Cha pter 3 - Ins ta l l a ti on
© Softing Industrial Automation GmbH
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Primary device vs. secondary device
When using a redundant set of two FG-200 s, the device which is powered first will operate
as primary device. If both devices are powered at the same time, the one with the lower IP
address will operate as primary device.
Removing the power supply
Before you remove the power supply from the primary device make sure the secondary
device is operational. In a redundant set of FG-200s, removing the power supply, the
Ethernet cable or the redundancy link interface cable from the primary device causes a
redundancy change-over. Before doing so, make sure that the secondary device is
operational (and not still booting due to a prior change-over). Otherwise the system breaks
down or the configuration information might get lost. Therefore wait at least one minute
between such checks.
