Amp A06B-6073-H106 NEW

Siemens Sinumerik Operator OP010 6FC5203-0AF00-0​AA0 V.F

Siemens Simovert Baugruppe 6SE1200-1GA31-3

Siemens Sinumerik System 8 MS300 6FX1113-4AB01 MS301-B

Siemens Sinumerik System 8 MS710 6FX1114-5AA00 MS701-A

Siemens Sinumerik System 8 MS710 6FX1114-5AA00 MS701-A

Siemens S5 Visualisierungs​prozessor 6AV4530-1BC00-7​HA0

Siemens Simadyn D 6DD1600-0AE2 PM12 Prozessmodul V.L

Fanuc CPU Board A20B-2100-0770 NEU NEW

FANUC Alpha Servo Controller A06B-6089-H105 NEU

Siemens Simatic S5 WF706 6FM1706-3AB20 NEW

Siemens Sinumerik Operator Panel 6FC5203-0AF02-0​AA1 V.D

Bosch Rexroth PPC-R22.1 Motion Control VisualMotion 10

Bosch Rexroth PPC-R22.1 Motion Control VisualMotion 10

Siemens Simatic VS710 VS 710 6GF1-710-3AA 6GF1710-3AA

Siemens Simatic VS710 VS 710 6GF1-710-3AA 6GF1710-3AA

Siemens Simatic VS710 VS 710 6GF1-710-3AA 6GF1710-3AA

Siemens Simatic VS710 VS 710 6GF1-710-3AA 6GF1710-3AA

Siemens Simodrive Simoreg 610 FBG 6SC6100-0GB02

Indramat Rexroth PPC-R02.2N-N-V2​-NN-NN-FW PPC-R02.2 NEU

Siemens Simatic Panel PC Front 6AV7671-3AA00-0​AA0 NEU

KUKA Servo Drive NM 100 ABN NM100ABN

Siemens Simatic S5 WF706 6FM1706-3AB20 NEW

FANUC AC Servo Motor Control Unit A06B-6096-H104 NEW

Indramat AC-Servo Controller HDS03.2-W075N-H​S12-01-FW

Siemens Simatic S5 6ES5946-3UA23 6ES5-946-3UA23

Siemens Simatic S7 Panel PC 15″ KEY 577 A5E00470992

Siemens Simatic S7 Panel PC 15″ KEY 577 A5E00470992

Siemens Simodrive 650 Leistungsteil 6SC6504-0AF01 40A

Siemens Simoreg 6RA2176-6DS20-Z​A03 197A D460/240

Siemens Simatic VS710 6GF1-710-3AA 6GF1710-3AA Nr.4

FANUC Alpha Servo Controller A06B-6114-H103 SVM1-20 NEU

FANUC Alpha Servo Controller A06B-6117-H103 NEU

FANUC Alpha Spindle Amplifier A06B-6111-H002#​H550 NEU

Siemens Simoreg Power Interface C98043-A1606-L4​-16

Siemens Simatic S5 6ES5946-3UA23 6ES5-946-3UA23

Siemens Simatic S5 IP241 6ES5241-1AA12 6ES5-241-1AA12

Siemens Sinumerik 840D OP031 TFT 6FC5203-0AB11-0​AA1

Siemens Simatic 6AV3520-1EL00 Operator Panel OP20/240-8

Siemens Sinumerik FBG Interface MPC 6FX1132-1BA01 NEW

Siemens Simotion D435 Output 6AU1435-0AA00-0​AA1 Vers.C

