Disabling Synchronization; Configuring The Network For Switchover - Honeywell Experion PKS User Manual

5 PROFIBUS GATEWAY MODULE (PGM) BLOCK

5.6.2 Disabling Synchronization

Use the following procedure to disable synchronization manually to a redundant PGM pair.
Tip
You can view the active redundant PGM pair in the Monitoring view in the Control Builder.
Prerequisites
The primary and secondary modules are synchronizing, synchronized, or in standby state.
Perform the following steps to disable synchronization
1 In the Monitoring view, double-click the primary PGM icon.
The PGM block configuration form appears.
2 Click the Redundancy tab.
3 Click Disable Synchronization.
4 Click Yes to confirm the action and issue the Disable Synchronization command.
Confirm that the Auto Synchronization State becomes DISABLED.
5 Click OK.

5.6.3 Configuring the network for switchover

During the PGM switchover, there is a brief absence of master. The behavior of the slave devices during the
switchover is up to the slave device configuration. For most of the slave devices, you can configure a time
during which they keep their outputs. However, some devices lose their outputs immediately.
Therefore, the PROFIBUS field network must be configured to tolerate this brief absence of the master during
switchover. If this configuration is not performed, the device outputs can drop.
Attention
While configuring the network for switchover, DPV1 must be disabled from all slave devices.
Perform the following steps to configure the network for switchover
Navigate to the Field Network Configuration tab of the Protocol Block in which you have configured the
1
slave device and the master.
2 Double-click the master.
You can also right-click the master in the Network view and select Configuration.
The configuration window appears. The Device Assignment menu in the Navigation Area is selected by
default.
3 Click the Bus Parameters menu in the Navigation Area.
The Bus Parameters details appear in the right pane. The Bus Parameters details contain the main setup
values of the PROFIBUS network.
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