GE PACSystems RXi User Manual

Chapter 11. PROFINET Redundant Media224 PACSystems* RXi Distributed IO Controller User Manual GFK-2816F11.6 Sequence for Replacing a Media Redundancy ManagerIf it is necessary to replace the PNC that is serving as the Media Redundancy Manager, thereplacement module must be set up as a Media Redundancy Manager before adding it to thering. Alternatively, the ring must be opened before powering up the new PNC and adding it tothe network, as described above.The following procedure can be used to replace a PNC that is operating as MediaRedundancy Manager while allowing the devices on the ring to continue operating.1. Physically disconnect both of the ring’s network connections from the RXi Controller thatis serving as the Media Redundancy Manager.2. Replace the RXi Controller.3. Using the Machine Edition programmer, make sure the hardware configuration is storedto the RXi Controller.4. Using the Machine Edition programmer, view the Fault Tables to make sure the PNC isoperating correctly.5. Physically reconnect both of the ring’s network connections to the replacement RXiController.11.7 Procedure for Disabling Media RedundancyWhen disabling Media Redundancy, the ring must be physically opened before storingconfiguration to the modules. Here is the procedure to successfully disable MediaRedundancy on a network.1. If the ring has no breaks in it, physically disconnect one (and only one) of the ring’snetwork connections from the PNC that’s currently the Media Redundancy Manager.2. Change the configuration for the device that is the Media Redundancy Manager so that itwill no longer be the Media Redundancy Manager. If a PNC is the Media RedundancyManager, use Proficy Machine Edition to disable the Media Redundancy role on thatPNC and then to download the hardware configuration. (If a third-party IO-controller is theMedia Redundancy Manager, the appropriate third-party configuration tool must be usedinstead.)