Siemens Simotion D435 Output 6AU1435-0AA00-0​AA1 Vers.D

Bosch Rexroth Indramat HMS01.1N-W0036-​A-07-NNNN

Siemens Simodrive 611 Filter 6SL3000-0BE28-0​AA0 80kW

Siemens Simodrive 611 Filter 6SL3000-0BE31-0​AA0 120kW

Siemens Simodrive 660 N2 Regelkarte 6SC6600-4DA01 V. H

Siemens S7 6ES7416-2XK01-0​AB0 6ES7-416-2XK01-​0AB0

Bosch Rexroth Servodyn SM 50/100-T 1070077370-106 50A

Bosch Rexroth Servodyn SM 50/100-T 1070077370-106 50A

Bosch Rexroth Servodyn SM 50/100-T 1070077370-106 50A

Bosch Rexroth Servodyn SM 50/100-T 1070077370-106 50A

Bosch Rexroth Servodyn SM 50/100-T 1070077370-108 50A

Bosch Rexroth Servodyn SM 50/100-T 1070077370-108 50A

INDRAMAT Servo Controller HDS02.2-W040N-H​S12-01-FW NEU

INDRAMAT Servo Controller HDS02.2-W040N-H​S12-01-FW NEU

Siemens Sinumerik NCU 572.4 6FC5357-0BB23-0​AE0 Vers. G

Siemens Simatic OP277 OP 277 6AV6643-0BA01-1​AX0

Siemens Sinumerik 12,1″ Farb Bedientafel 6FC3988-7FD20

Bosch Rexroth Indramat HMS01.1N-W0150-​A-07-NNNN

Siemens Simodrive 611 6SN1118-0DJ23-0​AA2 NEW

Siemens Simatic S5 CPU 946 6ES5946-3UA23 6ES5-946-3UA23

CONTRAVES Antriebsregler DDA400.60 DDA 400.60 25kW NEU

Siemens Simatic S5 CPU945 6ES5945-7UA13 6ES5-945-7UA13

Siemens Sinumerik Power Supply 6EV3055-0AC Version E

Siemens Simodrive 610 Leistungsteil 6SC6100-0GC10

Siemens Simodrive 610 Leistungsteil 6SC6100-0GC10

Siemens Simodrive 611 6SN1118-1NK01-0​AA1 Vers. B NEU

Siemens Sinumerik CPU 6FX1138-5BB03 Version D

Bosch Servodyn SM 18/60-GC16 1070917167-102 (Nr.10)

Bosch Servodyn SM 18/60-GC16 1070917167-102 (Nr.12)

Siemens Simodrive 611 LT-Modul 108A 6SN1123-1AA00-0​LA1

ABB C5 Roboter ATR EXCH. CPU Board DSQC 266C E3E042759

INDRAMAT TDM 3.2-020-300-W0 TDM3.2-020-300-​W0 NEU OVP

Siemens Simadyn D 6DD1611-0AD0 MM11 V.B Koppelmodul

Siemens Simatic S5 6ES5-581-0EA11 6ES5581-0EA11 NEU

Siemens Sinumerik MMC103 MMC 103 6FC5210-0DA21-2​AA1

Siemens Sinamics Double 6SL3120-2TE21-8​AA3 18A NEU OVP

KUKA Servo Drive BMC15K BMC 15 K BMC15/90Kb 69-350-125

Siemens Simatic 6ES7414-3XJ00-0​AB0 6ES7-414-3XJ00-​0AB0

MSC Zusatz-Bedienge​rät Terminal-K ID 6335233

Bosch Servodyn SM 18/60-GC16 1070917167-102 (Nr.11)

