描述

3NC352.6

西门子（SIMATIC）PLC以其精湛的德国电路板制造工艺，在我国很过行业被广泛应用，西门子故障处理、PCL电路板维修因而成为很多企业设备维护技术人员必须掌握的本领。

本文主要以西门子S5系列PLC为例分析西门子PLC的主要主要故障表现以及处理办法。

S5系列PLC目前在我国工业市场常见的主要有U型（通用型）、W型（字处理型）、R型（开关型）等三种型号。不同型号的PLC，其故障表现和判断方式也不同。这其中，软件故障都可以利用西门子专用编程器解决问题，西门子PLC都留有通讯PC接口，通过专用伺服编程器即可以解决几乎所有的软件问题。

通过软件PC程序可以判断是否是软件故障，如果是硬件故障，则需要专用的芯片级电路板维修工程师才可对其进行修复工作，PLC一般都是模块话结构构成，较为简单的处理方式就是更换故障板卡。而上海彩亚电路板维修有限公司独有的西门子在线检测平台则可以对所有模块结构进行检测，然后对故障部位进行芯片级维修处理，从而节约客户成本超过70%以上。S5PLC具有自诊断能力，发生模块功能错误时往往能报警并按预先程序作出反应，通过故障指示灯就可判断。当电源正常，各指示灯也指示正常，特别是输入信号正常，但系统功能不正常（输出无或乱）时，本着先易后难、先软后硬的检修原则首先检查用户程序是否出现问题。S5的用户程序储存在PLC的RAM中，是掉电易失性的，当后备电池故障系统电源发生闪失时，程序丢失或紊乱的可能性就很大，当然强烈的电磁干扰也会引起程序出错。有EPROM存储卡及插槽的PLC恢复程序就相当简单，将EPROM卡上的程序拷回PLC后一般都能解决问题；没有EPROM子卡的用户就要利用PG的联机功能将正确的程序发送到PLC上。需要特别说明的是，有时简单的程序覆盖不能解决问题，这时在重新拷贝程序前总清一下RAM中的用户程序是相当必要的。通过将PLC上的“RUN”“ST”开关按RUN—ST—RUN—ST—RUN的顺序拨打一遍或在PG上执行“Object—Blocks—delet—inPLC—allblocks—overall—Reset”功能就完成了RAM中程序的总清。另外，保存在EPROM中的程序并不是万无一失的，过分相信EPROM上的程序有时会给检修带来困惑。所以经常性的检查核对EPROM中的程序，特别是PG中的备份程序就显的尤为重要。输入模块一般由光电耦合电路组成；输出模块根据型号不同有继电输出、晶体管输出、光电输出等。每一点输入输出都有相应的发光二极管指示。有输入信号但该点不亮或确定有输出但输出灯不亮时就应该怀疑I/O模块有故障。输入和输出模块有6到24个点，如果只是因为一个点的损坏就更换整个模块在经济上不合算。通常的做法是找备用点替代，然后在程序中更改相应的地址。但要注意，程序较大是查找具体地址有困难。特别强调的是，无论是更换输入模块还是更换输出模块，都要在PLC断电的情况下进行，S5带电插拔模块是绝对不允许的。

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

Tascam DA-98 Audio Processor Multi Track Recorder

Tascam DR-100 DR100 Portable Digital Audio Recorder
One-day shipping available

Tascam DP-02- Multi-Track Recorder~WARRANTY!~
One-day shipping available

1980’s 112 MKII Recorder-Tascam

TASCAM CD200 CD-200 PRO RACKMOUNT CD PLAYER NEW
One-day shipping available

TASCAM 5 CD PLAYER CD355

TASCAM DR100 Field Recording Bundled DR-100 Digital NEW
Authorized Dealer * Full Warranty* NEW * Fast Shipping
One-day shipping available

Enlarge
Tascam LM8ST Line Mixer 1RU 8-Stereo in LM8ST
One-day shipping available

Tascam CD-355 5-DISC CD Changer – NEW

Tascam 112R 3 Head Cassette Deck
Expedited shipping available

Tascam DP-02- Multi-Track Recorder~WARRANTY!~
One-day shipping available

Tascam CD 355 Professional Rackmount 5 Disc CD Player
5 Disc Capacity! Full Warranty! NEW IN THE BOX!

