IF IP address of LD ( linking device (use) missing how it possible to find it.
Described in the manual:
" Each LD 800HSE sends messages to IP address 126.96.36.199 cyclically every 15seconds.
In case the IP configuration of LD 800HSE is not known and a serial connection cable is not available, you could capture its ethernet traffic with a network monitoring tool (e.g. Wireshark) for approx. 30 seconds to find its IP address as the IP source address of these cyclical messages!"
Source: 3BDD011677-600 A