1797-RPFM

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描述

1797-RPFM

网络防火墙通过设置不同的安全规则来控制设备或系统之间的数据流，在实际应用中主要用于分析与互联网连接的TCP/IP协议簇。防火墙在网络中使用的前提是必须保证网络的连通性，其通过规则设置和协议分析，来限制和过滤那些对管理比较敏感、不安全的信息，防止未经授权的访问。由于工业控制与商用网络的差异，常规的网络安全设置规则用在控制网络上就会存在很多问题。只有正确地设计、配置和维护硬件防火墙的规则，才可以保护工业控制网络系统的安全环境。建议设置的特殊规则包括：
SCADA和工业协议。MODBUS/TCP、EtherNet/IP和DNP3等在工业控制系统中被大量使用，但是这些协议在设计时没有安全加密机制，通常也不会要求任何认证便可以在远程对一个控制装置执行命令。这些协议应该只被允许在控制网络单向传输，不准许在办公网络穿透到控制网络。能够完成这一功能的工业防火墙或者安全路由器，通常被部署在具有以太网接口的I/O设备和控制器上，从而避免因设备联网而造成的病毒攻击或广播风暴，还可以避免各子系统间的病毒攻击和干扰。
分布式组件对象模型(DCOM)。在过程控制中，OLE和ProfiNet(OPC)是使用DCOM的，它运用了微软的远程过程调用服务。该服务有很多的漏洞，很多病毒都会利用这个弱点获取系统权限。此外OPC也利用DCOM动态地打开任意端口，这在防火墙中进行过滤是非常困难的。通用防火墙无法完成对OPC协议的规则限制，如果必须需要该协议，则要求控制网络、网络之间必须物理分开，将控制网络和企业网络横向隔离。

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

Wild Heerbrugg Binoculars Periscop Green Mint

Leica Wild Heerbrugg Theodolite T1800 + GPM5 Surveyor

Wild Heerbrugg T3 Micrometer Theodolite

Wild Heerbrugg M8 Stereo Microscope

Wild Heerbrugg Epimakroskop M450 Microscope 20x/13

Wild P32 terrestrial photogrammetric camera Heerbrugg

Wild Heerbrugg T3 Theodolite

Theodolite Wild T2 Leica Heerbrugg Swiss Surveyor

Wild Heerbrugg T1 New Style Optical Vernier Theodolite

Wild Heerbrugg T1 Optical Vernier Theodolite New Style

Wild Heerbrugg T1 Optical Vernier Theodolite

Falconar 1,4/9,8cm Wild Heerbrugg legendary Aerial Lens

Wild Heerbrugg Optical Vernier Theodolite Model T1

WILD HEERBRUGG LEICA M8 STEREO ZOOM MICROSCOPE 10X/21B

Wild Heerbrugg Sercel D13s Distomat Survey Instrument

Wild Heerbrugg Falconar 1.4/98mm #449

Wild Heerbrugg AVIOLYT BC2 Analytical Spot Map Plotter

Wild Heerbrugg M7A StereoZoom w/Ring Light & Stand

Wild Heerbrugg M7A StereoZoom w/Ring Light & Stand

HV# Wild Heerbrugg makrozoom 1:5

Leica DIOR 3002S Wild Heerbrugg Surveyor Prismless

Wild Heerbrugg T2 Theodolite 1″ Erect Image Late Ver.

Wild Heerbrugg BC4 Astrocamera Astrograph Telescope

Wild Heerbrugg Aerial Camera Aviotar 4/210mm (180×180)

Wild Heerbrugg T2000S Theodolite – MINT

Wild Heerbrugg T1 New Style Optical Vernier Theodolite

Wild Heerbrugg Theodolite Laser System – Excellent

WILD HEERBRUGG T-16 T16 THEODOLITE UPRIGHT IMAGE EX CON

WILD Heerbrugg T16 Theodolite made in Switzerland

MICROSCOPE WILD Heerbrugg Leica M420 stereomicroscop​e

Wild Heerbrugg Makrozoom 1:5 Lens

Wild Heerbrugg M3 Stereo Microscope with Base illuminat

Theodolite Wild T16 Heerbrugg Swiss Surveyor

Wild Heerbrugg Binocular Microscope With 4 Objectives

Wild Heerbrugg Makrozoom 1:5 Inspection Lense

Wild Heerbrugg Makrozoom 1:5 lense

Wild Heerbrugg MakroZoom 1:5 Lense

Wild Heerbrugg M3 Stereo Microscope

WILD HEERBRUGG WILD GLO LASER FOR THEOMAT TRANSIT

Wild Heerbrugg DI 4 w/ GTS 1

Wild Heerbrugg T2000 LEICA Theomat Theodolite Surveyor

WILD Heerbrugg T16-68 DEG Theodolite made Switzerland
Expedited shipping available

