OPC server redirection manager

Details OPC server redirection manager OPC server redirection manager

2007-04-12

2008-11-11

Cardone, Jason (Department: 2145)

Electrical computers and digital processing systems: multicomput

Computer network managing

Computer network monitoring

C709S203000, C719S318000

Reexamination Certificate

active

07451215

ABSTRACT:
An OPC redirection manager maintains the information necessary for taking appropriate action when the target OPC server fails and for ensuring that no bad status is returned to the client. Any existing OPC client needing seamless failover between target OPC data access and/or alarm and event servers will connect to a uniquely configured instance of the redirection manager instead of connecting to the primary server. The client application continues to perform OPC related tasks as usual. Because each client connection is unique, the redirection manager itself is not a single point of failure. Each configured redirection manager instance monitors the health of the target server mode and the target server itself by subscribing to failure events.

REFERENCES:
patent: 2002/0156872 (2002-10-01), Brown
patent: 2003/0060900 (2003-03-01), Lo et al.
patent: 2004/0024891 (2004-02-01), Agrusa et al.
OPC-Real-Time Drivers at Matrikon.com; “Matrikon: We Make Connection”, www.matrikon.com/drivers/,p. 1-10.
OPC Demo Tutorial; “Matrikon: Solution for Industrial Agility”, p. 1-30.

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