What is the limit of external OPC servers (OPC-S) that I can add in a Freelance 800F project ?
And also, is it possible to connect a redundant external opc server? What about the data traffic limits?
Asked 8 years ago
Answers
2
Theoretically you can have up to 99 OPC servers in one Freelance system.
Redundant OPC servers: You can use two Freelance OPC servers serving the same data in parallel. Let the OPC client look at the first server. If this first server has problems (Detect by watchdog) than swich to the second OPC server. This solution was also used for 800xA Operation on top of Freelance. Power of Freelance OPC server is 10,000 Variables per second.
Redundant OPC servers: You can use two Freelance OPC servers serving the same data in parallel. Let the OPC client look at the first server. If this first server has problems (Detect by watchdog) than swich to the second OPC server. This solution was also used for 800xA Operation on top of Freelance. Power of Freelance OPC server is 10,000 Variables per second.
Answered 8 years ago
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