Wild Heerbrugg M3 Stereo Microscope

wild heerbrugg T-1 theodolite with precision distomat

Wild Heerbrugg Theodolite T2-128760

Wild Heerbrugg Binocular Microscope Working Light

Wild Heerbrugg Binocular Microscope With 3 Objectives

WILD HEERBRUGG Leica Stereomicroscop​e M3Z Leica M3Z

Wild Heerbrugg Makrozoom 1:5 lense

WILD HEERBRUGG THEODOLITE W/CASE SURVEY SWITZERLAND

Wild Heerbrugg Binocular M12 Microscope

Wild Heerbrugg M11-59324 Microscope & Teaching Head

Vintage Wild Heerbrugg Theodolite Transit Surveyor 1953

Binocular Microscope Wild Heerbrugg 4 Objectives/Ligh​t

* Wild Heerbrugg T16 Theodolite New Style FPOR

WILD HEERBRUGG LEITZ MPS51 MICROSCOPE CAMERA MPS 51

Wild Heerbrugg M11-59631 Microscope

Wild Heerbrugg M11-59320 Microscope

Wild Heerbrugg M11-56324 Microscope

Wild Heerbrugg M11-59608 Microscope

Wild Heerbrugg M11-45109 Microscope

Wild Heerbrugg M11-55062 Microscope

Wild Heerbrugg M11-56303 Microscope

Wild Heerbrugg M11-56316 Microscope

Wild Heerbrugg M11-56301 Microscope

Wild Heerbrugg Microscope Camera With Mel 13 Controller

Wild heerbrugg 17526 microscope Condenser

WILD Heerbrugg Sampling Microscope M501 68199 m20 leitz

Wild Heerbrugg T2 – Theodolite

WILD HEERBRUGG T16 T 16 THEODOLITE CIRCULAR COMPASS

Wild Heerbrugg ARK 2 Gyro Aiming Circle Theodolite

Wild Heerbrugg Microscope Measurement Ocular: 15xSK

Wild Heerbrugg ST4 Mirror Sterescope 3X Oculars

Wild Heerbrugg Switzerland Diskussionstubu​s With Head

Wild Heerbrugg Binocular Microscope #M12-75878

Wild Heerbrugg Binocular Microscope With Stage/Obj

WILD HEERBRUGG MICROSCOPE MTR28 POWER SUPPLY

Wild Heerbrugg Binocular Microscope #M12-75816

Wild Heerbrugg M11-55297 Microscope

Wild Heerbrugg M11-55412 Microscope

Wild Heerbrugg M11-56291 Microscope

Wild Heerbrugg M11-56326 Microscope

Wild Heerbrugg M11-59315 Microscope

Wild Heerbrugg M11-59605 Microscope

Wild Heerbrugg M11-55077 Microscope

Wild Heerbrugg M11-55275 Microscope

Wild Heerbrugg Universal Theodolite Model# T2

LEICA WILD HEERBRUGG

Wild Heerbrugg T16 Theodolite Made in Switzerland No Re

Wild Heerbrugg O/P Target GZM5 Surveyor

