OPC DA Tunnelling

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OPC DA Tunnelling

• OPC DA Tunnelling
• PC to PC without DCOM
• Encryption between systems
• Across Firewall though single port

Presenters Colin Winchester, VP Operations Win
Worrall, Application Engineer
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OPC DA Tunnelling

• Agenda
• OPC Tunnelling
• Overview of the OPC Data Hub
• Live Demonstration
• Additional Application Examples
• Questions Answers

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OPC TunnellingWhat is Tunnelling?

• Moving OPC Data via simple TCP/IP port connection
• Eliminating DCOM and Expanding Data Transport
  Choices

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How Does OPC DA communicate between PCs

• An OPC Client connects to an OPC Server through
  COM
• An OPC Client connecting to an OPC Server on a
  different machine connects through DCOM and must
  be authenticated.

I want to connect to you
Tell me your login name and password!
My user name is fred and password is
Let me check my Access Control List.
PC 2 OPC Server
Yes, you are on my list I will grant you access!
OPC Server
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OPC TunnellingWhy Tunnel- General?

• No DCOM!
• No Remote Procedure Calls (RPC)
• Remove Firewall Issues
• Network Interruptions DCOM timeouts

Computer 2
Computer 1
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OPC DataHubFunctionality Overview
OPC Tunnelling
System Monitoring
http//www.softwaretoolbox.com/opcdatahub
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OPC TunnellingWhy Tunnel with DataHub?

• No DCOM! Or RPC Easy to configure
• Remove Firewall Issues single port
• Network Interruptions more then DCOM
• Low-bandwidth or Reduce Network Traffic
• Improve System Performance Reliability
• Increase Data security (passwords SSL)
• Connecting to Non-Windows Systems
• Connect between any NT or later Windows OS

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Aggregation TunnelingAdditional Application
Examples

• Multiple OPC Servers Clients
• Each Client makes its own connection to each OPC
  Server
• High network utilization, negative impact on
  control network

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Aggregation TunnelingAdditional Application
Examples

• Tunneling from Single OPC Server to Multiple
  Clients
• No DCOM headaches
• Firewall Friendly

OPC Server
OPC Client
OPC DataHub
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Aggregation TunnelingAdditional Application
Examples

• Tunneling Multiple OPC Servers to Single Client
• No DCOM headaches
• Firewall Friendly

OPC Servers
OPC Client
OPC DataHub
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OPC TunnellingWhy Tunnel with DataHub?

• OPC DataHub tunnels DATA
• Any data source OPC DA, DDE, ODBC
• Any data that DataHub can read
• Clients connected to OPC DataHub always get an
  answer
• Multiple clients on same PC, still one remote
  connection to remote OPC sources, managed by OPC
  DataHub.
• Other Tunnellers
• Tunnel commands at the OPC protocol level and can
  only tunnel OPC Data!
• Make connected clients wait on network timeouts
• Multiple clients on same PC talking to remote OPC
  server multiple connections

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Other Approaches

• VPN
• Does not solve
• DCOM, Network stability, bandwidth and crossing
  domains
• OPC XML/DA
• Not secure, more over head, not for high speed,
  limited products, OPC UA
• OPC UA
• Requires all products to support it
• DataHub will add this

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3 Steps to Tunnelling with OPC DataHub

• Step 1 Connect Master to OPC Server

• Step 2 Connect Master to Slave

• Step 3 Connect OPC Client to Slave

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OPC Aggregation Tunnelling

• Live Demonstration

Wins PC
Colins PC
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Aggregation TunnelingAdditional Application
Examples

• Aggregating Tunneling to MES/ERP Systems
• Aggregation Consolidates Plant Floor Data
• Tunneling gets it to the front office
• ODBC, APIs, DDE, Scripting, TCP/IP Available to
  tie in to MES/ERP

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Aggregation TunnelingAdditional Application
Examples

• Aggregating Tunneling OPC, Linux, ODBC and
  Excel!
• Pull data from OPC Server Locally
• Tunneled data to and from remote Linux Server
  or any OS
• ODBC Database connections to Database Server
• All data pulled together in DataHub, charted in
  Excel with dragdrop

DatabaseServer
OPC Server
TCP/IPTunnel
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Aggregation TunnelingAdditional Application
Examples

• Tunneling to Bring HMI/SCADA Data Where You Need
  It
• Aggregate data when needed
• Tunneling to get the data where you need it
• Web Interface Serves the data where how you
  want it
• ODBC, APIs, DDE, Scripting, TCP/IP to do what
  you want!

Factory Floor
DataHub
Standard TCP/IP Single Port Connections
Front Office
DataHub
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What Tools are Needed?

• For all usage scenarios
• No tag count limits
• No limits on of clients, of servers used with
  a single DataHub
• Aggregation on a Single PC 1 DataHub License -
  995
• Aggregation Tunnelling Scenario 2 DataHub
  licenses (one per PC) - 1990
• Demo site will pop-up after this presentation
• http//www.softwaretoolbox.com/opcdatahub/html/fre
  e_demo.shtml

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Contact Information Other Learning Opportunities

• Questions later?
• cwinchester_at_softwaretoolbox.com
• wworrall_at_softwaretoolbox.com
• 888-665-3678 x 1327 or 704-849-2773 x1327
• www.softwaretoolbox.com/opcdatahub
• Other learning opportunities
• www.softwaretoolbox.com/opcdatahub and click on
  Videos/Training
• Visit www.softwaretoolbox.com/webinars