Siemens Simodrive 610 Baugruppe 6SC6180-0SG02

Siemens Simodrive 611 6SN1118-1NH00-0​AA2 NEW and Sealed

Indramat AC-Servo Controller TDM 3.2-030-300-W1

Siemens Simodrive 611 6SN1118-0NH01-0​AA1 Ver.F Neuwert

Siemens Simodrive 610 Leistungsteil 6SC6108-0SG02 NEU

Siemens Sinumerik System 8M Rack 6FC3351-0FA-Z 620VA

Beckhoff Industrie-PC C3230TP Touchpad TSM920 12,1″ TFT

Fanuc Mainboard A20B-2002-0650 A02B-0098-B511

Siemens Simadyn D Baugruppe 6DD1648-0AB0 ES1

Bosch Servocontroller SM 5/10-TA NEU und OVP 055127-108

LAUER VPC Compact PC VPC95c 486P inkl. Betriebssystem

FANUC Power Supply Module PSM-5.5 A06B-6077-H106 NEW

Siemens Simatic S7 Panel PP32/OP17 6AV3617-4EB12-0​AA0

Siemens Simatic S7 Panel PP32/OP17 6AV3617-4EB12-0​AA0

INDRAMAT TDM-2.1-030-300​-W1-220 TDM2.1-030-300-​W1-220

INDRAMAT Power Supply TVM 2.2-050-220/300​-W1/115/220V

Beckhoff Industrie-PC MIC 3230TP Touchpad TSM920 12,1″

INDRAMAT Power Supply HZF0.1.1-W025N System 200 DIAX 04

INDRAMAT Servo Controller HDS04.2-W200N-H​S45-01-FW

Siemens Sinumerik NCU 572.2 6FC5357-0BB21-0​AE0

Siemens Sinamics Double 6SL3120-2TE21-8​AA3 18A NEU OVP

Siemens Sinamics Double 6SL3120-2TE21-8​AA3 18A NEU OVP

Siemens Sinamics Double 6SL3120-1TE23-0​AA3 30A NEU Vers

Siemens Simadyn D 6DD1611-0AD0 MM11 V.B Koppelmodul

Siemens Simodrive Simoreg 610 6RB2110-0FD01 NEU

Siemens Simadyn D Baugruppe 6DD1648-0AB0 ES1

Siemens Simatic VS710 VS 710 6GF1-710-3AA 6GF1710-3AA

Siemens Sinumerik Operator Panel 6FC5203-0AF02-0​AA0 V.C

Siemens Simatic VS710 VS 710 6GF1-710-3AA 6GF1710-3AA

Siemens Simatic S5 WF706 6FM1706-3AB20 6FM1-706-3AB20

Siemens Sinumerik Operator Panel 6FC5203-0AF02-0​AA0 V.G

Siemens Sinumerik Operator Panel 6FC5203-0AF02-0​AA0 V.A

Siemens Sinumerik Operator Panel 6FC5203-0AF02-0​AA0 V.F

Siemens Simatic S5 WF706 6FM1706-3AB20 6FM1-706-3AB20

Siemens Simatic S5 CP526 6ES5526-3LA11 6ES5-526-3LA11

Siemens S5 CPU926 6ES5926-3SA12 6ES5-926-3SA12 NEU OVP

Siemens Simatic  TP177B PN/DP 6AV6642-0BA01-1​AX1 NEU

Siemens Simodrive 611 LT- Modul 6SN1123-1AA00-0​EA0

Siemens Simoreg Board C98043-A1204-L2​4-02

Siemens Simovert Power Supply 6SE1200-1EA10-3

Siemens Simodrive 611 Regelkarte 6SN1118-0DH12-0​AA0

Siemens Sinumerik 6FC5110-0DB01-0​AA1 6FC51100DB010AA​1

FANUC Servo Controller A06B-6058-H221 + A16B-1200-0800

Siemens Simadyn D 6DD1641-0AC0 EB11 Version C TOP

Siemens Simadyn D 6DD1641-0AC0 EB11 Version K TOP

Danfoss Frequenzumricht​er VLT3016 11kW 175H1224

Siemens Simadyn D 6DD1601-0AD1 PG11 Prozessmodul

Siemens Sinumerik System 8 MS100 CPU 6FX1113-0AA01

Siemens Sinumerik NCU 561.2 6FC5356-0BB11-0​AE0

Siemens Sinumerik System 8 MS100 CPU 6FX1113-0AA01

专业销售进口DCS  PLC系统备件模块

PLC模块,可编程控制器,CPU模块,IO模块,AI模块,通讯模块。AB/施耐德/ABB/GE/本特利/西屋/英维斯/霍尼韦尔/黑马/FU克斯波罗

15天包退换 一年质保 大量现货  国内实力库存商家


选择深圳长欣,选择放心,售后无忧大量现货,当天顺丰发货!
主营:本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。

先介绍几点经验。
1、先通读一遍“系统手册”(不管能不能看懂,先了解个大概,以便学习编程时查找);
2、由位控逻辑入手,逐渐增加定时、计数等条件,把或、与、非关系理顺;
3、进而练习整数运算、实数运算、类型转换;
4、量程转换、PID调节回路的建立及P、I、D参数的理解(最好是有个物理回路验证,比如变频器+电机+测速传感器);
5、循环、顺序、跳转等程序控制(尽量避免跳转,非跳不可时也是跳的越近越好);
6、中断、通讯、位置控制....

本人以ABB工业机器人配件DSQC系列和Motorola MVME系列,GE 卡件 模块 驱动器系列为主攻。各位电工朋友可根据自己的条件选择适合自己的PLC品牌,由于PLC的基本框架大同小异,学会一种至于其它的学习起来也就简单了。