Wild Heerbrugg Binocular Microscope M12-75814

WILD HEERBRUGG 1.0X AND WILD MPS12 MICROSCOPE Component

Wild Heerbrugg M1A Stereo Microscope

Leitz Wild Heerbrugg F=300mm Lens No. 382168

WILD HEERBRUGG GLO optical Polytec model PL 650W More

Wild Heerbrugg 13204 Microscope Extension Piece

WILD HEERBRUGG MTR19 MTR 19 ILLUMINATOR POWER SUPPLY

Wild Heerbrugg Switzerland Microscope Camera MPS11 35MM

Lot of Wild Heerbrugg M5 Microscope Parts

Wild Heerbrugg Power Switch – Microscope supply

Wild Heerbrugg MTR-19 Power Source Microscope supply

Wild Heerbrugg Camera Attachment

WILD HEERBRUGG MODEL M20 MICROSCOPE -PARTS/REPAIR

WILD HEERBRUGG T2 T16 THEODOLITE BATTERY BOX CASE

Wild Heerbrugg 20X/13 microscope eyepieces

Wild Heerbrugg Tribrach Adapter Target & Case Survey

Wild Heerbrugg GDR-11 Triple Prism Reflector w/ Case

Wild Heerbrugg Switzerland Power Supply With Handle

NEW WILD HEERBRUGG LEICA TRIBRACH GDF22 OPTICAL PLUMMET

WILD HEERBRUGG 20X MICROSCOPE OPTIC EYEPIECE LENS 20X13

WILD HEERBRUGG OPTIC 20X/13 MICROSCOPE EYEPIECE OCULAR

Wild Heerbrugg T16 Tacheometric Theodlite Switzerland

Wild Heerbrugg M40 Ocular Attachment 15xSK w/ Arm

WILD HEERBRUGG ILLUMINATION LIGHT THEODOLITE T2 T16

Wild Heerbrugg 15X microscope eyepieces

Wild Heerbrugg 20x/13 Microscope Eyepiece #436929

Wild Heerbrugg MTR-28 Lab Microscope Power Supply MTR28

WILD HEERBRUGG ( LEICA) NA24 F.NR.888 172

WILD HEERBRUGG MTR22 BENCH POWER SUPPLY MTR-22

Wild Heerbrugg Theromat T1000 Electronic Theodolite Z

WILD (HEERBRUGG ?) M/41 CALIBRATION DEVICE RANGEFINDER

WILD HEERBRUGG THEODOLITE WILD T1 DIAGRAM OLD POSTER

Wild Heerbrugg MPS15 Semiphotomat Exposure Meter

WILD HEERBRUGG THEODOLITE WILD T3 DIAGRAM OLD POSTER

LEICA WILD HEERBRUGG GPH11 PRISM HOLDER SURVEYING

Wild Heerbrugg Diskussionstubu​s Teaching Head in Case

WILD HEERBRUGG # RZ32 DRAWING SET

Wild Heerbrugg Mtr 16 Regulated Microscope Power Supply

Wild Heerbrugg Mtr 3 Regulated Microscope Power Supply

Wild Heerbrugg M12 Monocular Microscope, Serial # 83298

WILD HEERBRUGG MTR 19 ILLUMINATOR POWER SUPPLY

Wild Heerbrugg Phototube Attachment ??

