HEIDENHAIN PROFINET - Manual (Page 100)

Encoder replacement using LLDP
100
9 Encoder replacement using LLDP
The encoder supports Link Layer Discovery Protocol (LLDP).
LLDP is essentially a neighbor discovery protocol used by net-
work devices for advertising of their identity, capabilities and inter-
connections.
In a PROFINET network all IO devices are recognized by their de-
vice name.
Sometimes an IO device needs to be replaced in an automation
system, and this is when LLDP is useful. Using LLDP, the neigh-
bor relations between the individual IO device and the IO control-
ler are analyzed and stored on the IO controller. If an IO device
has been replaced, the IO controller will recognize this and will
redefine the device name.8
Follow the instruction below to exchange an IO device using
LLDP:
Select properties of the PN-IO controllers interface module and
enable Support device replacement without exchangeable medi-
um.
Figure 45 LLDP Properties