Kit Configures Redundant PACs

May 4, 2010
The Snap PAC Redundancy Option Kit (Snap-PAC-ROK) can be used to design an Ethernet-based redundant control system. 
Using standard S-series Snap PACs, Snap Ethernet I/O and the new PAC Project Professional 9.0 software suite, users can employ the Snap-PAC-ROK to configure automation systems with dual PACs that essentially synchronize and run in parallel. If one controller fails or is knocked off line, the other controller will assume command and continue to execute the control program and the processes it runs with no interruption or restart necessary. The Snap-PAC-ROK includes: a Redundancy Arbiter, a standalone processor that connects serially to both controllers, and monitors and regulates their status and maintains synchronization of the control program during system start-up; and a Redundant Power Switch, which allows power re-starts to controllers in the event of failure and during firmware upgrades. The PAC Redundancy Manager is a software utility for configuring redundant systems. See related blog post, click here.

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