OPC DA Tunnelling OPC PC to PC without DCOM Across Firewall though single port Across Internet with Encryption

Transcription

1 OPC DA Tunnelling OPC DA Tunnelling OPC PC to PC without DCOM Across Firewall though single port Across Internet with Encryption Presenters: John Weber, President Win Worrall, Application Engineer

2 OPC Tunnelling and Data Aggregation with OPC DataHub Agenda OPC Tunnelling Overview of the OPC Data Hub Live Demonstration Additional Application Examples Questions & Answers Use the Web-Ex Q&A at any time

3 OPC Tunnelling What is Tunnelling? Moving OPC Data via simple TCP/IP port connection Eliminating DCOM and Expanding Data Transport Choices Computer #1 Computer #2

4 How Does OPC DA communicate between PC s 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. PC 1 OPC Client OPC Client COM run-time Security Provider I I want want Tell me to to your connect to to you My login name youand My Let user user me name check name my is password! is Access fred fred and Control and password Yes, List. you are is on my ***** ***** list I will grant you access! COM run-time PC 1 OPC Server Security Provider OPC Server

5 OPC Tunnelling Why Tunnel- General? No DCOM! No Remote Procedure Calls (RPC) Remove Firewall Issues Network Interruptions DCOM timeouts

6 OPC DataHub Functionality Overview OPC Tunnelling System Monitoring

7 OPC Tunnelling Why Tunnel with DataHub? No DCOM! No Remote Procedure Calls (RPC) Remove Firewall Issues Network Interruptions more then DCOM Low-bandwidth networks Improve System Performance & Reliability Reduce Network Traffic Increase Data security (passwords & SSL) Connecting to Non-Windows Systems

8 OPC Tunnelling Why Tunnel with DataHub? OPC DataHub tunnels DATA Any data source OPC, 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

9 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

10 OPC Data Aggregation Bringing together data from multiple sources Data sources don t all have to be OPC servers! Multiple & Varied OPC DataHub 1 to N OPC Clients (i.e. HMI/SCADA) Aggregating to a Single Computer Data Sources

11 OPC Data Aggregation Why Aggregate? Insure common, consistent update rate Limit # of OPC connections Bring disparate data sources together (OPC, DDE, ODBC) Overcome OPC server limitations Overcome OPC client limitations Reduce network traffic Improve system performance Save money on OPC client & server licensing with some applications!

12 OPC Aggregation &Tunnelling Live Demonstration Aggregation: 2 OPC Servers 1 Remote Linux server Tunnelling 1 connection with standard tunnel 1 connection with SSL secure tunnel

13 Multiple OPC Servers & Clients Aggregation & Tunneling Additional Application Examples Each Client makes it s own connection to each OPC Server High network utilization, negative impact on control network Without Aggregation Efficient a maze Data of connections Flow and redundant data flow! OPC Servers & OPC OPC DataHub Servers & OPC DataHub OPC OPC Clients Clients

14 Aggregation & Tunneling Additional Application Examples Tunneling Multiple OPC Servers to Single Client No DCOM headaches Firewall Friendly OPC Servers OPC DataHub OPC Client

15 Aggregation & Tunneling Additional Application Examples Tunneling from Single OPC Server to Multiple Clients No DCOM headaches Firewall Friendly OPC Client OPC DataHub OPC Server

16 Aggregation & Tunneling Additional Application Examples Aggregating & Tunneling to MES/ERP Systems Aggregation Consolidates Plant Floor Data Tunneling gets it to the front office ODBC, API s, DDE, Scripting, TCP/IP Available to tie in to MES/ERP

17 Aggregation & Tunneling Additional Application Examples Aggregating & Tunneling OPC, Linux, ODBC and Excel! Pull data from OPC Server Locally Tunneled data to and from remote Linux Server ODBC Database connections to Database Server All data pulled together in DataHub, charted in Excel with drag+drop Database Server OPC Server TCP/IP Tunnel

18 Aggregation & Tunneling Additional 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, API s, DDE, Scripting, TCP/IP to do what you want! DataHub Factory Floor DataHub Front Office Standard TCP/IP Single Port Connections DataHub DataHub TOP Server InTouch to OPC Driver GE RSView Proficy InTouch ifix HMI

19 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

20 Contact Information & Other Learning Opportunities Questions later? x 1327 or x Other learning opportunities and click on Videos/Training Visit