Wild Heerbrugg MPS15 Semiphotomat Exposure Meter

Wild Heerbrugg M40 Stage

Wild Heerbrugg Leica GST20 Wooden Tripod

Wild Heerbrugg v 1.25x Magnification Piece

WILD HEERBRUGG & LEITZ MICROSCOPE CATALOGS MANUALS

Enlarge
WILD HEERBRUGG T2 T16 THEODOLITE ACCESSORY CASE SURVEY

Enlarge
Wild Heerbrugg Photoautomat MPS 45

HP Agilent E8408A VXI Mainframe + E8491B 89695B E1439A

ELGAR AT8000B PROGRAMMABLE DC POWER SYSTEM + SLAVE UNIT

ELGAR AT8000B PROGRAMMABLE DC POWER SYSTEM + SLAVE UNIT

HP Agilent 54845A Infinium Oscilloscope 1.5GHz 8GSa 4CH

R&S SSCU-55 / ROHDE SCHWARZ TS8950 SIGNAL CONDITIONING

TEKTRONIX / SONY MTG100 MPEG-2 TRANSPORT GENERATOR

HP Agilent 8702B Lightwave Component Analyzer 3 GHz

ANRITSU MP1702A ERROR DETECTOR, 10 GHz, 512 KBIT

K&E 71-1111 OPTICAL MICROMETER + 71-1014 JIG TRANSIT

LECROY LC334A DIGITAL OSCILLOSCOPE 500 MHz 2 GS/s 4ch

YOKOGAWA DL1640L DIGITAL OSCILLOSCOPE 200MHz, 200MS/s

MITUTOYO SERIES 137 139 140 TUBULAR MICROMETER 40-120″

HP Agilent 70905A 70902A 70900A & MF SPECTRUM ANALYZER

RACAL 1261B 12U VXI MAINFRAME + 1260-13 1260-14 1260-45

WAVETEK 2520A SYNTHESIZED SIGNAL GENERATOR .2 – 2200MHz

BRUNSON 75-H MULTI-PURPOSE TRANSIT + OPTICAL SQUARE 190

GENERAL RESISTANCE RDS66-A RESIST-O-STATIC 6 DECADE BOX

BRUEL & KJAER 2690 NEXUS CONDITIONING AMPLIFIER – 2CH

BRUEL & KJAER TYPE 2718 POWER AMPLIFIER

BRUNSON 75-H MULTI-PURPOSE TRANSIT OPTICAL SQUARE + 190

BRUNSON 71 JIG 76 Telescopic 75H Optical Transit Square

TEKTRONIX TLA711 LOGIC ANALYZER + 7M4 7D1 P6434 P6417

HP Agilent 70001A Mainframe + 70842B, 70311A Opt H08

ANRITSU MS8604A Digital Mobile Radio Transmission Test

HP Agilent 8671B Synthesized CW Signal Generator 18 GHz

OHAUS VOYAGER PRO ANALYTICAL LAB SCALE-BALANCE VP214CN

TEKTRONIX TLA622 LOGIC ANALYZER w/ OPTION 6S &1J

Hughes 8010H Traveling Wave Tube Amplifier 4- 8 GHz TWT

TEKTRONIX TDS784A 4CH DIGITIZING OSCILLOSCOPE 1GHZ 4GSs

HP AGILENT 16700A Logic Analysis System *FULLY LOADED*

Hughes 8010H Traveling Wave Tube Amplifier 2- 4 GHz TWT

R&S SMHU 4.32 GHz Synthesized Signal Generator

ETS-Lindgren Holaday HI-4433-STE RF SURVEY METER KIT

MITUTOYO HEIGHTMATIC # 574-210 24″ / 600mm Digital Gage

INTEGRATED CONCEPTS IC-2000 PGA LEAD STRAIGHTENER 2020

LECROY 9430 150 MHz DIGITAL OSCILLOSCOPE 100 Ms/s

AGILENT HP N1025A 1GHz ACTIVE DIFFERENTIAL PROBE 1 GHz

AGILENT / HP E4406A VSA Transmitter Tester 4 GHz + BAF

PHILIPS (FLUKE) PM3585 / 60 LOGIC ANALYZER 64ch 200MHz

ROHDE SMHU 4.32 GHz SYNTHESIZED SIGNAL GENERATOR *R&S*

NOISECOM UFX9737 UFX SERIES 4 CH NOISE GENERATOR

HP 4333A DISTORTION ANALYZER

HP Agilent 4145A Semiconductor Paramter Analyzer DC M02

HP Agilent 75000 Series B E1301A VXI E1345 E1346 66201

HP Agilent 75000 Series B E1301A VXI w/ E1366A & E1326B

MAHR FEDERAL EMD-832-WI DIGITAL ELECTRONIC AMPLIFIER

FLUKE 5101A CALIBRATOR 50 Hz to 50 KHz

KIC SlimKic 2000 Thermal Temperature Profiler Card

KAVO EWL D-88299 MOTOR CONTROL + TYPE 950 SPINDLE PIECE

ANRITSU MG3671B Digital Modulation Signal Generator EXP
Expansion Units MG0301C, MG0303B, and MG0310A included!

HP Agilent 87406B Coaxial Matrix Switch DC – 20 GHz T24

MAURY MICROWAVE 7500 PRECISION CALIBRATION KIT X7500E
WR90 WAVEGUIDE 8.2 – 12.4 GHz (for ANRITSU / AGILENT)

ANRITSU / WILTRON MP1604A 50MHZ – 3GHZ PULSE GENERATOR

ANRITSU MN3650C DIGITAL MODULATOR 800MHz – 2.7 GHz

TEKTRONIX 7854 OSCILLOSCOPE w/ Opt 2D + AMP + TIME BASE

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。

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