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Предыдущие результаты
 Уважаемые колеги,
Намедни мне попалась одна интересная статейка (читайте ниже).
Мне кажется, что автор статьи отчасти прав. 8O
[b:c99840f97c]Information Overload Pushing Workers to the Brink[/b:c99840f97c]
[i:c99840f97c]By David R. Butcher[/i:c99840f97c]
People and organizations cannot keep up with the volume of information produced by technological innovation,
as information overload is pushing workers closer to theirbreaking point.
How much information is too much, and what is it doing to our ability to be productive?
Information overload is pushing workers to the brink and cutting into workplace productivity,
according to the LexisNexis-commissioned 2008 Workplace Productivity Survey, which polled 650 employees
in a variety of industries.
According to the survey, a majority of professionals feel they are close to a breaking point,
where they will be unable to effectively process or handle any increase in information flow.
The survey found 68 percent of professionals wished they could spend less time organizing information
and more time using it. Workers admit that not being able to lay their hands on the right information
at the right time impedes their ability to work efficiently, as another 85 percent of respondents said
not finding the right information at the right time was a significant time waster. Meanwhile, 62 percent said
they spent too much time sifting through useless information.
“The information age has brought the American professional workforce to an information overload,” Mike Walsh,
CEO of LexisNexis U.S. Legal Markets, said in a statement.
If we continue to work this way day after day, our brains lose the ability to fully focus our attention
and we develop what he has labeled “attention deficit trait,” according to Dr. Edward Hallowell,
founder of the Hallowell Center, which provides holistic treatment and education about ADHD for both children
and adults, and author of Driven to Distraction.
This condition, which seems to be becoming an epidemic, makes us feel perpetually distracted, impatient,
disorganized and overwhelmed by our work. Our performance levels on important tasks also drop
with “attention deficit trait” because fully focusing our attention is critical to tapping
into our brain’s higher functions.
Research shows that when people are able to fully focus on one task, their brains automatically screen
out distractions and they become more creative and deliver their best performances.
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Вот, посмотрите в Knowledge Base:
[b:235d3d6c37]CIP Messaging Reference[/b:235d3d6c37]
[b:235d3d6c37]DH+ / RIO[/b:235d3d6c37]
DH+ Diagnostics G18529
DHRIO remote rack retry counters G20391
DHRIO DH+ node address A17910
DHRIO DH+ active node table A17854
DHRIO rio status object A17914
Getting and Clearing Diagnostic Counters G96749451
[b:235d3d6c37]ControlNet[/b:235d3d6c37]
Flex Module Info G19246
Node Number G19205
CPU Utilization G18809
LED Status G18643
CNB node address Q51228857
Cnet diagnostic and cable redundancy status A18170
Cip messages to 1747SCNR P19786
Resetting PLC5 diags counters on ControlNet A8361507
resetting ControlNet Diagnostic Counters TN ID 41650
[b:235d3d6c37]EtherNet[/b:235d3d6c37]
ENET IP Information G18770
ENET diagnostic counters A18389
ENBT Diagnostic Counters Q16739464
ENBT Media Counters Q111833722
ENBT Baud and Duplex Q7753033
ENBT Forcing Baud and Duplex A41930091
ENBT CPU utilization G63659254
ENBT IP Information G82553071
ENBT Host Name Q111838865
[b:235d3d6c37]DeviceNet[/b:235d3d6c37]
DNB explicit message example A17630
DNB Explicit message to Panelview example A17520
[b:235d3d6c37]Processor[/b:235d3d6c37]
Firmware Level Q29537172
Program Edits A29430452
Program Download Q29427803
Program Name A28555551
Date and Time G20246
Mode Change (Run / Program) G19586
Changes periodic task execution interval A19765
Clear controller faults (major) G20159
Grab controller free memory G19880
Gets controller run/prog mode status A10549732
cpu backplane counters A20360
Increasing the CPU's unconnected buffers A2846512
Obtaining the controller FW level A21366
Changing the serial port from user to system A20455
Lgx unconnected Buffer changes G20181
OK LED status, Keyswitch position Q63938700
Changing the Serial Port Control Line Programmatically A67244256
Obtaining the keyswitch position A86054621
[b:235d3d6c37]I/O Modules[/b:235d3d6c37]
1794VHSC CIP messages. G20558
Flex with LGX, Cnet and no profiles before 11.xx A20248
Resetting diagnostic latch bits A45740757
Resetting electronic fusing A19814
Obtaining Calibration Data (1756-IR6I/IT6I) A67051751
Obtaining Calibration Data (1756-IF16) G51632465
[b:235d3d6c37]SERCOS Modules[/b:235d3d6c37]
Current Ring Phase Q62831754
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Описание ситуации:
Концевой размыкатель установлен на подвижном защитном ограждении станка, которое предотвращает доступ оператора в опасную зону. В соответствии с требованиями стандарта EN 954 такие компоненты должны иметь уровень безопасности (Safety Integrity Level, SIL) не ниже SIL3.
