In a redundant set of Linking Devices, removing the power supply,
the Ethernet cable or a H1 link 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) and the redundancy link interface cable is intact and
connected. Otherwise the system breaks down or the configuration
information might get lost. Therefore, wait at least one minute
between such checks. See page 46.
In case of removing the redundancy link wiring, redundancy is being
lost but no redundancy switch-over is done. Thus, make sure that
the redundancy link wiring is connected before plugging in the power
terminal block.
If a Linking Device that is part of a set of redundant devices is
powered while the redundancy link is missing, it will behave like an
independent, non-redundant primary device. If in this case the Linking
Device has a valid (possibly unknown) configuration, it might use H1
node addresses that are already in use on the H1 links. This will
disturb or interrupt communication and application processing on
the H1 links. See page 47.
SPECIFIC
CAUTIONS
Before connecting the Linking Device to your LAN network, make
sure that its IP address is not used by another network station. See
page 54.
After a firmware update (flash memory update), all FF configuration
data are lost, but the IP configuration is still valid. See page 66.
SPECIFIC
CAUTIONS
The firmware versions of the primary and secondary LD 810HSE Ex
must be identical. See page 47.
Make sure that in your configuration the maximum number of
republished signals per second per H1 link is not exceeded. See
page 94.
Detecting a loss of an H1 connection between the primary device
and the entire H1 link requires that at least two H1 devices have
been connected to that H1 channel of the Linking Device and have
appeared in the H1 Live List before the loss of the connection occurs.
See page 107.
Only one of the listed faults may be present at a time. Another fault
cannot be tolerated until the redundant set has been repaired and
a fully operational secondary device is available. See page 107.
2PAA114135-610 10
Safety Summary
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