Enlarge
TASCAM 2600 MKII ANALOG MIXING CONSOLE

Tascam BB800 BB-800 SD Recorder

Tascam CD-RW5000 Rackmount CD Recorder New w. Box

Tascam CD-A700 Rackmount CD/Cassette New w. Box

Tascam DP-004 Portable 4-Track Digital Multi Recorder

TASCAM DR-100_ Digital Recorder ~NEW~Free Power Supply~
One-day shipping available

TASCAM CD200I CD Player w/Built-in IPOD Dock CD-200i
AUTHORIZED DEALER! FULL WARRANTY! FREE SHIPPING!
Expedited shipping available

NEW TASCAM 8-Track Digital Portastudio 788 porta studio

Tascam FW-1084

Tascam DP-02 Digital Recording Interface

TASCAM DR-100 – Handheld 24-Bit SD Recorder

Tascam DR-100 DR100 Portable Digital Audio Recorder NEW
Authorized Dealer * Full Warranty* NEW * Fast Shipping
One-day shipping available

Enlarge
Tascam CD200i CD 200i Rackmount CD Player w/ IPOD Dock

Tascam BB-800 SD RECORDER
Free Shipping on ALL! music123 Orders!

Tascam DR100 Digital Portable Field Recorder DR-100 NEW
Authorized Dealer * Full Warranty* NEW * Fast Shipping
One-day shipping available

Enlarge
TASCAM FW1884 FIREWIRE DAW AUDIO/MIDI INTERFACE

TASCAM CD-A700 CD/Cassette Recorder CDA700 CD A700

Enlarge
Tascam M-2516 16X8 Studio or Live Sound Mixer & Case

TASCAM PS-24 Power Supply (Used With MSR-24 Recorder)
Expedited shipping available

Tascam CDRW 700

TASCAM TASCAM DP-02 DIGITAL PORTASTUDIO
Owners Manual- PowerCord- Built In 40GB HD

*NEW* Tascam DP-008 Digital 8 Track Recorder – DP008

NEW TASCAM DP-008 8 TRACK PORTABLE SUDIO RECORDER [4588
Expedited shipping available

NEW TASCAM US 1641 USB 2.0 Audio/MIDI Computer Intrface
Auth TASCAM dealer w/full USA wrnty FREE USA 48 SHPG!!!

Tascam 122 MKII Professional Studio Cassettes Deck Dolb

Tascam M-164 16 Channel Analog Mixer

Tascam DP-02 Digital Portastudio
One-day shipping available

Tascam 488 Recorder

Tascam M2516 16 channel mixing console!!!!

Tascam CD-A500 Dual Professional Cassette Deck w Remote

TASCAM US-1800 US1800 USB 2.0 AUDIO INTERFACE NEW
One-day shipping available

Tascam US-1800 USB 2.0 Audio Interface.Brand New US1800

Tascam GTR-1 Phrase Trainer

Tascam DP-008 Professional Digital Portable Studio. NEW

TASCAM DP-008 (8-Trk Digital Portastudio)

TASCAM PROFESSIONAL CASSETTE DECK 122 MK II / PARTS

Tascam DP-004 M-Audio Studio Pro Recording Package

TASCAM Teac Corp. DA-30 DA30 MKII DAT Master Recorder

TASCAM DP-008 8 TRACK PORTASTUDIO DIGITAL RECORDER

Tascam DA-98 8 Ch Pro Digital Recorder/Reproducer O

Tascam DA-P1 Portable Recorder DAP1 DAT W Mic Preamps

Tascam IF-AD24 ADAT Optical I/O for MX2424

Tascam DP-008 Portable PORTASTUDIO Multitrack Recorder

TASCAM DP-008 PORTABLE 8TR DIGITAL POCKETSTUDIO NEW

TASCAM DP-004 Recording Package

Tascam DP-02CF 8-Track Digital Portastudio DP-02 CF

New Tascam US-1800_ USB 2.0 Audio Interface, 16 inputs

NEW TASCAM CD-160 mkII rack mt CD player CD160 CD 160

Tascam DA-88 Multi-Track Recorder 0 Hours! NR

DEMO NOS TASCAM 102 MKII RACK MOUNTABLE CASSETTE DECK

TASCAM DR-1 DR1 DR 1 HAND HELD DIGITAL RECORDER NEW

Tascam US1641 USB Audio Computer Interface US 1641

TASCAM DR-100_ Digital Recorder~NEW!+Headphones & MIC!

2000’s DP-01-Tascam

Tascam DR-1 Portable Digital Recorder

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

3NC352.6

描述

相关产品