Проблема:
Не могу разобраться с маркировкой на этом размыкателе. На шильдике приведена такая информация
PIZZATO Italy
Ith 10A
VDE 0660
IEC 947-5-1
IP 65 AC 15
3A 400 V~
A 600 Q 300
IND CONT EQ
usLISTED 58XO
K04 FR1-10402
FX 693
Каталог производителя
http://www.pizzato.com/PizzatoWeb/UserFiles/File/pdf/ZE_CTL18C05-ENG_4_9-14.pdf
Вопрос:
Помогите pls разобраться с приведенной на шильдике и в каталоге производителя информацией и с определением уровня SIL.
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[b:b5ed57f383]About the Security Feature[/b:b5ed57f383]
The Security feature allows you to control the individual users’ access to RSLogix 5000 projects and controllers. Using RSI Security Server software, you control access to your projects and controllers based on:
- the individual user logged into a workstation
- the project the user is attempting to access
- the workstation from which the user is attempting to access the project
Typically, you would use RSI Security Server software to grant or deny permission to perform a particular action on a particular project to a particular person at a particular workstation.
Note: The security feature is primarily intended to prevent accidental unauthorized access to your projects and controllers. It is important to note that while the feature does provide some protection against intentional unauthorized access, it is not intended to provide protection against sophisticated system "hackers." You should exercise your own additional precautions against such unwanted access.
RSI Security Server grants or denies access based on four pieces of information:
- user ID (i.e., the user’s login name)
- workstation ID
- action name (i.e., the activity the user is trying to perform, such as data table modification, or processor mode change)
- resource name (i.e., controller name)
In addition, you can group resources, actions, persons, and workstations via access control lists, which define certain characteristics to determine access levels.
[b:b5ed57f383] RSLogix 5000 and RSI Security Server[/b:b5ed57f383]
When used with RSLogix 5000, RSI Security Server supports 3 global actions and 6 project-related actions. Global actions are not tied to a specific project, and may include:
- securing the controller
- creating a new project (either through the New Controller dialog, or through the Translator Tool utility)
- updating your firmware.
The project-related actions allow you to perform specific tasks on a specific project or group of projects, and may include:
- viewing a project
- going online
[color=darkblue:b5ed57f383]- maintaining a project (e.g., saving, converting, exporting, downloading, setting/forcing tag values, etc.)[/color:b5ed57f383]
- full access (e.g., editing a project), unsecuring the controller, or updating firmware.
Note: Access to these actions is hierarchical. For instance, if you have access to the Go Online action, you also have access to the View Project action; if you have access to the Maintain Project action, you can also access Go Online and View Project; and finally, if you have Full Access, you can access Maintain Project, Go Online, and View Project.
Defining your levels of security begins with deciding the type of access you want to allow to each user, project, or workstation. The following tables can help you to identify your security needs.
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Ну так можете его и использовать. Он же для этого и предназначен.
[quote:76dcd2bb5f]The Schneider OPC Server is designed [b:76dcd2bb5f]to connect PC-based applications (HMI, SCADA, custom applications, etc.) to industrial devices (PLCs, devices, I/O modules, etc.)[/b:76dcd2bb5f] using multiple communication networks.
The OFS package includes:
* The OPC server software implementing a gateway between the PLC protocols and OPC;
* A tool for configuring the OPC server;
* Low level drivers for communication with Modicon Telemecanique PLCs;
* A test OPC client allowing to check the communication between the different elements connected
* A manager giving access to detailed information about the server.
[/quote:76dcd2bb5f]
http://itcofe.web.cern.ch/itcofe/Services/OPC/RecommendedTools/Servers/SchneiderOFS/welcome.html
Вообще, такой софт выпускает множество фирм, например:
http://www.automatedsolutions.com/products/opcmodbus.asp
http://www.kepware.com/Spec_Sheets/Modbus_Ethernet.html
http://www.opcsystems.com/modbus.htm
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[quote:27c17412a7]Четко и понятно - приятно работать :) [/quote:27c17412a7]
Большое спасибо, Слава :)
[quote:27c17412a7]Является ли правильным данный подход, или это можно делать как-то автоматически, или можно системными средствами переименовывать узлы, а не вручную?
Заранее спасибо! :)[/quote:27c17412a7]
Да, в принципе, это правильно. Вообще, это можно сделать средствами VBA в RSView32.
[u:27c17412a7][url=http://domino.automation.rockwell.com/applications%5Ckb%5CRAKB.nsf/0/41C6EA9F10CCF48085256B4C004C911F?OpenDocument]A21171 - How to configure RSView32 to switch between two RSLinx Gateways used in a redundant pair[/url][/u:27c17412a7]
Вот здесь ещё инфо:
[u:27c17412a7][url=http://domino.automation.rockwell.com/applications%5Ckb%5CRAKB.nsf/0/2DD01D53E89359E085256AFB005472B9?OpenDocument]A5054 - Node Level Redundancy - A comparison of the Alias Topic and the NodeSwitch Command[/url][/u:27c17412a7]
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Существует много чего :)
Например, хорошие и надёжные датчики Enfdress + Hauser, рекомендую:
http://www.uk.endress.com/
(Фирма немецкая, но линк англоязычный, чтоб Вам было легче читать :) )
Там в меню Рroducts выберите Products, Services, Solutions, затем Measurement Products и Level.
Тыкайте в линки и читайте инфо, выберите самый подходящий датчик :)
Есть ещё Honeywell, Emerson, Kobold.
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