building web-based hmi’s in visual studio .net
DESCRIPTION
Building Web-Based HMI’s in Visual Studio .NET. Introduction to OPC Systems.NET. Renee Sikes Applications Engineer Email : [email protected] Direct Line : +1 (704) 708 6493. Win Worrall Applications/Development Engineer Email : [email protected] - PowerPoint PPT PresentationTRANSCRIPT
Building Web-BasedHMI’s in
Visual Studio .NET
Introduction to
OPC Systems.NET
Win WorrallApplications/Development Engineer
Email: [email protected]
Direct Line: +1 (704) 708 6491
Renee SikesApplications Engineer
Email: [email protected]
Direct Line: +1 (704) 708 6493
Agenda
Talk about Web-Applications, why they matter!
Briefly discuss the merits of a web-based
application
Introduce OPC Systems.NET
Live Demo – Creating HMI Screens for the
Browser
Questions & Answers
We’ll get here quickly!
We’ll get here quickly!
Web-Applications matter!
Accessible via Browser such as Internet Explorer and Firefox. iPhone, Smart Phone, Internet Tablets etc.
Security already built-into the Web-Server. Single application to maintain and deploy. No software or components to deploy. Accessible via LAN & Internet Development is easier than ever!
Why are we here? Why web-applications?
“Web Benefits” that matter!
Firewall-friendly HTTP: No need to open firewall Ports No DCOM headaches
Security built-in: Assign access-rights to users/groups for
the entire site, or per-page Use SSL for secure connections insuring
data-integrity and privacy Abundance of security tools available
“Cluster” Server(s) and Application(s) for High Availability
Web Development Changed
Code-less, no more learning “languages”
AJAX delivers dynamic pages, no reload
Winform/Webform development = same!
Easy debugging with Visual Studio.NET
“Streaming” OPC data is now Easy!
Web-App Capabilities
Display data from OPC Servers Get user-input for writing to OPC Items Trending/Charting live OPC Data Alarm displays and acknowledgements
Web-HMI, does it make sense?(AJAX Polling)
Simple screens with few graphics
Data response can be slow
Restrict access to users/groups
Must be accessible Inside/outside LAN Desktop, Laptop,
Phone etc.
Large quantities of data on-screen.
High-speed data (sub 1-second)
High concurrent user # with above.
Continuous process control / monitoring
We have other solutions that meet these needs
When it makes sense Not a good fit!
OPC Systems .NET Benefits
Suite of Components
“Codeless” development
WebControls.NET, WebTrend.NET, WebAlarm.NET
OPC Systems .NET provides these benefits:
Central “always-on” tag repository = faster performance
Tag data can come from OPC DA and/or Databases
Multi-Threaded for faster, and more Reliable operations
Buffers data, eliminating data-loss for short outages as well
as maximizing the performance of your web-link
Modular, components available separately or as a suite
Affordable, not as expensive as you might think
OPC Self-Certified, for assurance in quality
NO MORE DCOM HEADACHES
PLCPLC DCSDCS OtherOther
How it works…
OPC Systems .NETOPC Systems .NETServiceService
(Tag Repository) (Tag Repository)
OPC Systems .NETOPC Systems .NETServiceService
(Tag Repository) (Tag Repository)
AJAX Polling
Data Source
OPC Server
OPC Server
Tag repository stores Data, and some history
Data can come from OPC Servers
OPC Connection is always ON eliminating connectivity overhead
Browsers see OPC Data when page opens
Async polling retrieves data to be shown in page, no refresh!
PLCPLC DCSDCS OtherOther
How it works…
OPC Systems .NETOPC Systems .NETServiceService
(Tag Repository) (Tag Repository)
OPC Systems .NETOPC Systems .NETServiceService
(Tag Repository) (Tag Repository)
AJAX Polling
Data Source
OPC Server
OPC Server
Browser requests an “update” of the items/tags it needs.
OPC Systems .NET Server responds with values that have changed: If value remains same,
empty data-set returned If 1-value changed, that
value is returned If the value changed
multiple times, all updates sent
Tolerance
Tag Repository individually “caches” data to each client
If a client goes temporarily offline, it will “catch-up” on the next update.
Applies to ALL OPC Systems .NET Clients(data logging, alarms, WinForms, WebForms etc.)
OPC Systems .NET OPC Systems .NET ServiceService
(Tag Repository)(Tag Repository)
Client Client ApplicationApplication
Client Client ApplicationApplication
QueueQueueQueueQueue
Local
Client Client ApplicationApplication
Client Client ApplicationApplication
QueueQueueQueueQueue
Network
Client Client ApplicationApplication
Client Client ApplicationApplication
QueueQueueQueueQueue
Internet
Live Demo
Setup the Tag repository, creating tags coming from
OPC Servers
Create a multi-page Web Site
Display some real-time data
Changing colors based on a value
User-entry form, for writing values to Tags
Charting page
Alarm display and acknowledgement page
Affordable
Tag Counts 1 Feature 3 Features 5 Features All 14 Features
100 Tags $195 $495 $735 $995
250 Tags $295 $745 $1,115 $1,495
500 Tags $395 $995 $1,495 $1,995
1,000 Tags $495 $1,245 $1,865 $2,995
2,500 Tags $795 $1,995 $2,995 $4,995
Code-less development tools are
Runtime-free Fully documented, lots of examples SmartClient Technology ready
No OPC Server Connection or Client Connection Counts No Text File or Database Connection Counts
Contact us for pricing for higher tag counts
Other Features Available
Data Logging (text files and databases) Report generation Alarm logging and notification Windows Forms development tools Recipe management
More Information
www.softwaretoolbox.com/opcsystems
Questions: Win Worrall:
Email: [email protected]
Tel: +1 (704) 708-6491
Renee Sikes:
Email: [email protected]
Tel: +1 (704) 708-6493
Technical Support:
Tel: +1 (704) 849-2773
Web: http://support.softwaretoolbox.com
… get through to an expert!